7Baggers

CME Group Inc
(NASDAQ:CME) 

CME stock logo

CME Group Inc., together with its subsidiaries, operates contract markets for the trading of futures and options on futures contracts worldwide. It offers futures and options products based on interest rates, equity indexes, foreign exchange, agricultural commodities, energy, and metals, as well as ...

Founded: 2007
Full Time Employees: 4,360
CEO: Terrence A. Duffy  
Sector: Financial Services
Industry: Financial Data & Stock Exchanges

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Quarterly
Annual
    Unit: USD2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 
                                                                          
      revenues
                                                                          
      clearing and transaction fees
    1,327,900,000 1,227,900,000 1,388,000,000 1,337,300,000 1,232,300,000 1,297,100,000 1,249,900,000 1,208,900,000 1,184,500,000 1,085,500,000 1,118,300,000 1,200,200,000 981,400,000 998,600,000 1,024,600,000 1,138,100,000 949,300,000 878,900,000 929,900,000 1,007,000,000 843,000,000 835,400,000 940,200,000 1,278,800,000 901,000,000 1,040,700,000 1,051,800,000 952,600,000 1,034,800,000 752,500,000 906,100,000 973,600,000 758,400,000 756,200,000 792,000,000 792,000,000 768,500,000 704,200,000 767,600,000 796,100,000 678,900,000 715,000,000 681,800,000 708,200,000 475,825,000 641,800,000 609,300,000 652,200,000 470,900,000 597,900,000 692,500,000 593,200,000 456,725,000 562,200,000 643,600,000 621,100,000 527,950,000 732,700,000 687,800,000 691,300,000 625,400,000 598,700,000 684,200,000 578,000,000 556,700,000 540,600,000 536,800,000 527,800,000 573,086,000 558,721,000 
      market data and information services
    208,000,000 202,500,000 198,100,000 194,500,000 181,600,000 178,200,000 175,000,000 175,400,000 167,200,000 167,600,000 163,100,000 165,800,000 153,200,000 154,300,000 151,700,000 151,700,000 142,100,000 145,400,000 145,200,000 144,200,000 139,800,000 139,400,000 134,700,000 131,500,000 130,300,000 129,800,000 128,300,000 130,100,000 130,200,000 110,700,000 113,800,000 94,900,000 102,000,000 96,900,000 96,100,000 96,800,000 100,100,000 101,100,000 102,900,000 102,400,000 99,100,000 99,500,000 102,800,000 98,000,000 66,675,000 87,700,000 89,600,000 89,400,000 59,725,000 78,600,000 79,400,000 80,900,000 76,950,000 82,800,000 110,800,000 114,200,000 80,475,000 107,000,000 107,900,000 107,000,000 104,100,000 101,400,000 102,000,000 87,600,000       
      other
    112,800,000 107,200,000 105,900,000 110,500,000 111,400,000 109,100,000 107,600,000 103,600,000 87,600,000 84,700,000 78,800,000 75,600,000 73,200,000 74,900,000 60,900,000 56,800,000 55,900,000 85,600,000 104,100,000 102,100,000 115,700,000 105,900,000 107,400,000 111,800,000 107,100,000 106,800,000 92,600,000 96,900,000 150,000,000 14,800,000 13,500,000 14,500,000 13,700,000 12,000,000 11,600,000 16,200,000 20,600,000 12,600,000 13,600,000 14,100,000 14,100,000 14,200,000 13,900,000 15,200,000 9,950,000 12,100,000 12,300,000 15,400,000 16,100,000 17,800,000 23,600,000 23,000,000 13,375,000 15,000,000 18,900,000 19,600,000 18,900,000 22,500,000 31,300,000 21,800,000 21,700,000 22,000,000 16,500,000 16,700,000 17,400,000 16,900,000 17,300,000 22,100,000 19,878,000 17,783,000 
      total revenues
    1,648,700,000 1,537,600,000 1,692,000,000 1,642,300,000 1,525,300,000 1,584,400,000 1,532,500,000 1,487,900,000 1,439,300,000 1,337,800,000 1,360,200,000 1,441,600,000 1,207,800,000 1,227,800,000 1,237,200,000 1,346,600,000 1,147,300,000 1,109,900,000 1,179,200,000 1,253,300,000 1,098,500,000 1,080,700,000 1,182,300,000 1,522,100,000 1,138,400,000 1,277,300,000 1,272,700,000 1,179,600,000 1,236,600,000 904,200,000 1,059,600,000 1,109,000,000 900,000,000 890,800,000 924,600,000 929,300,000 912,900,000 841,700,000 906,400,000 934,200,000 813,800,000 850,300,000 820,000,000 842,700,000 732,300,000 762,400,000 731,600,000 777,400,000 363,500,000 714,600,000 816,100,000 718,600,000 307,300,000 683,200,000 795,900,000 774,600,000 -788,000,000 874,200,000 838,300,000 831,600,000 763,200,000 733,400,000 813,900,000 693,200,000 667,500,000 650,400,000 647,800,000 647,100,000 691,769,000 680,952,000 
      yoy
    8.09% -2.95% 10.41% 10.38% 5.98% 18.43% 12.67% 3.21% 19.17% 8.96% 9.94% 7.05% 5.27% 10.62% 4.92% 7.44% 4.44% 2.70% -0.26% -17.66% -3.50% -15.39% -7.10% 29.04% -7.94% 41.26% 20.11% 6.37% 37.40% 1.50% 14.60% 19.34% -1.41% 5.83% 2.01% -0.52% 12.18% -1.01% 10.54% 10.86% 11.13% 11.53% 12.08% 8.40% 101.46% 6.69% -10.35% 8.18% 18.29% 4.60% 2.54% -7.23% -139.00% -21.85% -5.06% -6.85% -203.25% 19.20% 3.00% 19.97% 14.34% 12.76% 25.64% 7.12% -3.51% -4.49%     
      qoq
    7.23% -9.13% 3.03% 7.67% -3.73% 3.39% 3.00% 3.38% 7.59% -1.65% -5.65% 19.36% -1.63% -0.76% -8.12% 17.37% 3.37% -5.88% -5.91% 14.09% 1.65% -8.59% -22.32% 33.71% -10.87% 0.36% 7.89% -4.61% 36.76% -14.67% -4.45% 23.22% 1.03% -3.66% -0.51% 1.80% 8.46% -7.14% -2.98% 14.79% -4.29% 3.70% -2.69% 15.08% -3.95% 4.21% -5.89% 113.87% -49.13% -12.44% 13.57% 133.84% -55.02% -14.16% 2.75% -198.30% -190.14% 4.28% 0.81% 8.96% 4.06% -9.89% 17.41% 3.85% 2.63% 0.40% 0.11% -6.46% 1.59%  
      expenses
                                                                          
      compensation and benefits
    241,100,000 237,600,000 221,600,000 206,700,000 220,800,000 218,800,000 204,700,000 206,000,000 212,900,000 205,500,000 205,700,000 204,500,000 193,000,000 189,600,000 185,300,000 185,200,000 201,700,000 198,600,000 211,700,000 225,000,000 215,600,000 216,400,000 217,000,000 207,500,000 217,600,000 223,500,000 227,300,000 230,300,000 223,800,000 144,900,000 150,800,000 152,700,000 139,500,000 141,400,000 139,300,000 142,300,000 146,800,000 130,600,000 131,700,000 131,900,000 134,500,000 136,400,000 141,500,000 141,300,000 101,825,000 132,100,000 139,700,000 135,500,000 98,075,000 134,000,000 128,900,000 129,400,000 95,925,000 117,500,000 131,100,000 135,100,000 89,925,000 119,900,000 117,500,000 122,300,000 119,800,000 110,400,000 103,100,000 98,800,000 89,000,000 87,300,000 88,000,000 86,700,000 86,096,000 84,581,000 
      technology
    75,200,000 71,400,000 70,900,000 65,700,000 65,700,000 66,600,000 64,100,000 59,400,000 58,500,000 55,600,000 53,300,000 51,300,000 50,000,000 46,800,000 45,900,000 45,900,000 45,800,000 49,300,000 49,300,000 48,200,000 53,600,000 48,100,000 49,100,000 47,700,000 53,100,000 52,700,000 48,600,000 47,100,000                                           
      professional fees and outside services
    47,900,000 36,700,000 37,400,000 28,500,000 33,900,000 31,000,000 34,700,000 33,100,000 36,100,000 32,200,000 37,800,000 38,300,000 38,500,000 35,100,000 32,000,000 31,800,000 32,300,000 45,200,000 36,800,000 37,400,000 50,000,000 48,400,000 51,200,000 41,700,000 49,800,000 43,200,000 41,700,000 39,400,000 60,300,000 31,300,000 31,900,000 42,600,000 34,600,000 25,800,000 28,600,000 28,600,000 40,200,000 33,500,000 39,000,000 31,700,000 32,200,000 33,800,000 27,700,000 29,100,000 24,825,000 32,200,000 37,500,000 29,600,000 21,350,000 35,600,000 27,900,000 21,900,000 24,800,000 26,700,000 40,300,000 32,200,000 22,600,000 29,000,000 30,700,000 30,700,000 35,000,000 26,100,000 25,200,000 31,200,000 23,200,000 17,900,000 22,400,000 22,300,000 24,161,000 16,958,000 
      amortization of purchased intangibles
    55,900,000 56,200,000 56,100,000 55,200,000 55,300,000 55,700,000 55,500,000 55,200,000 55,600,000 57,200,000 57,000,000 56,800,000 56,700,000 55,500,000 57,100,000 58,400,000 58,600,000 59,000,000 59,400,000 60,600,000 79,000,000 78,300,000 76,600,000 77,300,000 78,100,000 79,800,000 76,100,000 80,700,000 59,000,000 23,700,000 23,600,000 23,700,000 23,700,000 23,800,000 24,000,000 24,000,000 24,100,000 24,000,000 24,000,000 24,000,000 24,600,000 24,900,000 25,000,000 24,900,000 18,925,000 25,300,000 25,200,000 25,200,000 19,350,000 25,600,000 25,900,000 25,900,000 22,575,000 26,200,000 31,300,000 32,800,000 24,800,000 33,000,000 33,000,000 33,200,000 32,600,000 32,400,000 32,300,000 30,800,000 30,600,000 30,700,000 30,500,000 33,300,000 35,524,000 29,047,000 
      depreciation and amortization
    26,500,000 26,400,000 27,300,000 27,300,000 28,100,000 28,200,000 28,700,000 30,100,000 30,700,000 31,100,000 32,300,000 31,900,000 33,900,000 34,500,000 33,000,000 33,500,000 35,900,000 37,200,000 37,100,000 37,600,000 41,500,000 39,700,000 36,700,000 35,300,000 38,000,000 41,400,000 46,300,000 32,900,000 32,900,000 30,200,000 27,500,000 28,100,000 27,900,000 26,900,000 28,800,000 29,400,000 33,700,000 31,200,000 30,400,000 33,900,000 31,700,000 32,400,000 33,300,000 31,800,000 25,275,000 32,700,000 34,300,000 34,100,000 25,200,000 35,000,000 33,200,000 32,600,000 25,750,000 34,500,000 33,600,000 34,900,000 23,775,000 32,400,000 31,700,000 31,000,000 31,800,000 33,100,000 32,800,000 32,200,000 32,900,000 32,300,000 30,100,000 31,000,000 34,472,000 34,087,000 
      licensing and other fee agreements
    96,600,000 81,600,000 96,200,000 96,600,000 84,000,000 97,600,000 85,900,000 87,900,000 80,400,000 79,500,000 78,200,000 84,700,000 72,400,000 83,600,000 83,100,000 80,900,000 60,400,000 57,600,000 54,200,000 64,700,000 57,900,000 57,700,000 55,400,000 73,900,000 41,300,000 45,600,000 44,800,000 40,500,000 47,800,000 33,400,000 39,900,000 49,500,000 38,100,000 41,500,000 32,900,000 33,800,000 32,500,000 31,500,000 32,800,000 39,000,000 31,300,000 33,100,000 28,800,000 30,600,000 20,050,000 25,500,000 25,700,000 29,000,000 18,450,000 25,700,000 26,900,000 21,200,000 15,800,000 19,200,000 23,300,000 20,700,000 16,175,000 22,600,000 18,600,000 23,500,000 19,800,000 20,500,000 21,200,000 21,100,000 21,700,000 21,200,000 21,700,000 24,600,000 25,467,000 19,253,000 
      total expenses
    629,100,000 565,000,000 562,700,000 534,300,000 578,200,000 560,200,000 531,900,000 528,300,000 576,100,000 517,600,000 521,600,000 527,900,000 539,500,000 489,000,000 487,500,000 487,500,000 515,600,000 496,200,000 504,500,000 528,200,000 583,500,000 555,700,000 544,800,000 562,200,000 565,400,000 592,100,000 574,100,000 548,600,000 586,700,000 354,300,000 392,700,000 368,100,000 362,700,000 322,900,000 319,000,000 328,100,000 372,700,000 316,400,000 343,100,000 360,300,000 343,900,000 333,900,000 324,900,000 335,400,000 243,625,000 332,000,000 319,600,000 322,900,000 233,875,000 314,100,000 308,300,000 313,100,000 234,325,000 287,200,000 326,700,000 323,400,000 228,350,000 302,100,000 303,800,000 307,500,000 304,800,000 290,500,000 298,800,000 278,500,000 265,000,000 249,000,000 249,000,000 260,700,000 273,914,000 260,181,000 
      operating income
    1,019,600,000 972,600,000 1,129,300,000 1,108,000,000 947,100,000 1,024,200,000 1,000,600,000 959,600,000 863,200,000 820,200,000 838,600,000 913,700,000 668,300,000 738,800,000 749,700,000 859,100,000 631,700,000 613,700,000 674,700,000 725,100,000 515,000,000 525,000,000 637,500,000 959,900,000 573,000,000 685,200,000 698,600,000 631,000,000 649,900,000 549,900,000 666,900,000 740,900,000 537,300,000 567,900,000 605,600,000 601,200,000 540,200,000 525,300,000 563,300,000 573,900,000 469,900,000 516,400,000 495,100,000 507,300,000 534,200,000 430,400,000 412,000,000 454,500,000 275,300,000 400,500,000 507,800,000 405,500,000 265,800,000 396,000,000 469,200,000 451,200,000 -578,800,000 572,100,000 534,500,000 524,100,000 458,400,000 442,900,000 515,100,000 414,700,000 402,500,000 401,400,000 398,800,000 386,400,000 417,855,000 420,771,000 
      yoy
    7.65% -5.04% 12.86% 15.46% 9.72% 24.87% 19.32% 5.02% 29.16% 11.02% 11.86% 6.36% 5.79% 20.38% 11.12% 18.48% 22.66% 16.90% 5.84% -24.46% -10.12% -23.38% -8.75% 52.12% -11.83% 24.60% 4.75% -14.83% 20.96% -3.17% 10.12% 23.24% -0.54% 8.11% 7.51% 4.76% 14.96% 1.72% 13.77% 13.13% -12.04% 19.98% 20.17% 11.62% 94.04% 7.47% -18.87% 12.08% 3.57% 1.14% 8.23% -10.13% -145.92% -30.78% -12.22% -13.91% -226.27% 29.17% 3.77% 26.38% 13.89% 10.34% 29.16% 7.32% -3.67% -4.60%     
      qoq
    4.83% -13.88% 1.92% 16.99% -7.53% 2.36% 4.27% 11.17% 5.24% -2.19% -8.22% 36.72% -9.54% -1.45% -12.73% 36.00% 2.93% -9.04% -6.95% 40.80% -1.90% -17.65% -33.59% 67.52% -16.37% -1.92% 10.71% -2.91% 18.19% -17.54% -9.99% 37.89% -5.39% -6.23% 0.73% 11.29% 2.84% -6.75% -1.85% 22.13% -9.00% 4.30% -2.40% -5.04% 24.12% 4.47% -9.35% 65.09% -31.26% -21.13% 25.23% 52.56% -32.88% -15.60% 3.99% -177.95% -201.17% 7.03% 1.98% 14.33% 3.50% -14.02% 24.21% 3.03% 0.27% 0.65% 3.21% -7.53% -0.69%  
      operating margin %
    61.84% 63.25% 66.74% 67.47% 62.09% 64.64% 65.29% 64.49% 59.97% 61.31% 61.65% 63.38% 55.33% 60.17% 60.60% 63.80% 55.06% 55.29% 57.22% 57.86% 46.88% 48.58% 53.92% 63.06% 50.33% 53.64% 54.89% 53.49% 52.56% 60.82% 62.94% 66.81% 59.70% 63.75% 65.50% 64.69% 59.17% 62.41% 62.15% 61.43% 57.74% 60.73% 60.38% 60.20% 72.95% 56.45% 56.31% 58.46% 75.74% 56.05% 62.22% 56.43% 86.50% 57.96% 58.95% 58.25% 73.45% 65.44% 63.76% 63.02% 60.06% 60.39% 63.29% 59.82% 60.30% 61.72% 61.56% 59.71% 60.40% 61.79% 
      non-operating income
                                                                          
      investment income
    1,776,700,000 1,548,700,000 1,518,400,000 892,700,000 936,500,000 1,026,800,000 1,044,500,000 1,071,300,000 1,076,900,000 1,272,500,000 1,568,200,000 1,357,700,000 1,152,200,000 686,200,000 286,900,000 73,100,000 67,800,000 145,800,000 62,400,000 30,900,000 31,100,000 23,600,000 32,100,000 95,900,000 147,600,000 172,300,000 139,300,000 178,700,000 185,300,000 161,500,000 241,900,000 156,400,000 140,500,000 139,900,000 112,400,000 138,900,000 70,500,000 36,500,000 17,200,000 17,600,000 3,400,000 2,500,000 18,500,000 5,700,000 6,425,000 7,400,000 15,100,000 3,200,000 8,725,000 12,600,000 18,700,000 3,600,000 7,825,000 13,100,000 6,100,000 12,100,000 6,775,000 3,700,000 4,600,000 18,800,000 14,200,000 12,600,000 4,400,000 11,100,000 6,100,000 10,500,000 10,100,000 1,800,000 4,105,000 17,986,000 
      interest and other borrowing costs
    -43,700,000 -44,000,000 -44,000,000 -41,700,000 -40,700,000 -40,200,000 -40,100,000 -39,900,000 -39,700,000 -39,600,000 -40,200,000 -39,900,000 -39,900,000 -40,400,000 -39,900,000 -42,500,000 -41,900,000 -41,800,000 -41,700,000 -41,500,000 -41,700,000 -41,700,000 -41,900,000 -40,900,000 -42,000,000 -42,800,000 -45,100,000 -48,100,000 -49,500,000 -45,000,000 -33,100,000 -30,100,000 -29,100,000 -29,100,000 -29,000,000 -29,800,000 -31,600,000 -31,100,000 -31,000,000 -29,800,000 -28,900,000 -28,300,000 -28,600,000 -31,600,000 -22,675,000 -28,700,000 -28,300,000 -33,700,000 -28,200,000 -34,600,000 -39,200,000 -39,000,000 -22,050,000 -30,200,000 -28,900,000 -29,100,000 -21,950,000 -29,000,000 -28,700,000 -30,100,000 -35,100,000 -35,900,000 -37,900,000 -31,400,000 -30,700,000 -32,100,000 -32,600,000 -38,500,000 -34,911,000 -17,884,000 
      equity in net earnings of unconsolidated subsidiaries
    88,200,000 96,300,000 99,000,000 88,200,000 91,200,000 86,100,000 86,400,000 87,200,000 66,800,000 76,800,000 75,100,000 78,200,000 64,000,000 76,500,000 87,300,000 73,300,000 67,500,000 66,400,000 55,700,000 56,200,000 46,600,000 44,000,000 48,800,000 51,200,000 44,500,000 48,000,000 43,800,000 40,500,000 39,200,000 37,100,000 36,400,000 40,100,000 32,700,000 33,900,000 31,800,000 30,800,000 27,800,000 28,600,000 27,000,000 26,800,000 24,900,000 26,600,000 26,000,000 22,500,000                           
      other non-operating income
    -1,262,400,000 -1,396,600,000 -1,372,400,000 -802,400,000 -837,500,000 -920,000,000 -936,900,000 -964,800,000 -961,200,000 -1,155,600,000 -1,425,300,000 -1,152,800,000 -1,017,300,000 -581,100,000 -217,300,000 -46,700,000 74,200,000 311,800,000 -25,000,000 -18,400,000 -16,000,000 -14,400,000 -15,200,000 -76,800,000 -99,000,000 -139,500,000 -134,500,000 -161,900,000 -154,400,000 -141,700,000 -155,300,000 -118,600,000 -106,700,000 -105,300,000 -83,500,000 -34,100,000 -12,700,000 -10,500,000 -10,400,000 -10,000,000 -800,000 -800,000 -62,900,000 21,700,000 450,000  1,800,000      16,400,000 400,000 65,200,000                
      total non-operating income
    558,800,000 204,400,000 201,000,000 136,800,000 149,500,000 152,700,000 153,900,000 153,800,000 142,800,000 154,100,000 177,800,000 243,200,000 159,000,000 141,200,000 117,000,000 57,200,000 167,600,000 482,200,000 51,400,000 27,200,000 20,000,000 11,500,000 23,800,000 29,400,000 51,100,000 38,000,000 3,500,000 9,200,000 20,600,000 11,900,000 89,900,000 47,800,000 37,400,000 39,400,000 31,700,000 105,800,000                             -26,350,000 -45,600,000 -23,900,000 -35,900,000   
      income before income taxes
    1,578,400,000 1,177,000,000 1,330,300,000 1,244,800,000 1,096,600,000 1,176,900,000 1,154,500,000 1,113,400,000 1,006,000,000 974,300,000 1,016,400,000 1,156,900,000 827,300,000 880,000,000 866,700,000 916,300,000 799,300,000 1,095,900,000 726,100,000 752,300,000 535,000,000 536,500,000 661,300,000 989,300,000 624,100,000 723,200,000 702,100,000 640,200,000 670,500,000 561,800,000 756,800,000 788,700,000 574,700,000 607,300,000 637,300,000 707,000,000 594,200,000 548,800,000 566,100,000 578,500,000 468,500,000 516,400,000 448,100,000 523,800,000 424,300,000 429,100,000 422,100,000 446,400,000 143,500,000 398,900,000 507,500,000 387,600,000 -91,900,000 395,800,000 510,700,000 433,400,000 -471,000,000 545,900,000 509,300,000 511,600,000 427,200,000 415,700,000 480,100,000 398,900,000 356,300,000 355,800,000 374,900,000 350,500,000 111,163,000 396,000,000 
      income tax provision
    395,500,000 269,000,000 305,200,000 288,600,000 222,000,000 264,100,000 271,300,000 258,200,000 191,400,000 224,100,000 238,800,000 273,100,000 189,400,000 200,400,000 204,200,000 205,300,000 174,100,000 169,600,000 215,500,000 177,500,000 110,200,000 125,000,000 158,000,000 222,500,000 155,100,000 86,900,000 187,500,000 144,300,000 283,500,000 150,000,000 190,700,000 189,900,000 -2,364,500,000 298,700,000 221,500,000 307,200,000 220,800,000 76,000,000 246,000,000 210,700,000 176,800,000 156,500,000 183,100,000 193,400,000 119,300,000 139,100,000 158,300,000 179,800,000 127,250,000 162,600,000 196,200,000 150,200,000 150,325,000 176,900,000 257,300,000 167,100,000 124,775,000 230,900,000 213,700,000 54,500,000 230,800,000 171,400,000 208,900,000 158,700,000 153,700,000 153,500,000 153,100,000 151,400,000 49,098,000 227,309,000 
      net income
    1,182,900,000 908,000,000 1,025,100,000 956,200,000 874,600,000 912,800,000 883,200,000 855,200,000 814,600,000 750,200,000 777,600,000 883,800,000 637,900,000 679,600,000 662,500,000 711,000,000 625,200,000 926,300,000 510,600,000 574,800,000 424,800,000 411,500,000 503,300,000 766,800,000 469,000,000 636,300,000 514,600,000 495,900,000 387,000,000 411,800,000 566,100,000 598,800,000 2,939,200,000 308,600,000 415,800,000 399,800,000 373,400,000 472,800,000 320,100,000 367,800,000 291,700,000 359,900,000 265,000,000 330,400,000 205,100,000 290,000,000 263,800,000 266,600,000 196,250,000 236,300,000 311,300,000 237,400,000 184,650,000 218,900,000 253,400,000 266,300,000 266,925,000 315,000,000 295,600,000 457,100,000 196,400,000 244,300,000 271,200,000 240,200,000 202,600,000 202,300,000 221,800,000 199,100,000 62,065,000 168,691,000 
      yoy
    35.25% -0.53% 16.07% 11.81% 7.37% 21.67% 13.58% -3.24% 27.70% 10.39% 17.37% 24.30% 2.03% -26.63% 29.75% 23.70% 47.18% 125.10% 1.45% -25.04% -9.42% -35.33% -2.20% 54.63% 21.19% 54.52% -9.10% -17.18% -86.83% 33.44% 36.15% 49.77% 687.15% -34.73% 29.90% 8.70% 28.01% 31.37% 20.79% 11.32% 42.22% 24.10% 0.45% 23.93% 4.51% 22.73% -15.26% 12.30% 6.28% 7.95% 22.85% -10.85% -30.82% -30.51% -14.28% -41.74% 35.91% 28.94% 9.00% 90.30% -3.06% 20.76% 22.27% 20.64% 226.43% 19.92%     
      qoq
    30.28% -11.42% 7.21% 9.33% -4.18% 3.35% 3.27% 4.98% 8.58% -3.52% -12.02% 38.55% -6.14% 2.58% -6.82% 13.72% -32.51% 81.41% -11.17% 35.31% 3.23% -18.24% -34.36% 63.50% -26.29% 23.65% 3.77% 28.14% -6.02% -27.26% -5.46% -79.63% 852.43% -25.78% 4.00% 7.07% -21.02% 47.70% -12.97% 26.09% -18.95% 35.81% -19.79% 61.09% -29.28% 9.93% -1.05% 35.85% -16.95% -24.09% 31.13% 28.57% -15.65% -13.61% -4.84% -0.23% -15.26% 6.56% -35.33% 132.74% -19.61% -9.92% 12.91% 18.56% 0.15% -8.79% 11.40% 220.79% -63.21%  
      net income margin %
    71.75% 59.05% 60.59% 58.22% 57.34% 57.61% 57.63% 57.48% 56.60% 56.08% 57.17% 61.31% 52.82% 55.35% 53.55% 52.80% 54.49% 83.46% 43.30% 45.86% 38.67% 38.08% 42.57% 50.38% 41.20% 49.82% 40.43% 42.04% 31.30% 45.54% 53.43% 53.99% 326.58% 34.64% 44.97% 43.02% 40.90% 56.17% 35.32% 39.37% 35.84% 42.33% 32.32% 39.21% 28.01% 38.04% 36.06% 34.29% 53.99% 33.07% 38.14% 33.04% 60.09% 32.04% 31.84% 34.38% -33.87% 36.03% 35.26% 54.97% 25.73% 33.31% 33.32% 34.65% 30.35% 31.10% 34.24% 30.77% 8.97% 24.77% 
      net income attributable to common shareholders of cme group
    1,168,000,000 896,600,000 1,012,200,000 944,200,000 863,700,000 901,300,000 872,100,000 844,400,000 804,300,000 740,800,000 767,800,000 872,700,000 630,000,000 671,100,000 654,100,000 702,000,000                                                       
      earnings per share attributable to common shareholders of cme group:
                                                                          
      basic
    3.25 2.49 2.81 2.63 2.4 2.51 2.43 2.35 2.24 2.06 2.14 2.43 1.76 1.87 1.82 1.96                                                       
      diluted
    3.24 2.49 2.81 2.62 2.4 2.5 2.42 2.35 2.24 2.06 2.14 2.43 1.76 1.87 1.82 1.95                                                       
      weighted-average number of common shares:
                                                                          
      basic
    359,648 359,686 359,658 359,613 359,389 359,400 359,330 359,258 359,023 359,020 358,940 358,933 358,713 358,715 358,641 358,609 358,340 358,363,000,000 358,261,000,000 358,147,000,000 357,764,000,000 357,791,000,000 357,691,000,000 357,524,000,000 357,155,000,000 357,211,000,000 357,060,000,000 356,886,000,000 342,344,000,000 339,586,000,000 339,465,000,000 339,305,000,000 338,707,000,000 338,771,000,000 338,556,000,000 338,339,000,000 337,496,000,000 337,592,000,000 337,289,000,000 337,014,000,000 336,224,000,000 336,323,000,000 336,036,000,000 335,680,000,000  334,424,000,000 334,097,000,000 333,905,000,000  332,763,000,000 332,341,000,000 331,953,000,000  331,377,000,000 331,078,000,000 66,163,000,000  66,458,000,000 66,759,000,000 66,857,000,000 66,299,000,000 66,556,000,000 65,582,000,000 66,234,000,000 66,366,000,000 66,384,000,000 66,329,000,000 66,302,000,000 58,738,000 59,870,000 
      diluted
    360,310 360,422 360,355 360,227 359,944 359,989 359,869 359,833 359,500 359,619 359,429 359,313 359,181 359,288 359,205 359,180 358,929 358,988,000,000 358,888,000,000 358,817,000,000 358,524,000,000 358,590,000,000 358,457,000,000 358,455,000,000 358,239,000,000 358,369,000,000 358,155,000,000 358,047,000,000 343,737,000,000 341,035,000,000 340,872,000,000 340,747,000,000 340,226,000,000 340,329,000,000 340,020,000,000 339,946,000,000 338,966,000,000 339,143,000,000 338,706,000,000 338,549,000,000 337,894,000,000 338,139,000,000 337,796,000,000 337,416,000,000  336,172,000,000 335,800,000,000 335,644,000,000  334,674,000,000 334,073,000,000 333,372,000,000  332,458,000,000 332,162,000,000 66,370,000,000  66,667,000,000 66,974,000,000 67,062,000,000 66,495,000,000 66,744,000,000 65,784,000,000 66,428,000,000 66,548,000,000 66,573,000,000 66,526,000,000 66,439,000,000 58,967,000 60,086,000 
      less: net loss attributable to non-controlling interests
                     200,000 -300,000 -400,000 -800,000 200,000  -600,000 500,000  -800,000 1,000,000                                           
      net income attributable to cme group
                637,900,000 679,600,000 662,500,000 711,000,000 625,200,000 926,500,000 510,300,000 574,400,000 424,000,000 411,700,000 503,300,000 766,200,000 469,500,000 636,300,000 513,800,000 496,900,000             291,700,000 359,900,000 265,000,000 330,400,000 130,800,000 290,000,000 263,800,000 266,800,000 42,100,000 236,700,000 311,200,000 235,800,000 -14,000,000 218,000,000 244,900,000 266,600,000 -407,900,000 316,100,000 293,700,000 456,600,000 196,200,000 244,300,000 270,700,000 240,200,000       
      earnings per common share attributable to cme group:
                                                                          
      basic
                    1,402,500 2,590,000 1,420,000 1,600,000 1,180,000 1,150,000 1,410,000 2,140,000 1,320,000 1,780,000 1,440,000 1,390,000 1,090,000 1,210,000 1,670,000 1,760,000 8,680,000 910,000 1,230,000 1,180,000 1,110,000 1,400,000 950,000 1,090,000 870,000 1,070,000 790,000 980,000 410,000 870,000 790,000 800,000 130,000 710,000 940,000 710,000 240,000 660,000 740,000 4,030,000 -940,000 4,760,000 4,400,000 6,830,000 2,930,000 3,670,000 4,130,000 3,630,000 3,050,000 3,050,000 3,340,000 3,000,000 520 2,820 
      diluted
                    1,400,000 2,580,000 1,420,000 1,600,000 1,180,000 1,150,000 1,400,000 2,140,000 1,310,000 1,780,000 1,430,000 1,390,000 1,090,000 1,210,000 1,660,000 1,760,000 8,630,000 910,000 1,220,000 1,180,000 1,100,000 1,390,000 950,000 1,090,000 860,000 1,060,000 780,000 980,000 420,000 860,000 790,000 790,000 130,000 710,000 930,000 710,000 230,000 660,000 740,000 4,020,000 -1,010,000 4,740,000 4,380,000 6,810,000 2,920,000 3,660,000 4,110,000 3,620,000 3,040,000 3,040,000 3,330,000 3,000,000 520 2,810 
      access and communication fees
                                19,600,000 26,200,000 26,200,000 26,000,000 25,900,000 25,700,000 24,900,000 24,300,000 23,700,000 23,800,000 22,300,000 21,600,000 21,700,000 21,600,000 21,500,000 21,300,000 15,400,000 20,800,000 20,400,000 20,400,000 15,600,000 20,300,000 20,600,000 21,500,000 16,375,000 23,200,000 22,600,000 19,700,000 8,700,000 12,000,000 11,300,000 11,500,000 12,000,000 11,300,000 11,200,000 10,900,000 11,100,000 11,400,000 11,500,000 11,600,000 11,424,000 10,894,000 
      communications
                                4,575,000 6,500,000 5,900,000 5,900,000 5,900,000 6,100,000 6,000,000 6,300,000 6,900,000 6,900,000 6,300,000 6,700,000 6,500,000 7,100,000 6,600,000 7,600,000 6,075,000 7,800,000 8,300,000 8,200,000 6,675,000 9,200,000 8,600,000 8,900,000 7,700,000 9,800,000 10,700,000 10,300,000 7,925,000 11,000,000 10,800,000 9,900,000 9,800,000 9,800,000 10,900,000 10,100,000 11,500,000 11,500,000 11,600,000 12,400,000 13,221,000 11,496,000 
      technology support services
                                14,275,000 18,200,000 19,300,000 19,600,000 21,100,000 19,300,000 18,200,000 18,700,000 18,400,000 17,300,000 17,700,000 17,400,000 17,400,000 15,400,000 16,100,000 15,600,000 10,575,000 13,800,000 14,600,000 13,900,000 9,900,000 13,400,000 13,800,000 12,400,000 9,175,000 11,800,000 12,100,000 12,800,000 9,675,000 13,300,000 13,400,000 12,000,000 13,100,000 12,500,000 12,700,000 12,200,000 11,500,000 11,300,000 11,600,000 11,800,000 12,570,000 11,929,000 
      occupancy and building operations
                                15,300,000 21,000,000 20,200,000 20,000,000 21,100,000 19,800,000 19,200,000 20,100,000 21,400,000 19,600,000 24,400,000 21,300,000 23,100,000 23,100,000 23,500,000 22,800,000 17,775,000 24,700,000 23,200,000 23,200,000 14,175,000 19,200,000 19,000,000 18,500,000 14,450,000 18,800,000 18,700,000 20,300,000 14,225,000 18,500,000 19,000,000 19,400,000 17,200,000 17,000,000 20,200,000 20,500,000 19,000,000 19,100,000 18,100,000 19,400,000 18,484,000 18,960,000 
      earnings per common share:
                                                                          
      basic
                    1,402,500 2,590,000 1,420,000 1,600,000 1,180,000 1,150,000 1,410,000 2,140,000 1,320,000 1,780,000 1,440,000 1,390,000 1,090,000 1,210,000 1,670,000 1,760,000 8,680,000 910,000 1,230,000 1,180,000 1,110,000 1,400,000 950,000 1,090,000 870,000 1,070,000 790,000 980,000 410,000 870,000 790,000 800,000 130,000 710,000 940,000 710,000 240,000 660,000 740,000 4,030,000 -940,000 4,760,000 4,400,000 6,830,000 2,930,000 3,670,000 4,130,000 3,630,000 3,050,000 3,050,000 3,340,000 3,000,000 520 2,820 
      diluted
                    1,400,000 2,580,000 1,420,000 1,600,000 1,180,000 1,150,000 1,400,000 2,140,000 1,310,000 1,780,000 1,430,000 1,390,000 1,090,000 1,210,000 1,660,000 1,760,000 8,630,000 910,000 1,220,000 1,180,000 1,100,000 1,390,000 950,000 1,090,000 860,000 1,060,000 780,000 980,000 420,000 860,000 790,000 790,000 130,000 710,000 930,000 710,000 230,000 660,000 740,000 4,020,000 -1,010,000 4,740,000 4,380,000 6,810,000 2,920,000 3,660,000 4,110,000 3,620,000 3,040,000 3,040,000 3,330,000 3,000,000 520 2,810 
      gains on derivative investments
                                               -1,800,000             -25,000   -100,000 -8,600,000   6,000,000     -390,000 7,504,000 
      total non-operating
                                        54,000,000 23,500,000 2,800,000 4,600,000 -1,400,000  -47,000,000 16,500,000 175,000 -1,300,000 10,100,000 -8,100,000 -4,950,000 -1,600,000 -300,000 -17,900,000 5,875,000 -200,000 41,500,000 -17,800,000 -15,975,000 -26,200,000 -25,200,000 -12,500,000 -31,200,000 -27,200,000 -35,000,000 -15,800,000     -306,692,000 -24,771,000 
      less: net income attributable to non-controlling interest
                                                -50,000   -200,000                       
      equity in net gains of unconsolidated subsidiaries
                                                15,975,000 20,000,000 21,500,000 22,400,000 14,525,000 20,400,000 20,200,000 17,500,000 3,700,000 16,500,000                 
      less: net income attributable to non-controlling interests
                                                    325,000 -400,000 100,000 1,600,000                   
      less: net income attributable to redeemable non-controlling interest
                                                        2,275,000 900,000 8,500,000 -300,000 325,000 -1,100,000 1,900,000 500,000 200,000  500,000        
      equity in net losses of unconsolidated subsidiaries
                                                          -900,000 -800,000 -775,000 -900,000 -1,100,000 -1,100,000           
      restructuring
                                                                -100,000  -200,000 -300,000 100,000 600,000 1,400,000 3,200,000 2,774,000 49,000 
      impairment of long-term investment
                                                                    -5,600,000 -22,400,000     
      securities lending interest income
                                                                      400,000 2,400,000 6,176,000 8,503,000 
      securities lending interest and other costs
                                                                      300,000 -400,000 -3,511,000 -28,906,000 
      equity in losses of unconsolidated subsidiaries
                                                                -1,725,000 -3,900,000 -1,500,000 -1,500,000 -2,300,000 -1,600,000 -1,700,000 -1,200,000 -3,629,000 -20,057,000 
      other income
                                                                      -400,000  -60,000 67,000 
      less: net loss attributable to redeemable non-controlling interest
                                                                          
      quotation data fees
                                                                    82,100,000 81,400,000 82,100,000 85,500,000 87,252,000 75,644,000 
      processing services
                                                                    200,000 100,000 100,000 100,000 129,000 17,910,000 
      guarantee of exercise right privileges
                                                                        35,000 8,016,000 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 
                                                                            
        assets
                                                                            
        current assets:
                                                                            
        cash and cash equivalents
      4,416,900,000 2,446,800,000 1,981,300,000 1,405,300,000 2,892,400,000 2,322,100,000 1,789,900,000 1,436,900,000 2,912,000,000 2,300,200,000 1,880,100,000 1,565,200,000 2,720,100,000 2,130,100,000 1,879,500,000 2,045,700,000 2,834,900,000 1,459,400,000 1,081,000,000 936,400,000 1,633,200,000 1,332,100,000 1,405,400,000 851,700,000 1,551,400,000 1,210,100,000 937,700,000 997,400,000 1,374,500,000 1,406,300,000 1,098,900,000 784,600,000 1,903,600,000 1,631,100,000 1,362,300,000 1,287,800,000 1,868,600,000 1,420,500,000 1,161,100,000 1,146,000,000 1,692,600,000 1,434,300,000 1,151,000,000 1,694,800,000 1,366,100,000 1,087,900,000 1,037,300,000 1,053,700,000 2,469,700,000 2,065,000,000 1,968,000,000 1,843,400,000 1,604,700,000 2,016,900,000 1,293,200,000 1,061,700,000 1,042,300,000 829,300,000 693,600,000 664,700,000 855,200,000 568,200,000 363,600,000 444,200,000 260,600,000 204,100,000 448,700,000 339,200,000 297,895,000 582,421,000 
        marketable securities
      125,000,000 123,200,000 117,600,000 113,900,000 113,200,000 112,300,000 121,700,000 121,000,000 111,700,000 104,100,000 106,700,000 105,000,000 96,000,000 91,300,000 95,100,000 109,600,000 115,000,000 110,300,000 110,900,000 105,200,000 100,900,000 92,400,000 88,100,000 77,500,000 83,200,000 80,100,000 81,800,000 82,400,000 72,900,000 82,800,000 80,900,000 90,400,000 90,100,000 88,000,000 84,300,000 87,100,000 83,300,000 83,300,000 79,800,000 79,200,000 72,500,000 72,400,000 76,300,000 78,800,000 74,700,000 72,800,000 72,900,000 72,200,000 68,400,000 65,000,000 61,300,000 60,700,000 56,600,000 62,000,000 42,700,000 45,400,000 47,600,000 46,600,000 55,000,000 54,600,000 50,200,000 44,300,000 45,000,000 46,300,000       
        accounts receivable
      639,200,000 642,900,000 667,600,000 770,200,000 573,100,000 629,400,000 599,500,000 628,200,000 535,600,000 558,400,000 599,400,000 723,600,000 483,200,000 580,200,000 582,300,000 608,900,000 434,500,000 470,400,000 509,600,000 547,000,000 461,300,000 490,900,000 532,100,000 799,700,000 491,800,000 545,700,000 593,700,000 559,500,000 553,300,000 386,300,000 433,900,000 444,100,000 359,700,000 390,300,000 416,400,000 426,600,000 364,400,000 395,700,000 427,000,000 389,300,000 357,800,000 363,800,000 399,900,000 383,400,000 341,200,000 344,800,000 334,900,000 344,600,000 302,700,000 311,900,000 359,100,000 309,200,000 267,500,000 296,900,000 336,900,000 360,000,000 289,400,000 369,500,000 385,800,000 394,000,000 297,500,000 333,400,000 330,800,000 316,900,000 248,300,000 264,000,000 282,400,000 279,500,000 234,001,000 339,941,000 
        other current assets
      522,100,000 546,700,000 525,600,000 461,500,000 559,400,000 622,000,000 567,500,000 647,700,000 1,138,400,000 622,000,000 538,300,000 547,200,000 529,800,000 476,400,000 463,700,000 503,400,000 427,800,000 362,700,000 361,500,000 295,400,000 306,700,000 350,100,000 319,200,000 315,900,000 364,400,000 695,100,000 359,700,000 345,700,000 430,500,000 1,795,500,000 1,801,600,000 646,800,000 367,800,000 340,800,000 228,900,000 145,800,000 171,700,000 269,400,000 220,700,000 141,500,000 228,600,000 267,100,000 260,000,000 154,800,000 196,500,000 275,600,000 196,200,000 180,700,000 209,700,000 413,400,000 260,400,000 172,500,000 204,300,000 245,700,000 160,500,000 149,700,000 232,600,000 168,400,000 178,900,000 150,400,000 146,100,000 106,900,000 103,800,000 165,500,000 165,600,000 119,600,000 137,000,000 112,700,000 189,084,000 92,893,000 
        performance bonds and guaranty fund contributions
      159,656,100,000 149,041,200,000 142,158,000,000 120,694,500,000 98,895,400,000 99,457,000,000 85,670,000,000 94,473,900,000 90,192,500,000 87,192,100,000 113,241,600,000 128,090,700,000 135,249,200,000 139,974,900,000 138,430,400,000 167,736,700,000 157,949,600,000 149,191,600,000 141,299,800,000 123,414,000,000 86,781,800,000 88,083,800,000 79,441,400,000 100,371,800,000 37,077,000,000 41,161,300,000 32,489,500,000 33,620,200,000 39,455,500,000 37,843,900,000 36,885,200,000 39,088,900,000 44,185,300,000 46,942,300,000 47,405,000,000 44,421,200,000 37,543,500,000 31,607,100,000 36,138,600,000 37,497,300,000 35,553,000,000 49,321,200,000 42,167,900,000 45,174,200,000  32,385,300,000 20,089,900,000 21,658,500,000                       
        total current assets
      165,359,300,000 152,800,800,000 145,450,100,000 123,445,400,000 103,033,500,000 103,142,800,000 88,748,600,000 97,307,700,000 94,890,200,000 90,776,800,000 116,366,100,000 131,031,700,000 139,078,300,000 143,252,900,000 141,451,000,000 171,004,300,000 161,761,800,000 151,594,400,000 144,849,000,000 126,745,500,000 89,283,900,000 90,349,300,000 81,786,200,000 102,416,600,000 39,567,800,000 43,692,300,000 34,462,400,000 35,605,200,000 41,886,700,000 41,514,800,000 40,300,500,000 41,054,800,000 46,906,500,000 49,392,500,000 49,496,900,000 46,368,500,000 40,031,500,000 33,776,000,000 38,027,200,000 39,253,300,000 37,904,500,000 51,458,800,000 44,055,100,000 47,486,000,000 42,545,300,000 34,166,400,000 21,731,200,000 23,309,700,000 24,405,600,000 19,048,100,000 16,924,600,000 12,297,800,000 8,717,900,000 10,016,800,000 8,240,900,000 9,354,600,000 10,945,800,000 9,091,300,000 5,555,100,000 4,587,600,000 5,387,500,000 4,049,200,000 4,602,000,000 5,483,000,000 6,699,000,000 7,506,200,000 9,512,400,000 10,900,900,000 19,111,528,000 9,558,334,000 
        property
      362,700,000    386,200,000    409,500,000    455,500,000    505,300,000    579,200,000    544,000,000    448,700,000    399,700,000    425,200,000    491,700,000    508,900,000    513,400,000    724,000,000            738,500,000    707,215,000  
        intangible assets—trading products
      17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,175,300,000 17,040,500,000 17,040,500,000 17,040,500,000 17,040,500,000    17,040,500,000    16,982,000,000      
        intangible assets—other
      2,610,700,000 2,667,800,000 2,728,500,000 2,773,200,000 2,821,600,000 2,892,200,000 2,932,500,000 2,990,000,000 3,050,200,000 3,095,400,000 3,160,300,000 3,217,400,000 3,269,700,000 3,302,200,000 3,382,100,000 3,463,200,000 3,532,000,000 3,592,600,000 3,659,300,000 3,716,800,000 4,865,300,000 4,893,800,000 4,931,700,000 4,997,900,000 5,117,700,000 5,161,200,000 5,308,700,000 5,380,600,000 5,500,100,000 2,268,400,000 2,299,000,000 2,322,600,000 2,346,300,000 2,370,000,000 2,393,800,000 2,417,800,000 2,441,800,000 2,465,900,000 2,489,900,000 2,513,900,000 2,537,900,000 2,562,700,000 2,587,600,000 2,612,500,000 2,637,400,000 2,662,300,000 2,690,900,000 2,716,100,000 2,741,200,000 2,776,200,000 2,801,900,000 2,827,800,000 2,853,700,000 2,879,500,000 2,888,700,000 3,280,300,000 3,312,800,000    3,453,300,000    3,246,500,000      
        goodwill
      10,514,700,000 10,514,500,000 10,523,900,000 10,499,500,000 10,486,900,000 10,514,100,000 10,488,600,000 10,489,600,000 10,495,300,000 10,477,600,000 10,490,700,000 10,490,500,000 10,482,500,000 10,447,300,000 10,484,100,000 10,515,800,000 10,528,000,000 10,529,000,000 10,543,000,000 10,534,300,000 10,798,800,000 10,755,800,000 10,742,500,000 10,742,500,000 10,742,500,000 10,774,400,000 10,795,300,000 10,850,300,000 10,805,300,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,569,000,000 7,566,900,000 7,538,300,000 7,520,600,000 7,984,700,000 7,984,000,000 7,984,400,000 7,985,400,000 7,985,400,000 7,983,600,000 7,961,000,000 7,962,800,000 7,978,600,000 7,549,200,000 7,549,300,000 7,523,100,000 7,517,000,000 7,519,209,000 7,765,049,000 
        other assets
      2,401,500,000 3,631,000,000 3,666,300,000 3,567,000,000 3,543,500,000 3,684,500,000 3,649,800,000 3,695,100,000 3,685,600,000 3,655,800,000 3,674,200,000 3,684,000,000 3,714,400,000 3,788,300,000 3,697,200,000 3,265,200,000 3,277,900,000 3,361,700,000 1,944,900,000 1,951,600,000 1,957,100,000 2,037,400,000 2,040,500,000 2,061,600,000 2,068,000,000 2,097,100,000 2,107,400,000 2,135,400,000 1,659,600,000 1,473,900,000 1,475,500,000 1,410,400,000 1,394,400,000 1,427,300,000 1,509,300,000 1,533,800,000 1,726,600,000 1,838,400,000 1,926,300,000 1,806,900,000 1,693,100,000 1,687,700,000 1,776,900,000 1,782,300,000 1,805,600,000 1,898,600,000 1,941,500,000 1,888,600,000 1,873,300,000 1,697,100,000 1,698,700,000 1,842,000,000 1,825,400,000 1,677,500,000 1,551,500,000 812,500,000 653,700,000 611,800,000 816,300,000 878,300,000 394,400,000 427,200,000 424,600,000 433,100,000 435,800,000 478,100,000 479,500,000 468,900,000 469,329,000 868,543,000 
        total assets
      198,424,200,000 187,144,600,000 179,907,000,000 157,831,600,000 137,447,000,000 137,795,100,000 123,379,300,000 132,053,700,000 129,706,100,000 125,598,200,000 151,296,700,000 166,039,200,000 174,175,700,000 178,431,500,000 176,671,300,000 205,917,700,000 196,780,300,000 186,774,300,000 178,699,100,000 160,652,100,000 124,659,600,000 125,758,800,000 117,214,800,000 137,932,300,000 75,215,300,000 79,417,600,000 70,349,500,000 71,614,500,000 77,475,700,000 70,364,100,000 69,199,300,000 69,919,300,000 75,791,200,000 78,323,000,000 78,543,800,000 75,476,000,000 69,369,400,000 63,251,300,000 67,625,600,000 68,768,200,000 67,371,500,000 80,949,600,000 73,663,100,000 77,128,400,000 72,241,500,000 63,970,300,000 51,611,300,000 53,167,100,000 54,277,800,000 48,979,900,000 46,882,700,000 42,421,800,000 38,863,200,000 39,858,000,000 37,945,900,000 39,289,100,000 40,758,700,000 38,887,600,000 35,589,200,000 34,709,000,000 35,046,100,000 33,686,500,000 34,258,900,000 35,202,400,000 35,651,000,000 36,519,600,000 38,531,200,000 39,915,500,000 48,158,654,000 39,255,052,000 
        liabilities and equity
                                                                            
        current liabilities:
                                                                            
        accounts payable
      71,800,000 74,900,000 92,300,000 100,200,000 79,900,000 129,900,000 99,900,000 111,000,000 90,600,000 53,800,000 50,900,000 97,200,000 121,400,000 95,000,000 80,900,000 80,800,000 48,800,000 71,000,000 47,200,000 51,600,000 69,300,000 99,500,000 88,000,000 74,300,000 61,900,000 61,500,000 51,600,000 65,300,000 116,000,000 53,900,000 27,800,000 25,000,000 31,300,000 36,100,000 25,500,000 38,400,000 26,200,000 34,500,000 35,600,000 32,200,000 28,700,000 38,100,000 22,100,000 34,000,000 36,900,000 35,000,000 32,100,000 43,100,000 36,200,000 41,000,000 37,000,000 31,300,000 41,700,000 44,500,000 38,700,000 29,000,000 31,100,000 40,700,000 39,700,000 58,400,000 51,800,000 43,800,000 37,600,000 36,300,000 46,700,000 36,100,000 38,500,000 46,500,000 71,012,000 53,130,000 
        short-term debt
          749,800,000 749,700,000 749,500,000 749,300,000    16,300,000 16,000,000 14,500,000   749,400,000 749,200,000           574,200,000                    749,900,000 749,700,000 1,499,400,000 1,499,000,000 749,700,000 749,600,000       420,500,000 420,500,000 300,000,000 299,900,000 299,800,000 299,700,000 250,000,000 249,900,000 249,850,000 503,703,000 
        other current liabilities
      568,800,000 471,100,000 544,500,000 625,500,000 2,588,800,000 485,200,000 454,600,000 767,200,000 3,133,800,000 634,600,000 593,200,000 839,700,000 2,300,900,000 488,300,000 488,800,000 641,100,000 1,650,600,000 405,300,000 379,100,000 478,100,000 1,346,800,000 448,000,000 672,500,000 607,900,000 1,384,800,000 691,600,000 393,600,000 592,500,000 1,126,900,000 256,300,000 266,600,000 331,400,000 1,456,300,000 244,600,000 239,100,000 345,200,000 1,376,700,000 247,000,000 246,800,000 321,600,000 1,242,800,000 239,500,000 242,600,000 286,900,000 927,500,000 207,600,000 254,700,000 328,100,000 1,169,800,000 229,700,000 380,700,000 344,400,000 240,700,000 200,100,000 213,200,000 343,100,000 250,200,000 204,100,000 241,200,000 361,800,000 270,400,000 205,500,000 237,900,000 317,600,000 195,200,000 157,800,000 179,300,000 255,500,000 211,767,000 598,321,000 
        total current liabilities
      160,296,700,000 149,587,200,000 142,794,800,000 121,420,200,000 102,313,900,000 100,821,800,000 86,974,000,000 96,101,400,000 93,416,900,000 87,880,500,000 113,885,700,000 129,043,900,000 137,687,500,000 140,572,700,000 139,000,100,000 168,458,600,000 160,398,400,000 150,417,100,000 142,012,800,000 124,222,500,000 88,197,900,000 88,630,900,000 80,201,400,000 101,053,700,000 38,522,500,000 41,913,500,000 32,934,700,000 34,272,400,000 41,272,600,000 38,154,100,000 37,179,600,000 39,445,300,000 45,672,900,000 47,223,000,000 47,669,600,000 44,804,800,000 38,945,600,000 31,886,400,000 36,419,800,000 37,848,100,000 36,824,500,000 49,598,800,000 42,432,600,000 45,495,100,000 41,531,200,000 32,627,900,000 20,376,700,000 22,029,700,000 23,311,000,000 17,213,200,000 16,192,900,000 11,786,700,000 7,616,900,000 8,389,500,000 6,659,500,000 8,109,900,000 9,615,200,000 7,922,300,000 4,522,700,000 3,744,100,000 4,781,200,000 3,666,200,000 4,334,300,000 5,163,900,000 6,523,600,000 7,318,400,000 9,006,700,000 10,474,600,000 18,642,975,000 9,608,624,000 
        long-term debt
      3,422,300,000 3,421,300,000 3,420,400,000 3,419,400,000 2,678,200,000 2,677,700,000 2,677,200,000 2,676,700,000 3,425,400,000 3,424,700,000 3,423,800,000 3,423,100,000 3,422,400,000 3,421,800,000 3,436,700,000 3,437,100,000 2,695,700,000 2,695,700,000 3,444,600,000 3,443,600,000 3,443,800,000 3,442,200,000 3,440,900,000 3,539,800,000 3,743,200,000 3,873,300,000 4,072,900,000 4,292,000,000 3,826,800,000 3,419,600,000 3,419,000,000 2,233,500,000 2,233,100,000 2,232,600,000 2,232,100,000 2,231,600,000 2,231,200,000 2,230,700,000 2,230,200,000 2,229,800,000 2,241,400,000 2,241,200,000 2,241,000,000 2,851,900,000 2,107,900,000 2,107,700,000 2,107,500,000 2,107,400,000 2,107,200,000 2,107,000,000 1,358,200,000 1,358,000,000 2,106,800,000 2,106,400,000 2,107,700,000 2,107,200,000 2,106,800,000 2,106,300,000 2,105,800,000 2,105,300,000 2,104,800,000 2,104,400,000 2,524,400,000 2,823,800,000 2,014,700,000 2,239,300,000 2,738,600,000 2,848,200,000 2,966,079,000 2,412,817,000 
        deferred income tax liabilities
      5,242,200,000 5,220,100,000 5,232,600,000 5,240,100,000 5,246,800,000 5,310,000,000 5,309,100,000 5,317,200,000 5,327,700,000 5,332,700,000 5,343,600,000 5,356,800,000 5,361,100,000 5,351,500,000 5,363,000,000 5,381,700,000 5,390,400,000 5,392,400,000 5,399,400,000 5,371,900,000 5,607,000,000 5,620,800,000 5,607,300,000 5,622,100,000 5,635,200,000 5,614,400,000 5,645,100,000 5,662,700,000 5,665,900,000 4,882,700,000 4,863,100,000 4,846,600,000 4,857,700,000 7,437,000,000 7,318,800,000 7,308,400,000 7,291,000,000 7,317,700,000 7,352,700,000 7,330,800,000 7,358,300,000 7,341,500,000 7,339,800,000 7,299,700,000 7,302,700,000 7,308,400,000 7,271,900,000 7,276,100,000 7,249,700,000 7,306,500,000 7,248,200,000 7,412,100,000 7,413,300,000 7,319,800,000 7,262,200,000 7,256,500,000               
        other liabilities
      734,800,000 725,700,000 720,200,000 721,200,000 721,200,000 769,400,000 783,200,000 804,200,000 798,200,000 808,700,000 825,800,000 831,000,000 826,000,000 834,700,000 869,800,000 903,500,000 896,500,000 987,000,000 1,054,900,000 1,058,200,000 1,059,400,000 1,054,500,000 1,126,300,000 1,118,000,000 1,155,100,000 1,203,100,000 1,211,900,000 1,200,900,000 745,100,000 612,000,000 614,000,000 621,100,000 615,700,000 566,500,000 546,500,000 577,000,000 560,900,000 551,600,000 549,000,000 518,100,000 395,500,000 391,300,000 390,900,000 386,200,000 376,200,000 389,200,000 389,800,000 443,800,000 449,400,000 375,300,000 228,800,000 227,000,000 220,500,000 254,100,000 218,100,000 196,400,000 187,600,000 190,000,000 201,100,000 192,400,000 191,500,000 177,400,000 172,900,000 170,300,000 165,800,000 161,700,000 142,300,000 133,100,000 132,745,000 114,503,000 
        total liabilities
      169,696,000,000 158,954,300,000 152,168,000,000 130,800,900,000 110,960,100,000 109,578,900,000 95,743,500,000 104,899,500,000 102,968,200,000 97,446,600,000 123,478,900,000 138,654,800,000 147,297,000,000 150,180,700,000 148,669,600,000 178,180,900,000 169,381,000,000 159,492,200,000 151,911,700,000 134,096,200,000 98,308,100,000 98,748,400,000 90,375,900,000 111,333,600,000 49,056,000,000 52,604,300,000 43,864,600,000 45,428,000,000 51,510,400,000 47,068,400,000 46,075,700,000 47,146,500,000 53,379,400,000 57,459,100,000 57,767,000,000 54,921,800,000 49,028,700,000 41,986,400,000 46,551,700,000 47,926,800,000 46,819,700,000 59,572,800,000 52,404,300,000 56,032,900,000 51,318,000,000 42,433,200,000 30,145,900,000 31,857,000,000 33,117,300,000 27,002,000,000 25,028,100,000 20,783,800,000 17,357,500,000 18,069,800,000 16,247,500,000 17,670,000,000 19,136,400,000 17,953,800,000 14,616,100,000 13,852,900,000 14,917,900,000 13,717,900,000 14,807,500,000 15,945,400,000 16,350,000,000 17,389,300,000 19,549,900,000 21,116,400,000 29,470,085,000 20,226,292,000 
        shareholders’ equity:
                                                                            
        preferred stock, 0.01 par value...
                                                                            
        class a common stock, 0.01 par value...
      3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,600,000 3,700,000 3,600,000 3,600,000 3,600,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,400,000 3,300,000 3,300,000 3,300,000 3,300,000 3,300,000 3,300,000 3,300,000 3,300,000 3,300,000 3,300,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 700,000 664,000 671,000 
        class b common stock, 0.01 par value...
                                                                            
        additional paid-in capital
      22,209,500,000 22,436,900,000 22,435,100,000 22,416,000,000 22,403,000,000 22,375,300,000 22,372,100,000 22,345,600,000 22,334,700,000 22,309,100,000 22,307,600,000 22,281,500,000 22,261,600,000 22,235,300,000 22,232,300,000 22,206,300,000 22,190,300,000 21,203,800,000 21,219,100,000 21,193,500,000 21,185,500,000 21,157,200,000 21,148,900,000 21,120,400,000 21,113,200,000 21,107,500,000 21,109,200,000 21,062,100,000 21,054,300,000 17,927,200,000 17,928,300,000 17,904,100,000 17,896,900,000 17,874,600,000 17,870,400,000 17,842,100,000 17,826,900,000 17,780,000,000 17,767,900,000 17,737,600,000 17,721,600,000 17,696,200,000 17,674,800,000 17,638,600,000 17,596,600,000 17,561,300,000 17,545,600,000 17,521,100,000 17,504,900,000 17,465,300,000 17,452,900,000 17,237,500,000 17,213,100,000 17,177,200,000 17,162,100,000 17,140,000,000 17,115,100,000 17,100,100,000 17,244,900,000 17,293,100,000 17,277,700,000 17,258,100,000 16,920,300,000 16,918,600,000 17,186,600,000 17,144,400,000 17,136,500,000 17,112,900,000 17,128,451,000 17,314,171,000 
        retained earnings
      6,433,200,000 5,706,400,000 5,254,900,000 4,685,900,000 4,185,800,000 5,848,200,000 5,355,100,000 4,891,100,000 4,455,200,000 5,956,200,000 5,606,800,000 5,229,900,000 4,746,800,000 6,111,700,000 5,797,500,000 5,498,900,000 5,151,900,000 6,037,400,000 5,434,500,000 5,247,300,000 4,995,900,000 5,775,100,000 5,668,500,000 5,469,900,000 5,008,700,000 5,704,200,000 5,336,800,000 5,091,100,000 4,855,300,000 5,346,400,000 5,173,300,000 4,845,400,000 4,497,200,000 2,973,800,000 2,889,700,000 2,697,900,000 2,524,500,000 3,458,600,000 3,189,300,000 3,072,300,000 2,907,600,000 3,771,800,000 3,575,500,000 3,479,300,000 3,317,300,000 3,842,000,000 3,709,800,000 3,603,900,000 3,494,600,000 4,326,500,000 4,239,200,000 4,079,000,000 3,993,400,000 4,408,600,000 4,340,300,000 4,243,600,000 4,324,600,000 3,671,600,000 3,448,600,000 3,248,800,000 2,885,800,000 2,766,800,000 2,599,300,000 2,404,200,000 2,239,900,000 2,113,900,000 1,988,000,000 1,842,500,000 1,719,733,000 1,734,404,000 
        accumulated other comprehensive income
      81,900,000 43,400,000 45,400,000 -74,800,000 -105,500,000 -10,900,000 -95,000,000 -86,100,000 -55,600,000 -117,300,000 -100,200,000 -130,600,000 -133,300,000 -99,800,000 -31,700,000 28,000,000 53,500,000 37,300,000 106,000,000 83,500,000 134,900,000 43,700,000 -13,100,000 -26,200,000 3,400,000 -32,200,000 5,600,000 800,000 5,300,000 18,700,000 18,600,000 19,900,000 14,300,000 12,100,000 13,300,000 10,800,000 -14,100,000 22,900,000 113,300,000 28,100,000 -80,800,000 -94,600,000 5,100,000 -25,800,000 6,200,000 130,500,000 206,700,000 176,300,000 152,000,000 177,200,000 153,200,000 230,000,000 209,300,000 119,700,000 114,300,000 164,800,000 111,600,000 91,900,000 208,300,000 244,900,000 -104,100,000 -124,800,000 -136,800,000 -133,800,000 -126,200,000 -128,700,000     
        total cme group shareholders’ equity
      28,728,200,000 28,190,300,000 27,739,000,000 27,030,700,000 26,486,900,000 28,216,200,000 27,635,800,000 27,154,200,000 26,737,900,000 28,151,600,000 27,817,800,000 27,384,400,000 26,878,700,000 28,250,800,000 28,001,700,000 27,736,800,000 27,399,300,000 27,282,100,000 26,763,200,000 26,527,900,000 26,319,900,000 26,979,600,000 26,807,900,000 26,567,700,000 26,128,900,000 26,783,200,000 26,455,200,000 26,157,600,000 25,918,500,000              21,258,800,000 21,095,500,000 20,923,500,000 21,537,100,000 21,465,400,000 21,304,600,000 21,154,800,000 21,972,300,000 21,848,600,000 21,549,800,000 21,419,100,000                  
        total liabilities and equity
      198,424,200,000 187,144,600,000 179,907,000,000 157,831,600,000 137,447,000,000 137,795,100,000 123,379,300,000 132,053,700,000 129,706,100,000 125,598,200,000 151,296,700,000 166,039,200,000 174,175,700,000 178,431,500,000 176,671,300,000 205,917,700,000 196,780,300,000 186,774,300,000 178,699,100,000 160,652,100,000 124,659,600,000 125,758,800,000 117,214,800,000 137,932,300,000 75,215,300,000 79,417,600,000 70,349,500,000 71,614,500,000 77,475,700,000 70,364,100,000 69,199,300,000 69,919,300,000 75,791,200,000 78,323,000,000 78,543,800,000 75,476,000,000 69,369,400,000 63,251,300,000 67,625,600,000 68,768,200,000 67,371,500,000 80,949,600,000 73,663,100,000 77,128,400,000 72,241,500,000 63,970,300,000 51,611,300,000 53,167,100,000 54,277,800,000 48,979,900,000 46,882,700,000 42,421,800,000 38,863,200,000                  
        property, net of accumulated depreciation and amortization of 983.2 and 1,024.3
       355,200,000                                                                     
        property, net of accumulated depreciation and amortization of 960.8 and 1,024.3
        362,900,000                                                                    
        property, net of accumulated depreciation and amortization of 955.5 and 1,024.3
         371,200,000                                                                   
        property, net of accumulated depreciation and amortization of 1,012.4 and 931.1
           386,200,000                                                                 
        property, net of accumulated depreciation and amortization of 984.7 and 931.1
            384,500,000                                                                
        property, net of accumulated depreciation and amortization of 958.8 and 931.1
             396,000,000                                                               
        property, net of accumulated depreciation and amortization of 903.8 and 1,145.2
               417,300,000                                                             
        property, net of accumulated depreciation and amortization of 874.1 and 1,145.2
                430,100,000                                                            
        property, net of accumulated depreciation and amortization of 1,175.4 and 1,145.2
                 440,300,000                                                           
        property, net of accumulated depreciation and amortization of 1,111.0 and 1,039.4
                   465,500,000                                                         
        property, net of accumulated depreciation and amortization of 1,097.3 and 1,039.4
                    481,600,000                                                        
        property, net of accumulated depreciation and amortization of 1,070.5 and 1,039.4
                     493,900,000                                                       
        non-controlling interests
                        24,200,000 28,000,000 31,600,000 30,800,000 31,000,000 31,000,000 30,400,000 30,100,000 29,700,000 28,900,000 46,800,000                                          
        total equity
                      27,399,300,000 27,282,100,000 26,787,400,000 26,555,900,000 26,351,500,000 27,010,400,000 26,838,900,000 26,598,700,000 26,159,300,000 26,813,300,000 26,484,900,000 26,186,500,000 25,965,300,000                20,923,500,000 21,537,100,000 21,465,400,000 21,310,100,000 21,160,500,000 21,977,900,000 21,854,600,000 21,555,800,000 21,424,900,000                  
        property, net of accumulated depreciation and amortization of 1,046.0 and 961.2
                       521,300,000                                                     
        assets held for sale
                        1,486,200,000 1,447,500,000                                                   
        property, net of accumulated depreciation and amortization of 980.4 and 961.2
                        527,600,000                                                    
        liabilities held for sale
                        286,700,000 278,800,000                                                   
        property, net of accumulated depreciation and amortization of 946.5 and 961.2
                         528,600,000                                                   
        property, net of accumulated depreciation and amortization of 931.9 and 867.5
                           547,200,000                                                 
        property, net of accumulated depreciation and amortization of 894.4 and 867.5
                            538,600,000                                                
        property, net of accumulated depreciation and amortization of 885.6 and 867.5
                             538,400,000                                               
        property, net of accumulated depreciation and amortization of 837.3 and 761.1
                               517,300,000                                             
        property, net of accumulated depreciation and amortization of 843.6 and 761.1
                                500,400,000                                            
        property, net of accumulated depreciation and amortization of 789.8 and 761.1
                                 467,700,000                                           
        property, net of accumulated depreciation and amortization of 736.8 and 676.6
                                   362,700,000                                         
        total shareholders’ equity
                                   23,295,700,000 23,123,600,000 22,772,800,000 22,411,800,000 20,863,900,000 20,776,800,000 20,554,200,000 20,340,700,000 21,264,900,000 21,073,900,000 20,841,400,000 20,551,800,000 21,376,800,000            21,708,800,000 21,620,000,000 21,549,100,000 21,552,000,000 20,864,300,000 20,902,500,000 20,787,500,000 20,060,100,000 19,900,800,000 19,383,500,000 19,189,700,000 19,301,000,000 19,130,300,000 18,981,300,000 18,799,100,000 18,688,569,000 19,028,760,000 
        property, net of accumulated depreciation and amortization of 726.9 and 676.6
                                    380,000,000                                        
        property, net of accumulated depreciation and amortization of 704.8 and 676.6
                                     387,200,000                                       
        property, net of accumulated depreciation and amortization of 649.9 and 597.2
                                       388,900,000                                     
        property, net of accumulated depreciation and amortization of 631.8 and 597.2
                                        399,500,000                                    
        property, net of accumulated depreciation and amortization of 611.8 and 597.2
                                         411,600,000                                   
        property, net of accumulated depreciation and amortization of 577.4 and 788.6
                                           426,700,000                                 
        property, net of accumulated depreciation and amortization of 655.3 and 788.6
                                            437,900,000                                
        property, net of accumulated depreciation and amortization of 680.6 and 788.6
                                             449,800,000                               
        property, net of accumulated depreciation and amortization of 777.2 and 741.0
                                               496,100,000                             
        property, net of accumulated depreciation and amortization of 781.5 and 741.0
                                                499,200,000                            
        cme group shareholders’ equity:
                                                                            
        property, net of accumulated depreciation and amortization of 764.3 and 741.0
                                                 503,300,000                           
        cash performance bonds and guaranty fund contributions
                                                  40,566,800,000    21,355,100,000 16,192,800,000 14,275,800,000 9,912,000,000 6,584,800,000 7,395,300,000 6,407,600,000 7,737,800,000 9,333,900,000 7,677,500,000 4,241,800,000 3,323,900,000 4,038,500,000          
        non-controlling interest
                                                     5,500,000 5,700,000 5,600,000 6,000,000 6,000,000 5,800,000                  
        property, net of accumulated depreciation and amortization of 745.1 and 678.4
                                                   498,700,000                         
        property, net of accumulated depreciation and amortization of 722.6 and 678.4
                                                    503,400,000                        
        property, net of accumulated depreciation and amortization of 694.4 and 678.4
                                                     508,400,000                       
        redeemable non-controlling interest
                                                         82,200,000 80,800,000 79,400,000 78,400,000 70,000,000 70,300,000 69,500,000 70,600,000 68,600,000 68,100,000 67,800,000 67,900,000 67,300,000       
        property, net of accumulated depreciation and amortization of 688.5 and 640.4
                                                       714,200,000                     
        property, net of accumulated depreciation and amortization of 661.2 and 640.4
                                                        713,200,000                    
        property, net of accumulated depreciation and amortization of 651.3 and 640.4
                                                         709,900,000                   
        series a junior participating preferred stock, 0.01 par value...
                                                                            
        property, net of accumulated depreciation and amortization of 611.5 and 576.3
                                                           705,400,000                 
        liabilities and shareholders’ equity
                                                                            
        total liabilities and shareholders’ equity
                                                           39,858,000,000 37,945,900,000 39,289,100,000 40,758,700,000 38,887,600,000 35,589,200,000 34,709,000,000 35,046,100,000 33,686,500,000 34,258,900,000 35,202,400,000 35,651,000,000 36,519,600,000 38,531,200,000 39,915,500,000 48,158,654,000 39,255,052,000 
        property, net of accumulated depreciation and amortization of 581.2 and 576.3
                                                            703,700,000                
        property, net of accumulated depreciation and amortization of 598.6 and 576.3
                                                             816,500,000               
        property, net of accumulated depreciation and amortization
                                                              821,900,000    786,800,000          
        deferred tax liabilities
                                                              7,226,800,000 7,735,200,000 7,786,500,000 7,811,100,000 7,840,400,000 7,769,900,000 7,775,900,000 7,787,400,000 7,645,900,000 7,669,900,000 7,662,300,000 7,660,500,000 7,728,286,000 8,090,348,000 
        property, net of accumulated depreciation and amortization of 565.4 and 512.9
                                                               813,800,000             
        intangible assets – trading products
                                                               17,040,500,000 17,040,500,000 17,040,500,000  17,038,000,000 17,038,000,000 17,038,000,000  16,982,000,000 16,982,000,000 16,982,000,000 16,982,000,000 16,959,000,000 
        intangible assets – other
                                                               3,345,800,000 3,379,100,000 3,420,200,000  3,470,500,000 3,502,000,000 3,535,000,000  3,277,100,000 3,308,900,000 3,335,300,000 3,369,373,000 3,443,331,000 
        property, net of accumulated depreciation and amortization of 556.5 and 512.9
                                                                812,800,000            
        property, net of accumulated depreciation and amortization of 535.2 and 512.9
                                                                 797,000,000           
        cash performance bonds and security deposits
                                                                   2,996,400,000 3,758,800,000 4,510,100,000 5,981,900,000 6,824,800,000 8,538,900,000 9,765,600,000 17,653,513,000 7,506,397,000 
        property, net of accumulated depreciation and amortization of 572.0 and 546.1
                                                                   740,600,000         
        property, net of accumulated depreciation and amortization of 546.0 and 546.1
                                                                    729,500,000        
        property, net of amortization of 573.4 and 546.1
                                                                     734,700,000       
        collateral from securities lending, at fair value
                                                                         155,400,000 426,958,000 909,360,000 
        marketable securities, including pledged securities of — and 283.8
                                                                      42,600,000      
        payable under securities lending agreements
                                                                         157,100,000 456,833,000 947,073,000 
        marketable securities, including pledged securities of 50.0 and 283.8
                                                                       93,700,000     
        property, net of accumulated depreciation and amortization of 525.8 and 479.5
                                                                       726,900,000     
        marketable securities, including pledged securities of 64.6 and 283.8
                                                                        105,400,000    
        property, net of accumulated depreciation and amortization of 506.0 and 479.5
                                                                        725,300,000    
        accumulated other comprehensive loss
                                                                        -143,900,000 -157,000,000 -160,279,000 -20,486,000 
        marketable securities, including pledged securities of 114.6 and 283.8
                                                                         248,500,000   
        property, net of accumulated depreciation and amortization of 496.5 and 479.5
                                                                         711,400,000   
        marketable securities available for sale, including pledged securities of 283,842 and 100,061
                                                                          310,077,000  
        marketable securities available for sale, including pledged securities of 83,914 and 100,061
                                                                           127,322,000 
        property, net of accumulated depreciation and amortization of 458,861 and 435,121
                                                                           660,795,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 
                                                                             
          cash flows from operating activities
                                                                             
          net income
        1,182,900,000 908,000,000 1,025,100,000 956,200,000 874,600,000 912,800,000 883,200,000 855,200,000 814,600,000 750,200,000 777,600,000 883,800,000 637,900,000 679,600,000 662,500,000 711,000,000 625,200,000 926,300,000 510,600,000 574,800,000 424,800,000 411,500,000 503,300,000 766,800,000 469,000,000 636,300,000 514,600,000 495,900,000 387,000,000 411,800,000 566,100,000 598,800,000 2,939,200,000 308,600,000 415,800,000 399,800,000 373,400,000 472,800,000 320,100,000 367,800,000 291,700,000 359,900,000 265,000,000 330,400,000 306,500,000 290,000,000 263,800,000 266,600,000 193,100,000 236,300,000 311,300,000 237,400,000 168,100,000 218,900,000 253,400,000 266,300,000 746,700,000 315,000,000 295,600,000 457,100,000 196,400,000 244,300,000 271,200,000 240,200,000 202,600,000 202,300,000 221,800,000 199,100,000 62,065,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                                             
          stock-based compensation
        28,900,000 24,000,000 20,700,000 21,200,000 27,100,000 20,300,000 18,800,000 23,300,000 24,300,000 18,900,000 19,500,000 20,200,000 25,500,000 19,400,000 19,400,000 20,000,000 18,600,000 15,600,000 19,400,000 21,600,000 26,700,000 23,800,000 22,400,000 23,100,000 2,300,000 14,400,000 38,100,000 18,300,000 46,000,000 16,600,000 16,200,000 17,700,000 15,200,000 15,100,000 12,800,000 14,900,000 23,900,000 12,300,000 14,000,000 16,000,000 15,600,000 11,500,000 19,000,000 14,700,000 13,900,000 14,500,000 13,200,000 13,200,000 14,000,000 14,400,000 13,600,000 12,400,000 12,600,000 13,800,000 20,700,000 14,300,000 13,800,000 12,800,000 12,700,000 12,000,000 13,000,000 9,000,000 9,600,000 9,300,000 9,800,000 6,700,000 8,300,000 8,600,000 11,284,000 
          amortization of purchased intangibles
        55,900,000 56,200,000 56,100,000 55,200,000 55,300,000 55,700,000 55,500,000 55,200,000 55,600,000 57,200,000 57,000,000 56,800,000 56,700,000 55,500,000 57,100,000 58,400,000 58,600,000 59,000,000 59,400,000 60,600,000 79,000,000 78,300,000 76,600,000 77,300,000 78,100,000 79,800,000 76,100,000 80,700,000 59,000,000 23,700,000 23,600,000 23,700,000 23,700,000 23,800,000 24,000,000 24,000,000 24,100,000 24,000,000 24,000,000 24,000,000 24,600,000 24,900,000 25,000,000 24,900,000 24,900,000 25,300,000 25,200,000 25,200,000 25,600,000 25,600,000 25,900,000 25,900,000 25,900,000 26,200,000 31,300,000 32,800,000 32,800,000 33,000,000 33,000,000 33,200,000 32,600,000 32,400,000 32,300,000 30,800,000 30,600,000 30,700,000 30,500,000 33,300,000 35,524,000 
          depreciation and amortization
        26,500,000 26,400,000 27,300,000 27,300,000 28,100,000 28,200,000 28,700,000 30,100,000 30,700,000 31,100,000 32,300,000 31,900,000 33,900,000 34,500,000 33,000,000 33,500,000 35,900,000 37,200,000 37,100,000 37,600,000 41,500,000 39,700,000 36,700,000 35,300,000 38,000,000 41,400,000 46,300,000 32,900,000 32,900,000 30,200,000 27,500,000 28,100,000 27,900,000 26,900,000 28,800,000 29,400,000 33,700,000 31,200,000 30,400,000 33,900,000 31,700,000 32,400,000 33,300,000 31,800,000 31,500,000 32,700,000 34,300,000 34,100,000 34,300,000 35,000,000 33,200,000 32,600,000 33,900,000 34,500,000 33,600,000 34,900,000 33,400,000 32,400,000 31,700,000 31,000,000 31,800,000 33,100,000 32,800,000 32,200,000 32,900,000 32,300,000 30,100,000 31,000,000 34,472,000 
          net realized and unrealized gains on investments
                                                                             
          deferred income taxes
        21,300,000 -6,700,000 -13,300,000 -7,400,000 -44,500,000 -7,400,000 -7,100,000 -7,400,000 -49,200,000 -8,600,000 -8,500,000 -8,700,000 -1,100,000 -10,100,000 -6,900,000 -5,100,000 21,000,000 -5,400,000 27,000,000 -7,800,000 -23,000,000 3,500,000 -12,400,000 -9,700,000 20,000,000 -10,600,000 -12,500,000 -600,000 89,700,000 19,600,000 16,700,000 -11,700,000 -2,575,300,000 117,900,000 9,600,000 2,200,000 -3,700,000 -101,300,000 22,400,000 -400,000 13,500,000 8,500,000 40,800,000 500,000 15,800,000 45,600,000 -8,300,000 25,800,000 -51,100,000 55,900,000 -3,500,000 -7,300,000 14,600,000 22,600,000 64,200,000 -19,200,000 -527,900,000 20,900,000 400,000 -152,100,000 53,600,000 -13,500,000 -10,600,000 -7,200,000 -28,000,000 -15,900,000 -3,500,000 -9,500,000 -82,932,000 
          change in:
                                                                             
          accounts receivable
        2,800,000 25,500,000 101,400,000 -196,800,000 55,800,000 -29,700,000 27,900,000 -93,400,000 23,400,000 40,800,000 125,500,000 -241,200,000 96,300,000 600,000 26,000,000 -174,000,000 36,100,000 50,700,000 13,700,000 -146,200,000 29,000,000 41,700,000 267,000,000 -309,500,000 53,400,000 47,800,000 -34,900,000 -5,500,000 -37,600,000 47,100,000 10,000,000 -85,000,000 29,800,000 26,800,000 10,900,000 -61,500,000 10,600,000 52,400,000 -37,800,000 -33,300,000 5,000,000 36,100,000 -16,600,000 -41,800,000 3,400,000 -10,000,000 10,000,000 -41,900,000 9,500,000 47,100,000 -50,000,000 -42,100,000 32,100,000 41,200,000 -3,300,000 -70,300,000 59,300,000 15,500,000 8,400,000 -96,400,000 35,200,000 1,100,000 -16,700,000 -48,300,000 15,800,000 18,100,000 -3,200,000 -45,100,000 107,192,000 
          other current assets
        3,800,000 2,700,000   66,100,000 -41,400,000 176,100,000 464,000,000 -534,900,000 -88,300,000 -69,300,000 54,700,000 -47,000,000 -10,500,000 50,700,000 -69,700,000 -14,400,000 -18,700,000 8,200,000 -30,500,000 68,100,000 -39,500,000 16,300,000 -14,500,000 216,700,000 -232,600,000 80,700,000 45,400,000 -120,100,000 -1,300,000 49,400,000 -12,900,000 31,500,000 -25,000,000 6,700,000 -9,300,000 15,700,000 -18,500,000 6,100,000 -100,000 -25,100,000 4,300,000 3,200,000 4,900,000 13,100,000 -5,400,000 -9,900,000 5,900,000 -9,500,000 -21,700,000 4,600,000 24,000,000 17,900,000 -40,400,000 2,600,000 1,700,000 -54,300,000 13,400,000 -27,500,000 -1,000,000 -44,900,000 -1,800,000 23,400,000 -6,600,000 1,000,000 1,200,000 -25,500,000 15,900,000 -53,718,000 
          other assets
        -31,500,000 51,600,000 13,300,000 16,500,000 37,300,000 18,800,000 19,500,000 -200,000 33,400,000 7,800,000 31,400,000 19,400,000 10,300,000 24,600,000 33,100,000 19,000,000 19,700,000 10,500,000 18,800,000 12,300,000 26,500,000 17,300,000 9,000,000 18,800,000 39,700,000 2,900,000 -3,600,000 -9,800,000 21,900,000 8,600,000 3,000,000 -3,800,000 -77,300,000 10,900,000 41,600,000 7,000,000 -4,100,000 29,800,000 -14,400,000 -5,900,000 14,400,000 -3,300,000 -3,900,000 -11,200,000 -600,000 -14,700,000 -12,400,000 16,200,000 -29,300,000 -14,700,000 19,200,000 25,400,000 -31,500,000 -16,900,000 -7,000,000 4,700,000 -16,200,000 9,600,000 -1,000,000 -19,500,000 -10,900,000 18,700,000 -1,100,000 -12,800,000 700,000 4,400,000 -8,300,000 -3,700,000 -31,885,000 
          accounts payable
        -3,100,000 -17,500,000 -7,800,000 20,300,000 -50,000,000 30,000,000 -11,200,000 20,500,000 36,700,000 2,900,000 -46,200,000 -24,200,000 26,300,000 14,200,000 32,000,000 -22,200,000 24,600,000 -12,300,000 -8,700,000 -30,200,000 11,500,000 13,700,000 12,400,000 300,000 9,900,000 -13,700,000 -50,600,000 9,800,000 26,000,000 2,900,000 -6,400,000 -4,900,000 10,700,000 -12,900,000 12,200,000 -8,300,000 -1,100,000 3,300,000 3,500,000 -9,500,000 16,100,000 -11,800,000 -3,000,000 1,900,000 2,900,000 -11,000,000 6,900,000 -4,800,000 4,000,000 5,700,000 -10,400,000 -2,800,000 5,500,000 10,600,000 -2,100,000 -9,700,000 1,100,000 -18,700,000 6,300,000 8,100,000 6,200,000 2,200,000 -10,400,000 10,600,000 -2,400,000 -8,000,000 -24,500,000 17,882,000 
          income taxes payable
        63,500,000 -700,000 -252,600,000 280,900,000 10,600,000 -21,800,000 -257,600,000 151,400,000 9,400,000 -36,500,000 -332,500,000 282,500,000 20,000,000 -115,600,000 -218,100,000 165,900,000 -32,200,000 -4,600,000 -199,400,000 115,700,000 31,700,000 -321,000,000 107,900,000 186,100,000 65,900,000 -65,900,000 -169,900,000 141,300,000 34,400,000 -10,000,000 -93,800,000 264,800,000 89,700,000 12,400,000 -266,700,000 168,100,000 39,200,000 34,100,000 -191,300,000 178,500,000 -12,000,000 -14,600,000 -204,600,000 149,100,000 35,800,000 -113,900,000 -160,100,000 132,600,000 76,600,000 -121,600,000 -113,300,000 149,000,000 48,600,000 -23,200,000 -128,400,000 174,900,000      -20,300,000        
          other current liabilities
        95,900,000 -77,200,000 125,000,000 -57,100,000 -14,500,000 27,000,000 -113,100,000 -605,300,000 586,200,000 79,200,000 84,000,000 -106,700,000 87,700,000 -5,200,000 -700,000 6,300,000 41,900,000 -4,500,000 56,800,000 -32,300,000 -14,700,000 16,300,000 -33,800,000 -22,100,000 -191,200,000 269,600,000 -104,600,000 -73,100,000 1,000,000 -11,400,000 -26,700,000 300,000 14,400,000 2,200,000 42,300,000 -67,800,000 28,100,000 -26,000,000 46,800,000 -88,100,000 10,200,000 -5,100,000 59,200,000 -85,400,000 16,500,000 -7,400,000 40,200,000 -95,400,000 51,200,000 -116,900,000 144,100,000 -35,900,000 36,100,000 -41,300,000 44,800,000 -45,200,000 49,000,000 -31,400,000 46,900,000 -71,000,000 65,100,000 -17,700,000 60,000,000 -27,800,000 32,900,000 -12,000,000 5,900,000 -50,100,000 -9,761,000 
          other liabilities
        -27,000,000 1,600,000 -6,400,000 -2,800,000 -38,400,000 -1,800,000 -13,400,000 -1,800,000 1,800,000 -16,100,000 -11,200,000 -7,200,000 -6,600,000 -21,800,000 -24,300,000 -14,700,000 -17,900,000 -9,600,000 -8,700,000 -8,600,000 -2,600,000 22,900,000 -19,600,000 -29,500,000 -53,800,000 -7,500,000 8,200,000 300,000 -10,300,000 -4,300,000 -5,600,000 -300,000 -11,400,000 300,000 2,600,000 -8,200,000 -9,000,000 2,200,000 -7,500,000 -9,300,000 -400,000 1,800,000 -1,900,000 8,400,000 -10,300,000 -4,500,000 3,600,000 -9,800,000 4,200,000   -22,300,000 7,400,000 2,300,000 2,300,000 -1,500,000 7,900,000 4,400,000 2,400,000 -16,400,000 14,500,000 -600,000 7,800,000 1,100,000 7,600,000 20,400,000 1,600,000 1,435,000 
          other
        63,800,000   5,700,000 2,300,000 12,300,000 -21,200,000 3,600,000 12,600,000 16,200,000 -10,300,000 15,900,000 42,300,000 -10,200,000 1,100,000 8,100,000 1,100,000 1,100,000 300,000 1,900,000 2,000,000 1,200,000 1,300,000 4,100,000 2,600,000 700,000 9,800,000 -1,200,000 9,300,000 800,000 400,000 800,000 1,600,000 -600,000 -500,000 100,000 1,000,000 -5,900,000   1,300,000 600,000 1,100,000 2,600,000 800,000 4,900,000 -600,000 1,200,000 -1,100,000 2,600,000 2,100,000 2,500,000 -800,000 1,000,000 -300,000 -300,000 -900,000 900,000 -200,000 -100,000 900,000 2,600,000 -700,000 -1,000,000      
          net cash from operating activities
        1,133,900,000 968,100,000 1,058,500,000 1,116,600,000 1,017,900,000 1,003,000,000 776,900,000 892,700,000 1,044,300,000 856,700,000 650,400,000 902,400,000 981,500,000 657,800,000 617,600,000 799,100,000 668,300,000 631,600,000 499,800,000 602,700,000 660,300,000 311,400,000 986,800,000 757,100,000 719,700,000 810,200,000 473,700,000 669,200,000 510,400,000 582,600,000 522,800,000 825,000,000 510,200,000 507,200,000 304,300,000 518,700,000 510,400,000 462,400,000 223,500,000 519,700,000 374,100,000 463,500,000 258,800,000 418,900,000 502,500,000 234,200,000 171,700,000 383,000,000 381,900,000 129,800,000 372,800,000 396,000,000 319,600,000 239,400,000 262,200,000 395,600,000 346,500,000 423,700,000 214,000,000 362,100,000 393,400,000 313,900,000 293,400,000 355,700,000 345,300,000 299,400,000 183,700,000 254,700,000 334,485,000 
          capital expenditures
        -32,500,000 -18,400,000 -18,400,000 -14,200,000 -26,200,000 -29,800,000 -18,200,000 -19,800,000 -20,800,000 -19,900,000 -20,500,000 -15,200,000 -24,400,000 -24,000,000 -17,900,000 -23,400,000 -27,300,000 -31,700,000 -39,700,000 -28,500,000 -70,000,000 -48,300,000 -36,400,000 -42,800,000 -66,400,000 -57,600,000 -72,500,000 -49,100,000 -55,800,000 -31,300,000 -11,400,000 -18,200,000 -28,900,000 -15,400,000 -17,600,000 -20,000,000 -28,900,000 -23,300,000 -19,400,000 -20,200,000 -23,900,000 -29,600,000 -29,300,000 -31,400,000 -36,500,000 -26,800,000 -40,900,000 -36,500,000 -30,900,000 -38,900,000 -35,600,000 -20,200,000 -37,900,000 -40,300,000 -36,900,000 -26,700,000 -42,800,000 -41,000,000 -47,000,000 -41,400,000 -62,300,000 -43,900,000 -27,500,000 -26,300,000 -45,000,000 -33,900,000 -43,700,000 -35,300,000 -80,704,000 
          free cash flows
        1,101,400,000 949,700,000 1,040,100,000 1,102,400,000 991,700,000 973,200,000 758,700,000 872,900,000 1,023,500,000 836,800,000 629,900,000 887,200,000 957,100,000 633,800,000 599,700,000 775,700,000 641,000,000 599,900,000 460,100,000 574,200,000 590,300,000 263,100,000 950,400,000 714,300,000 653,300,000 752,600,000 401,200,000 620,100,000 454,600,000 551,300,000 511,400,000 806,800,000 481,300,000 491,800,000 286,700,000 498,700,000 481,500,000 439,100,000 204,100,000 499,500,000 350,200,000 433,900,000 229,500,000 387,500,000 466,000,000 207,400,000 130,800,000 346,500,000 351,000,000 90,900,000 337,200,000 375,800,000 281,700,000 199,100,000 225,300,000 368,900,000 303,700,000 382,700,000 167,000,000 320,700,000 331,100,000 270,000,000 265,900,000 329,400,000 300,300,000 265,500,000 140,000,000 219,400,000 253,781,000 
          cash flows from investing activities
                                                                             
          proceeds from maturities and sales of available-for-sale marketable securities
                                                                             
          purchases of available-for-sale marketable securities
        -1,100,000 -1,100,000 -800,000 -3,000,000 -200,000 -1,300,000 -1,800,000 -1,200,000 -1,100,000 -400,000 -2,300,000 -300,000 -700,000 -800,000 -700,000 -2,200,000 -1,600,000 -1,300,000 -3,400,000 -1,500,000 -2,400,000 -2,000,000 -4,300,000 -2,400,000 -5,600,000 -1,500,000 -2,700,000 -5,600,000 -5,000,000 -3,100,000 -1,100,000 -800,000 -700,000 -1,800,000   -1,000,000 -4,600,000 -4,400,000 -35,900,000 -6,000,000 -10,100,000 -9,000,000 -10,200,000 -9,000,000 -10,200,000 -9,000,000 -10,100,000 -9,000,000 -9,300,000 -9,000,000 -9,300,000 -9,000,000    -5,100,000 -5,100,000 -5,100,000 -5,100,000 -5,100,000 -50,000,000 -104,800,000  
          purchases of property
        -32,500,000 -18,400,000 -18,400,000 -14,200,000 -26,200,000 -29,800,000 -18,200,000 -19,800,000 -20,800,000 -19,900,000 -20,500,000 -15,200,000 -24,400,000 -24,000,000 -17,900,000 -23,400,000 -27,300,000 -31,700,000 -39,700,000 -28,500,000 -70,000,000 -48,300,000 -36,400,000 -42,800,000 -66,400,000 -57,600,000 -72,500,000 -49,100,000 -55,800,000 -31,300,000 -11,400,000 -18,200,000 -28,900,000 -15,400,000 -17,600,000 -20,000,000 -28,900,000 -23,300,000 -19,400,000 -20,200,000 -23,900,000 -29,600,000 -29,300,000 -31,400,000 -36,500,000 -26,800,000 -40,900,000 -36,500,000 -30,900,000 -38,900,000 -35,600,000 -20,200,000 -37,900,000 -40,300,000 -36,900,000 -26,700,000 -42,800,000 -41,000,000 -47,000,000 -41,400,000 -62,300,000 -43,900,000 -27,500,000 -26,300,000 -45,000,000 -33,900,000 -43,700,000 -35,300,000 -80,704,000 
          investments in business ventures
                                        -3,000,000 -2,000,000 -300,000 -4,200,000 -1,100,000 -800,000 -3,000,000 -9,700,000 -2,000,000   -48,800,000        39,300,000                 
          proceeds from sale of business ventures
                                                                             
          net cash from investing activities
        1,551,900,000 -19,100,000 -18,000,000 -16,000,000 -25,300,000 -29,500,000 -5,000,000 -22,800,000 -20,400,000 -19,500,000 78,000,000 -17,200,000 -25,700,000 -23,600,000 -417,600,000 -22,900,000 67,600,000 58,800,000 -34,000,000 -34,000,000 -52,100,000 -43,900,000 -36,500,000 -43,000,000 -15,900,000 -46,800,000 -41,300,000 -48,600,000 -1,850,700,000 -31,200,000 9,700,000 -17,400,000 -20,900,000 -4,000,000 -19,400,000 224,200,000 117,500,000 -16,500,000 -20,000,000 -27,300,000 39,200,000 -20,200,000 23,300,000 -24,400,000 -91,500,000 -37,300,000 -40,900,000 -29,400,000 157,500,000 89,600,000 -35,600,000 -21,000,000 -156,400,000 -121,400,000 112,200,000 -40,400,000 -42,600,000 -40,800,000 -28,600,000 -41,600,000 -39,700,000 -61,000,000 12,100,000 -19,800,000 5,400,000 -18,500,000 256,900,000 301,000,000 -303,638,000 
          cash flows from financing activities
                                                                             
          proceeds from debt, net of issuance costs
        -1,700,000 742,300,000         -1,700,000 742,700,000              -1,900,000            743,700,000                          
          repayment of other borrowings, including call premiums
                                                                             
          cash dividends
        -455,000,000 -455,300,000 -455,300,000 -2,567,400,000 -418,800,000 -418,500,000 -418,500,000 -2,328,400,000 -400,100,000 -400,000,000 -399,800,000 -2,035,600,000 -363,500,000 -363,200,000 -363,300,000 -1,543,500,000 -326,800,000 -322,500,000 -322,500,000 -1,217,500,000 -304,300,000 -304,100,000 -304,000,000 -1,197,600,000 -268,100,000 -267,900,000 -267,800,000 -892,100,000 -249,800,000 -237,600,000 -237,700,000 -1,424,800,000 -223,900,000 -223,500,000 -223,500,000 -1,322,600,000 -202,900,000 -202,600,000 -202,400,000 -1,179,300,000 -168,500,000 -168,200,000 -167,900,000 -838,800,000 -157,600,000 -157,100,000 -157,100,000 -1,025,000,000 -149,500,000 -149,800,000 -150,400,000 -149,400,000 -580,000,000 -150,100,000 -147,700,000 -346,500,000 -92,200,000 -93,100,000 -93,900,000 -93,600,000 -77,000,000 -76,800,000 -75,600,000 -75,900,000 -76,600,000 -76,400,000 -76,300,000 -76,300,000 -412,454,000 
          repurchase of class a common stock, including costs
        -257,900,000                                                       -155,100,000   -100,000 -279,000,000 -14,400,000 -281,800,000  -27,000,000  
          change in performance bond and guaranty fund contributions
        10,614,900,000 6,883,200,000 21,463,400,000 21,799,100,000 -561,600,000 13,787,000,000 -8,803,900,000 4,281,400,000 3,000,400,000 -26,049,400,000 -14,849,200,000 -7,158,500,000 -4,725,600,000 1,544,500,000 -29,306,300,000 9,787,100,000                                                      
          employee taxes paid on restricted stock vesting
        -2,900,000 -22,200,000 -600,000 -8,200,000 -3,500,000 -17,100,000 -100,000 -12,300,000 -2,900,000 -17,400,000 -800,000 -300,000 -3,100,000 -16,400,000 -1,000,000 -4,300,000 -500,000 -17,700,000 -400,000 -13,100,000 -4,300,000 -17,700,000 -300,000 -19,100,000 -22,700,000 -300,000 -13,800,000 -100,000 -20,000,000 -200,000 -14,700,000 -800,000 -18,400,000 -500,000 -11,600,000                                  
          net cash from financing activities
        9,899,200,000 6,399,700,000 20,999,200,000 19,211,400,000 -984,100,000 13,347,000,000 -9,222,800,000 1,936,400,000 2,588,500,000 -26,466,800,000 -15,262,500,000 -9,198,500,000 -5,091,200,000 1,160,600,000 -29,672,700,000 8,221,600,000 71,805,100,000 -342,100,000 -321,100,000 -1,233,200,000 -307,000,000 -340,700,000 -396,600,000 -1,413,900,000 -363,300,000 -490,200,000 -489,600,000 -997,700,000 -312,200,000 -257,500,000 925,000,000 -1,435,300,000 -216,800,000 -234,400,000 -210,400,000 -1,323,700,000 -179,800,000 -186,500,000 -188,400,000 -1,039,000,000 -155,000,000 -160,000,000 -825,900,000 -65,800,000 -132,800,000 -146,300,000 -147,200,000 -1,769,600,000 -134,700,000 -122,400,000 -212,600,000 -136,300,000 -575,400,000 605,700,000 -142,900,000 -335,800,000 -90,900,000 -247,200,000 -156,500,000 -511,000,000 -66,700,000 -48,300,000 -386,100,000 -152,300,000 -294,200,000 -525,500,000 -331,100,000 -514,400,000 -315,373,000 
          net change in cash, cash equivalents, restricted cash and restricted cash equivalents
        12,585,000,000 7,348,700,000 22,039,700,000 20,312,000,000 8,500,000 14,320,500,000 -8,450,900,000 2,806,300,000 3,612,400,000 -25,629,600,000 -14,534,100,000 -8,313,300,000 -4,135,400,000 1,794,800,000 -29,472,700,000 8,997,800,000                                                      
          cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period
        101,794,100,000 93,109,700,000 -100,000 100,000 137,974,300,000 -100,000 160,789,900,000                                                      
          cash, cash equivalents, restricted cash and restricted cash equivalents, end of period
        12,585,000,000 7,348,700,000 22,039,700,000 122,106,100,000 8,500,000 14,320,500,000 -8,450,900,000 95,916,000,000 3,612,300,000 -25,629,500,000 -14,534,100,000 129,661,000,000 -4,135,500,000 1,794,800,000 -29,472,700,000 169,787,700,000                                                      
          reconciliation of cash, cash equivalents, restricted cash and restricted cash equivalents:
                                                                             
          cash and cash equivalents
        1,970,100,000 465,500,000 576,000,000 1,405,300,000 570,300,000 532,200,000 353,000,000 1,436,900,000 611,800,000 420,100,000 314,900,000 1,565,200,000 590,000,000 250,600,000 -166,200,000 2,045,700,000 1,375,500,000 378,400,000 144,600,000 936,400,000 301,100,000 -73,300,000 553,700,000 851,700,000 341,300,000 272,400,000 -59,700,000 997,400,000 -31,800,000 307,400,000 314,300,000 784,600,000                                      
          short-term restricted cash
        200,000 6,300,000 -200,000 1,300,000 5,200,000 100,000 -100,000 100,000 5,100,000 300,000 -100,000 -100,000 4,800,000 300,000 4,500,000 200,000 100,000 100,000 4,300,000 -800,000 1,000,000 2,500,000 1,600,000 -1,620,600,000 -13,400,000 1,143,200,000 492,300,000                                      
          restricted cash and restricted cash equivalents
        10,614,900,000 6,883,200,000 21,463,500,000 120,694,500,000 -561,600,000 13,787,000,000 -8,803,900,000 94,473,900,000 3,000,400,000 -26,049,500,000 -14,849,100,000 128,090,700,000 -4,725,700,000 1,544,500,000 -29,306,300,000 167,736,700,000                                                      
          total
        12,585,000,000 7,348,700,000 22,039,700,000 122,106,100,000 8,500,000 14,320,500,000 -8,450,900,000 95,916,000,000 3,612,300,000 -25,629,500,000 -14,534,100,000 129,661,000,000 -4,135,500,000 1,794,800,000 -29,472,700,000 169,787,700,000 159,322,800,000 348,300,000 144,700,000 974,000,000 301,200,000 -73,200,000 553,700,000 856,800,000 340,500,000 273,200,000 -57,200,000 1,000,100,000 -1,652,500,000 293,900,000 1,457,500,000 1,278,300,000                                      
          supplemental disclosure of cash flow information
                                                                             
          income taxes paid, net of refunds
                                                                             
          interest paid
        23,900,000 46,700,000 23,900,000 41,100,000 23,900,000 41,000,000 23,900,000 41,100,000 23,900,000 41,000,000 23,900,000 41,100,000 24,500,000 41,400,000 23,900,000 43,400,000 23,900,000 42,300,000 24,700,000 42,400,000 23,900,000 42,400,000 24,600,000 42,400,000 23,900,000 42,300,000 24,700,000 55,400,000 23,500,000 42,400,000 42,400,000 42,400,000 42,400,000 42,400,000 42,400,000 42,800,000 1,700,000 44,600,000 44,600,000 66,800,000 66,500,000 66,900,000 55,300,000 55,300,000 55,300,000 56,600,000 1,600,000 57,200,000   2,600,000 47,200,000 5,000,000 36,000,000 6,424,000 
          non-cash financing activities:
                                                                             
          declaration of annual variable dividend, paid january 2025 and january 2024
                                                                             
          net realized and unrealized losses on investments
         -400,000 -2,600,000 8,100,000 -9,200,000 -2,500,000 -300,000 1,900,000 1,100,000 -74,800,000 -700,000 -1,100,000 500,000 -3,500,000 -5,000,000 -91,300,000   600,000 3,800,000 4,000,000 -2,900,000                                              
          proceeds from maturities of available-for-sale marketable securities
         1,400,000 1,200,000 3,600,000  1,600,000 1,600,000 1,700,000  800,000 2,900,000 700,000  1,200,000 1,200,000 2,700,000  1,700,000 3,500,000 2,200,000  1,900,000 5,300,000 2,200,000  1,400,000 5,500,000 6,100,000  3,200,000 1,800,000 1,600,000  1,100,000 700,000 500,000  3,700,000 4,600,000 31,800,000  10,200,000 8,900,000 10,200,000  10,200,000 9,000,000 9,300,000   9,000,000 8,500,000  6,100,000 200,000 9,100,000 5,300,000 200,000 300,000 5,500,000 400,000 5,400,000 600,000 5,500,000 50,700,000 20,400,000 200,000,000 168,700,000  
          investments in privately-held equity investments
         -1,000,000 -2,400,000  -100,000 -3,500,000  -2,400,000        -4,100,000                                                
          proceeds from sales of investments
                      85,900,000    8,600,000                                                
          repayment of debt
         -750,000,000                      -569,200,000                 -750,000,000                      
          income taxes paid
         275,600,000 566,900,000 12,700,000 259,000,000 288,900,000 534,900,000 114,800,000 226,100,000 271,600,000 580,800,000 30,900,000 169,400,000 324,600,000 434,800,000 44,600,000 142,500,000 178,800,000 367,900,000 65,800,000 99,500,000 436,600,000 77,600,000 39,000,000 40,600,000 176,700,000   166,800,000 137,800,000 264,000,000 8,800,000 120,100,000 166,500,000 466,100,000 10,100,000 161,200,000 135,200,000 382,200,000 28,100,000 168,100,000 155,200,000 349,400,000 43,900,000 117,600,000 201,900,000 306,200,000 15,800,000 77,600,000 222,500,000 305,700,000 6,400,000 107,300,000 188,000,000 325,300,000 3,800,000 204,000,000 201,000,000 404,100,000 7,000,000 193,300,000 220,700,000   160,100,000 140,000,000 281,500,000 48,100,000  
          investment in s&p dow jones indices llc
                                                                             
          long-term restricted cash
                    -100,000 -200,000 -100,000 500,000 -2,300,000 -100,000 -200,000 3,100,000 -100,000 -100,000 800,000 -200,000 1,100,000 -100,000 -100,000 1,400,000                                      
          declaration of annual variable dividend, payable in january 2025, january 2024 and january 2023
                                                                             
          repayment of debt, including call premium
                    -100,000 -756,100,000                                                      
          non-cash investing activities:
                                                                             
          accrued proceeds from sale of investments
                   97,900,000                                                          
          gain on sale of building
                                                                             
          gain on joint venture
                                                                             
          payment for acquisition of subsidiary's interests from the non-controlling interest
                                                                             
          proceeds from the sale of building property
                                                                             
          net cash proceeds from osttra joint venture transaction
                        57,000,000                                                     
          proceeds from preferred stock offering
                                                                             
          declaration of annual variable dividend, payable in january 2024, january 2023 and january 2022
                                                                             
          investment in s&p/dow jones indices llc
                                                           923,400,000                
          net losses on assets held for sale and impaired
                                                                            
          loss on derivative contracts
                                                                             
          repayment issuance of commercial paper
                                                                             
          declaration of annual variable dividend, payable in january 2023, january 2022 and january 2021
                                                                             
          gain on deconsolidation of optimization business
                                                                             
          purchase of non-controlling interest
                         -39,500,000 -6,300,000 -6,200,000                                                  
          cash dividends in excess of earnings (undistributed net earnings) of unconsolidated subsidiaries
                          -11,200,000 13,100,000                                                  
          cash classified as assets held for sale
                          30,000,000                                                  
          cash dividends in excess of earnings of unconsolidated subsidiaries
                       11,900,000                                                      
          undistributed earnings, net of losses, of unconsolidated subsidiaries
                                   -22,600,000 -2,500,000 -1,100,000 -15,600,000 10,900,000 6,400,000 -20,800,000 -8,100,000 -4,300,000 27,000,000 -26,000,000 -7,500,000 4,200,000 10,100,000 -9,900,000 -8,600,000 3,300,000                          
          repayment of other borrowings
                                                               -420,500,000       
          proceeds from settlement of derivative contract
                                                                             
          declaration of annual variable dividend, payable in january 2021, january 2020 and january 2019
                                                                             
          net losses on impaired assets
                             -500,000 4,800,000 23,100,000                                              
          net (gain) on derivative contracts
                                                                             
          undistributed net earnings of unconsolidated subsidiaries
                             800,000 -10,300,000 -200,000  -9,900,000                                            
          repayment of commercial paper
                                                                             
          net change in cash, cash equivalents and restricted cash
                         348,300,000 144,700,000 -664,500,000 301,200,000 -73,200,000 553,700,000 -699,800,000 340,500,000 273,200,000 -57,200,000 -377,100,000 -1,652,500,000 293,900,000 1,457,500,000 -627,700,000                                      
          cash, cash equivalents and restricted cash, beginning of period
                         1,638,500,000 1,556,600,000 1,377,200,000 1,906,000,000                                      
          cash, cash equivalents and restricted cash, end of period
                         348,300,000 144,700,000 974,000,000 301,200,000 -73,200,000 553,700,000 856,800,000 340,500,000 273,200,000 -57,200,000 1,000,100,000 -1,652,500,000 293,900,000 1,457,500,000 1,278,300,000                                      
          reconciliation of cash, cash equivalents and restricted cash:
                                                                             
          net loss on derivative contracts
                             100,000 -100,000 -1,500,000    14,400,000                                          
          net realized and unrealized (gains) on investments
                           -800,000                                                  
          cash paid to acquire nex, net of cash received
                                                                             
          (repayment) issuance of commercial paper
                                                                             
          proceeds from other borrowings, net of issuance costs
                                                                  -400,000 608,400,000 -300,000 -900,000 744,700,000 -1,947,000 
          proceeds from settlement of (premium payment for) derivative contract
                                                                             
          common stock issued for the acquisition of nex
                                                                             
          issuance of commercial paper, net of maturities
                             -100,000,000 -204,600,000 -131,400,000 -200,600,000 -222,800,000 462,300,000                                          
          settlement of derivative contracts
                                 16,000,000                                          
          income tax expense reclassified from accumulated other comprehensive income upon final sale of bm&fbovespa shares
                                        87,800,000                                  
          declaration of annual variable dividend, payable in january 2020, january 2019 and january 2018
                                                                             
          unrealized loss on derivative contracts
                                 1,200,000                                            
          premium payment for derivative contract
                                                                           
          unrealized loss on assets held for sale
                                                                             
          net realized and unrealized losses on privately-held equity investments
                                                                             
          proceeds from sales of privately-held equity investments
                                                                            
          net realized and unrealized gains on privately-held equity investments
                                   3,400,000 -11,500,000                                         
          loss on datacenter
                                            27,100,000                              
          gain on sale of bm&fbovespa shares
                                         -86,500,000      2,500,000                            
          gain on sale of bolsa mexicana de valores, s.a.b de c.v.
                                        -300,000                                     
          proceeds from sale of bm&fbovespa shares
                                        244,000,000     69,800,000 11,300,000                            
          proceeds from sale of bolsa mexicana de valores, s.a.b de c.v.
                                        4,500,000                                     
          proceeds from exercise of stock options
                                    1,400,000 1,900,000 4,000,000 4,200,000 6,300,000 7,500,000 12,400,000 10,500,000 22,300,000 9,500,000 13,600,000 6,400,000 12,200,000 9,700,000 13,500,000 28,600,000 26,700,000 15,100,000 7,000,000 4,500,000 20,100,000 25,500,000 15,300,000 12,800,000 2,900,000 7,700,000 3,600,000 7,900,000 600,000 700,000 1,300,000 3,200,000 6,100,000 1,600,000 2,800,000 2,100,000 5,200,000 1,500,000 11,300,000 2,400,000 9,115,000 
          proceeds from lease financing obligation
                                                                             
          excess tax benefits related to employee option exercises and restricted stock vesting
                                            -500,000 6,600,000 -500,000 3,900,000 400,000 5,400,000 600,000 700,000 700,000 400,000 2,000,000 900,000 1,400,000 3,300,000 1,800,000 300,000 900,000 300,000 600,000 2,800,000 -100,000 200,000   2,200,000 500,000 700,000 2,400,000     3,592,000 
          declaration of annual variable dividend, payable in january 2019, january 2018 and january 2017
                                                                             
          intangible and fixed asset impairments
                                                                             
          unrealized losses on derivative contracts
                                     14,500,000                                        
          gain on sale of bolsa mexicana de valores, s.a.b de c.v. shares
                                                                             
          realized and unrealized gains on privately-held equity investments
                                                                             
          loss on sale of bm&fbovespa shares
                                                                             
          debt prepayment costs
                                                                           
          settlement of derivative related to debt issuance
                                                7,000,000                        
          proceeds from finance lease obligation
                                            130,000,000                              
          settlement of contingent consideration
                                                                            
          net change in cash and cash equivalents
                                        272,500,000 268,800,000 74,500,000 -580,800,000 448,100,000 259,400,000 15,100,000 -546,600,000 258,300,000 283,300,000 -543,800,000 328,700,000 278,200,000 50,600,000 -16,400,000 -1,416,000,000 404,700,000 97,000,000 124,600,000 238,700,000 -412,200,000 723,700,000 231,500,000 19,400,000 213,000,000 135,700,000 28,900,000 -190,500,000 287,000,000 204,600,000 -80,600,000 183,600,000 56,500,000 -244,600,000 109,500,000 41,300,000 -284,526,000 
          cash and cash equivalents, beginning of period
                                        1,868,600,000 1,692,600,000 1,366,100,000 2,469,700,000 1,604,700,000 1,042,300,000 855,200,000 260,600,000 297,900,000 
          cash and cash equivalents, end of period
                                        272,500,000 268,800,000 74,500,000 1,287,800,000 448,100,000 259,400,000 15,100,000 1,146,000,000 258,300,000 283,300,000 -543,800,000 1,694,800,000 278,200,000 50,600,000 -16,400,000 1,053,700,000 404,700,000 97,000,000 124,600,000 1,843,400,000 -412,200,000 723,700,000 231,500,000 1,061,700,000 213,000,000 135,700,000 28,900,000 664,700,000 287,000,000 204,600,000 -80,600,000 444,200,000 56,500,000 -244,600,000 109,500,000 339,200,000 -284,526,000 
          declaration of annual variable dividend, payable in january 2018, january 2017 and january 2016
                                                                             
          proceeds from sale of business venture
                                                                             
          proceeds from sale of building properties
                                                                             
          declaration of annual variable dividend, payable in january 2017, january 2016 and january 2015
                                                                             
          accrued proceeds from sale of bm&fbovespa shares
                                                                             
          loss on sale of nymex building property
                                                                             
          declaration of annual variable dividend, payable in january 2016, january 2015 and january 2014
                                                                             
          proceeds from sale of building property
                                                     7,900,000                    
          gain on contribution of dow jones index asset group
                                                            1,000,000 4,700,000                
          loss on sale of credit market analysis ltd.
                                                            600,000                
          proceeds from sale of building properties, net of transaction costs
                                                                             
          cash paid in business combinations, net of cash acquired
                                                                             
          issuance of loan to unconsolidated subsidiary
                                                                             
          proceeds from sale of credit market analysis ltd., net of cash sold with business
                                                                           
          declaration of annual variable dividend, payable in january 2015 and january 2014
                                                                             
          undistributed net losses of unconsolidated subsidiaries
                                                     -20,000,000 -8,200,000 -11,000,000                      
          purchase of noncontrolling interest
                                                                             
          purchase of non-controlling interest in cme group index holdings llc
                                                                            
          accrued purchase of non-controlling interest
                                                                             
          mf global accounts receivable write-off
                                                                             
          gain on sale of index services assets
                                                                           
          proceeds from sale of index services assets
                                                                           
          declaration of annual variable dividend, payable in january 2014
                                                                             
          gain on contribution of dow jones index business
                                                                             
          equity in net losses of unconsolidated subsidiaries
                                                         -20,400,000 -20,200,000 -17,500,000 -15,900,000 -16,500,000 900,000 800,000 1,200,000 900,000 1,100,000 1,100,000          
          proceeds from maturities and sale of available-for-sale marketable securities
                                                                             
          investment in business ventures
                                                                             
          gain on contribution of dow jones index index business
                                                                             
          net loss on derivative investments
                                                                            390,000 
          impairment of goodwill and intangible assets
                                                                            
          impairment of long-term investments
                                                                             
          amortization of debt financing costs and discount accretion
                                                            2,000,000 1,300,000                
          proceeds from sale of long-term investments
                                                                             
          proceeds from chicago board options exchange exercise right privileges
                                                                           
          repayments of commercial paper
                                                                             
          class a common stock issued to bm&fbovespa sa
                                                                             
          distribution paid to non-controlling interest
                                                                    -607,500,000      
          change in net unrealized securities gains
                                                             109,500,000 -124,200,000 99,100,000 43,800,000 -188,000,000 -62,000,000 372,600,000 4,200,000 -10,400,000   400,000 26,300,000 8,100,000 7,100,000  
          change in net unrealized derivative gains
                                                                             
          investment in dme holdings limited
                                                              -22,800,000              
          guarantee of exercise right privileges
                                                                            -35,000 
          change in assets and liabilities:
                                                                             
          net change in nymex securities lending program investments
                                                                        151,500,000 274,400,000 -9,169,000 
          consideration paid in business combinations, net of cash acquired
                                                                             
          proceeds from sale of long-term investment
                                                                             
          purchase of bolsa mexicana de valores, s.a.b. de c.v. shares
                                                                            
          capital contributions to fxmarketspace limited
                                                                        -300,000 100,000 -900,000 -2,000,000 -3,019,000 
          proceeds (repayments) of commercial paper
                                                                      -299,900,000 200,000,000 -224,800,000 -199,900,000    
          net change in nymex securities lending program liabilities
                                                                        -157,000,000 -299,800,000 9,169,000 
          change in net unrealized derivatives gains
                                                                100,000 200,000 100,000 500,000 3,600,000 2,800,000   5,000,000 4,800,000 2,400,000  
          credit market analysis limited impairment
                                                                            
          amortization of debt financing costs, net of discount accretion on debt
                                                                             
          income tax payable
                                                                 -9,200,000 -164,100,000 157,200,000    146,900,000   -88,700,000 90,100,000  
          cash acquired upon formation of index services
                                                                             
          proceeds from (repayments of) commercial paper
                                                                             
          class a common stock issued to bm&fbovespa
                                                                             
          net accretion of discounts and amortization of debt financing costs
                                                                  1,100,000 1,900,000 1,100,000 1,400,000 1,300,000 1,100,000 1,100,000 1,200,000 1,600,000 8,800,000  
          cash acquired from index services
                                                                      -700,000 6,100,000      
          recognition of in-process research and development acquired from credit market analysis limited
                                                                            
          impairment of securities lending assets
                                                                            2,539,000 
          nymex membership rights payment
                                                                            
          merger-related transaction costs
                                                                            -33,394,000 
          purchase of derivative related to bm&fbovespa sa investment
                                                                             
          proceeds from sale of metals trading products
                                                                            10,723,000 
          stock issuance costs in merger with nymex holdings
                                                                             
          fair value of class a common stock, stock options and restricted stock units issued in connection with nymex holdings merger
                                                                            11,519,000 
          fair value of class a common stock issued in exchange for bm&fbovespa sa stock
                                                                             
          equity in losses of unconsolidated subsidiaries
                                                                     3,900,000 1,500,000 1,500,000 2,300,000 1,600,000 1,700,000 1,200,000 3,629,000 
          impairment of long-term investment
                                                                             
          cash acquired in formation of index services
                                                                             
          repayments of commercial paper, net of proceeds
                                                                             
          proceeds from employee stock purchase plan
                                                                        700,000   823,000 
          amortization of shares issued to board of directors
                                                                        600,000 600,000 700,000 600,000 642,000 
          allowance for doubtful accounts
                                                                        -100,000 300,000 300,000 -400,000 -682,000 
          net accretion of discounts and amortization of premiums on marketable securities
                                                                        -400,000 -2,200,000 -4,175,000 
          loss on sale of metals trading products
                                                                            -503,000 
          purchase of exercise right privileges
                                                                             
          cash acquired in merger with cbot holdings
                                                                             
          acquisition of credit market analysis limited, net of cash received
                                                                            87,000 
          acquisition of nymex holdings, net of cash received
                                                                             
          contingent consideration for liquidity direct technology, llc assets
                                                                             
          stock issuance costs in mergers with nymex holdings and cbot holdings
                                                                             
          repurchase of common stock, including costs
                                                                             
          fair value of class a common stock and stock options issued in connection with cbot holdings merger
                                                                             
          acquisition of nymex holdings, inc., net of cash received
                                                                             
          nymex membership rights payments
                                                                             
          excess tax benefits from option exercises and restricted stock vesting
                                                                         -400,000 1,200,000 400,000  
          dividends declared but unpaid on class a common stock
                                                                             
          net loss on derivative instruments
                                                                             
          proceeds (repayments) of commercial paper borrowings
                                                                           -858,800,000  
          non-cash restructuring
                                                                             
          net accretion of discounts and amortization of financing costs on debt
                                                                            7,462,000 
          change in assets and liabilities, net of effects from mergers with nymex holdings and cbot holdings:
                                                                             
          proceeds from maturities of marketable securities
                                                                            11,000,000 
          purchases of marketable securities
                                                                            -199,162,000 
          acquisition of swapstream, net of cash received
                                                                             
          purchase of derivative related to bm&f investment
                                                                             
          capital contributions to onechicago, llc
                                                                             
          proceeds from issuance of commercial paper, net of maturities
                                                                            295,334,000 
          change in net unrealized securities gains and losses
                                                                            -23,126,000 
          change in net unrealized derivatives gains and losses
                                                                             
          change in foreign currency translation adjustment
                                                                            -106,738,000 
          sale of membership shares by onechicago, llc
                                                                             
          fair value of class a common stock issued in exchange for bm&f stock
                                                                             
          cash flows from operating activities:
                                                                             
          cash flows from investing activities:
                                                                             
          cash acquired in merger with cbot holdings inc.
                                                                             
          purchase of derivative related to bm&f bovespa sa investment
                                                                             
          cash flows from financing activities:
                                                                             
          stock issuance costs in merger with cbot holdings
                                                                             
          repurchase of class a common stock
                                                                             
          supplemental disclosure of cash flow information:
                                                                             
          fair value of class a common stock issued in exchange for bm&f bovespa sa stock