7Baggers

TransUnion
(NYSE:TRU) 

TRU stock logo

TransUnion provides risk and information solutions. The company operates in three segments: U.S. Markets, International, and Consumer Interactive. The U.S. Markets segment provides consumer reports, actionable insights, and analytics, such as credit and other scores, as well as technology solutions ...

Founded: 1968
Full Time Employees: 8,000
CEO: Chris Cartwright  
Sector: Industrials
Industry: Consulting Services

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Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 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 
                                                           
      revenue
    1,245,700,000 1,171,300,000 1,169,500,000 1,139,700,000 1,095,700,000 1,036,800,000 1,085,000,000 1,040,800,000 1,021,200,000 954,300,000 968,700,000 968,000,000 940,300,000 902,100,000 938,200,000 948,300,000 921,300,000 649,100,000 791,600,000 774,200,000 745,300,000 698,700,000 695,900,000 634,400,000 687,600,000 685,600,000 689,300,000 661,900,000 619,300,000 613,100,000 603,600,000 563,100,000 537,400,000 506,100,000 498,000,000 474,800,000 455,000,000 435,900,000 437,600,000 425,700,000 405,700,000 386,100,000 389,100,000 378,500,000 353,100,000 335,600,000 338,200,000 327,500,000 303,400,000 292,400,000 299,500,000 300,800,000 290,500,000 475,300,000 291,700,000 
      yoy
    13.69% 12.97% 7.79% 9.50% 7.30% 8.65% 12.01% 7.52% 8.60% 5.79% 3.25% 2.08% 2.06% 38.98% 18.52% 22.49% 23.61% -7.10% 13.75% 22.04% 8.39% 1.91% 0.96% -4.15% 11.03% 11.83% 14.20% 17.55% 15.24% 21.14% 21.20% 18.60% 18.11% 16.10% 13.80% 11.53% 12.15% 12.90% 12.46% 12.47% 14.90% 15.05% 15.05% 15.57% 16.38% 14.77% 12.92% 8.88% 4.44% -38.48% 2.67%     
      qoq
    6.35% 0.15% 2.61% 4.02% 5.68% -4.44% 4.25% 1.92% 7.01% -1.49% 0.07% 2.95% 4.23% -3.85% -1.07% 2.93% 41.93% -18.00% 2.25% 3.88% 6.67% 0.40% 9.69% -7.74% 0.29% -0.54% 4.14% 6.88% 1.01% 1.57% 7.19% 4.78% 6.18% 1.63% 4.89% 4.35% 4.38% -0.39% 2.80% 4.93% 5.08% -0.77% 2.80% 7.19% 5.21% -0.77% 3.27% 7.94% 3.76% -2.37% -0.43% 3.55% -38.88% 62.94%  
      operating expenses
                                                           
      cost of services
    519,500,000 476,100,000 480,300,000 469,900,000 445,600,000 411,600,000 448,700,000 406,700,000 406,300,000 444,100,000 344,800,000 365,500,000 324,900,000 311,200,000 305,600,000 308,100,000 298,000,000 239,000,000 259,100,000 250,300,000 243,200,000 254,300,000 222,400,000 218,600,000 225,100,000 228,900,000 220,800,000 216,200,000 208,100,000 211,100,000 207,500,000 189,100,000 182,300,000 173,400,000 169,300,000 151,900,000 151,200,000 144,700,000 141,500,000 143,800,000 149,100,000 139,400,000 135,100,000 131,500,000 125,600,000 121,100,000 124,700,000 132,400,000 120,900,000 117,500,000 115,900,000 121,300,000 117,700,000 186,700,000 111,500,000 
      selling, general and administrative
    329,100,000 342,300,000 330,800,000 335,000,000 256,800,000 317,200,000 305,700,000 310,800,000 305,600,000 240,300,000 314,800,000 314,000,000 340,500,000 317,300,000 333,600,000 327,100,000 359,500,000 261,500,000 247,300,000 208,000,000 227,200,000 204,900,000 219,000,000 201,100,000 235,400,000 211,300,000 208,400,000 196,700,000 195,700,000 183,100,000 189,800,000 171,600,000 163,300,000 149,400,000 142,200,000 149,200,000 144,700,000 146,400,000 137,100,000 144,400,000 132,200,000 128,600,000 122,200,000 127,000,000 121,900,000 126,900,000 105,400,000 107,400,000 96,200,000 90,300,000 86,300,000 94,800,000 83,300,000 137,100,000 75,800,000 
      depreciation and amortization
    152,300,000 147,600,000 145,600,000 142,700,000 138,900,000 137,300,000 133,600,000 132,900,000 134,000,000 133,300,000 131,300,000 130,100,000 129,700,000 130,000,000 129,600,000 130,600,000 128,800,000 88,400,000 95,900,000 98,400,000 94,300,000 94,500,000 92,200,000 90,800,000 90,300,000 90,700,000 88,700,000 89,200,000 93,500,000 88,100,000 84,200,000 68,000,000 66,600,000 61,800,000 59,900,000 58,200,000 58,000,000 55,600,000 63,200,000 74,000,000 72,500,000 69,200,000 71,500,000 68,600,000 69,100,000 67,100,000 67,300,000 55,300,000 51,500,000 48,300,000 48,000,000 45,200,000 45,300,000 71,900,000 43,100,000 
      total operating expenses
    1,000,900,000 967,800,000 961,900,000 947,500,000 841,400,000 866,100,000 928,600,000 858,400,000 864,100,000 812,100,000 1,286,000,000 809,600,000 795,100,000 758,500,000 768,700,000 765,800,000 786,300,000 588,900,000 602,300,000 556,700,000 564,600,000 553,700,000 533,600,000 510,500,000 550,800,000 530,900,000 518,000,000 502,200,000 497,200,000 482,400,000 481,500,000 428,700,000 412,200,000 384,600,000 371,400,000 359,300,000 353,900,000 346,700,000 341,800,000 362,200,000 353,800,000 337,200,000 328,800,000 327,100,000 316,600,000 315,100,000 297,400,000 295,100,000 268,600,000 256,100,000 250,200,000 261,300,000 246,300,000 395,700,000 230,400,000 
      operating income
    244,800,000 203,600,000 207,600,000 192,200,000 254,400,000 170,800,000 156,400,000 182,400,000 157,200,000 142,200,000 -317,300,000 158,400,000 145,200,000 143,500,000 169,500,000 182,500,000 135,000,000 60,200,000 189,400,000 217,500,000 180,700,000 144,900,000 162,300,000 123,900,000 136,800,000 154,700,000 171,300,000 159,700,000 122,100,000 130,800,000 122,100,000 134,400,000 125,200,000 121,500,000 126,600,000 115,500,000 101,100,000 89,200,000 95,800,000 63,500,000 51,900,000 48,900,000 60,300,000 51,400,000 36,500,000 20,500,000 40,800,000 32,400,000 34,800,000 36,300,000 49,300,000 39,500,000 44,200,000 79,600,000 61,300,000 
      yoy
    -3.77% 19.20% 32.74% 5.37% 61.83% 20.11% -149.29% 15.15% 8.26% -0.91% -287.20% -13.21% 7.56% 138.37% -10.51% -16.09% -25.29% -58.45% 16.70% 75.54% 32.09% -6.33% -5.25% -22.42% 12.04% 18.27% 40.29% 18.82% -2.48% 7.65% -3.55% 16.36% 23.84% 36.21% 32.15% 81.89% 94.80% 82.41% 58.87% 23.54% 42.19% 138.54% 47.79% 58.64% 4.89% -43.53% -17.24% -17.97% -21.27% -54.40% -19.58%     
      qoq
    20.24% -1.93% 8.01% -24.45% 48.95% 9.21% -14.25% 16.03% 10.55% -144.82% -300.32% 9.09% 1.18% -15.34% -7.12% 35.19% 124.25% -68.22% -12.92% 20.37% 24.71% -10.72% 30.99% -9.43% -11.57% -9.69% 7.26% 30.79% -6.65% 7.13% -9.15% 7.35% 3.05% -4.03% 9.61% 14.24% 13.34% -6.89% 50.87% 22.35% 6.13% -18.91% 17.32% 40.82% 78.05% -49.75% 25.93% -6.90% -4.13% -26.37% 24.81% -10.63% -44.47% 29.85%  
      operating margin %
    19.65% 17.38% 17.75% 16.86% 23.22% 16.47% 14.41% 17.52% 15.39% 14.90% -32.76% 16.36% 15.44% 15.91% 18.07% 19.24% 14.65% 9.27% 23.93% 28.09% 24.25% 20.74% 23.32% 19.53% 19.90% 22.56% 24.85% 24.13% 19.72% 21.33% 20.23% 23.87% 23.30% 24.01% 25.42% 24.33% 22.22% 20.46% 21.89% 14.92% 12.79% 12.67% 15.50% 13.58% 10.34% 6.11% 12.06% 9.89% 11.47% 12.41% 16.46% 13.13% 15.22% 16.75% 21.01% 
      non-operating income and
                                                           
      interest expense
    -62,000,000 -61,500,000 -62,500,000 -55,700,000 -56,100,000 -62,000,000 -66,600,000 -67,900,000 -68,700,000 -71,000,000 -72,700,000 -72,600,000 -71,800,000 -67,500,000 -61,300,000 -51,900,000 -50,200,000 -35,500,000 -25,700,000 -25,600,000 -25,800,000 -27,600,000 -27,600,000 -33,500,000 -37,700,000 -39,900,000 -43,500,000 -45,200,000 -45,000,000 -45,000,000 -44,000,000 -25,900,000 -22,600,000 -21,800,000 -21,700,000 -22,600,000 -21,500,000 -22,400,000 -21,400,000 -21,300,000 -20,400,000 -19,800,000 -24,800,000 -44,900,000 -44,800,000 -44,600,000 -44,700,000 -50,000,000 -50,800,000 -49,500,000 -49,000,000 -49,200,000 -49,800,000 -97,400,000 -42,600,000 
      interest income
    7,200,000 7,000,000 8,800,000 8,800,000 8,600,000 8,600,000 7,800,000 6,700,000 5,400,000 5,600,000 5,000,000 4,300,000 5,800,000 1,600,000 1,100,000 1,200,000 700,000 900,000 1,000,000 900,000 700,000 1,400,000 1,200,000 1,100,000 1,900,000 2,100,000 2,200,000 1,800,000 1,500,000 2,000,000 1,300,000 1,400,000 800,000 1,300,000 1,500,000 1,400,000 1,300,000 1,400,000 1,200,000 1,100,000 800,000 900,000 900,000 1,200,000 900,000 1,000,000 1,100,000 700,000 500,000 400,000 800,000 200,000 300,000 200,000 600,000 
      earnings from equity method investments
    6,500,000 5,600,000 5,500,000 5,000,000 4,300,000 4,300,000 4,700,000 4,600,000 4,700,000 4,600,000 3,700,000 4,900,000 3,100,000 3,300,000 3,500,000 3,100,000 3,000,000 3,400,000 2,900,000 2,700,000 3,000,000 2,200,000 2,100,000 2,100,000 2,600,000 3,000,000 3,100,000 3,300,000 3,800,000 1,500,000 3,200,000 2,900,000 2,300,000 2,800,000 2,600,000 2,000,000 1,700,000 2,400,000 2,300,000 2,000,000 1,900,000 2,300,000 2,000,000 2,300,000 2,300,000 2,500,000 3,300,000 3,100,000 3,600,000       
      gain on acquisition of affiliate
    225,500,000                                                       
      other income and (expense)
    6,200,000 -12,400,000 -9,300,000 6,600,000 -17,400,000   -5,100,000 -15,700,000 -6,400,000 8,700,000 -18,300,000 -6,800,000 -9,800,000 -2,000,000 -6,400,000 -11,800,000 -38,400,000 -10,300,000 -100,000 -400,000 6,500,000 800,000 -700,000 -7,000,000 -13,700,000 -20,600,000 26,700,000 -6,800,000 -1,300,000 -3,200,000 -39,700,000 -2,700,000 -3,600,000 -4,800,000 -4,200,000 -6,600,000 -3,600,000 -2,200,000 -9,300,000 -7,600,000 -4,200,000 -37,300,000 -5,300,000 -2,300,000 -1,900,000 -400,000 48,000,000 -1,700,000 -15,400,000 1,400,000 1,500,000 -600,000 -13,700,000 -600,000 
      total non-operating income and
    183,300,000 -61,300,000 -57,500,000 -35,400,000 -60,600,000 -70,100,000 -59,600,000 -61,700,000 -74,100,000 -67,100,000 -55,400,000 -81,700,000 -69,600,000 -72,400,000 -58,700,000 -54,000,000 -58,300,000 -69,500,000 -32,200,000 -22,100,000 -22,500,000 -17,500,000 -23,600,000 -30,900,000 -40,200,000 -48,600,000 -58,800,000 -13,400,000 -46,500,000 -42,900,000 -42,700,000 -61,300,000 -22,200,000 -21,300,000 -22,400,000 -23,400,000 -25,100,000 -22,200,000 -20,100,000                 
      income before income taxes
    428,100,000 125,175,000 150,100,000 156,800,000 193,800,000             127,675,000 157,200,000 195,400,000 158,200,000            103,000,000 100,200,000 104,200,000 92,100,000 76,000,000 67,000,000 75,700,000 36,000,000 26,600,000 28,100,000 1,100,000 4,700,000 -7,400,000 -22,500,000 100,000 34,200,000 -13,600,000 -14,500,000 2,500,000     
      provision for income taxes
    -27,600,000 -37,700,000 -50,000,000 -44,400,000 -41,000,000 -29,900,000 -24,900,000 -31,000,000 -13,000,000 15,400,000 -22,200,000 -19,300,000 -18,600,000 -35,800,000 -30,600,000 -29,200,000 -24,400,000 -1,800,000 -39,000,000 -62,500,000 -27,500,000 -22,900,000 -32,100,000 -23,000,000 -22,300,000 -16,050,000 -24,200,000 -39,400,000 -600,000 -18,025,000 -28,600,000 -15,800,000 -27,600,000 -17,175,000 -32,300,000 -24,800,000 -11,500,000 -14,400,000 -31,200,000 -16,300,000  -7,000,000 -2,100,000 -5,100,000            
      net income
    400,400,000 104,600,000 100,200,000 112,400,000 152,700,000 70,700,000 71,900,000 89,700,000 70,000,000 90,500,000 -395,400,000 57,200,000 56,900,000 50,400,000 82,700,000 99,600,000 52,000,000 1,020,500,000 118,200,000 132,900,000 130,600,000 104,600,000 106,700,000 70,000,000 74,300,000 86,400,000 88,300,000 104,000,000 73,400,000 105,500,000 49,400,000 57,300,000 75,400,000 248,000,000 71,900,000 67,300,000 64,500,000 52,600,000 44,500,000 19,700,000 14,600,000 21,100,000 -1,000,000 -400,000 -4,400,000 -10,700,000 -100,000 19,900,000 -13,500,000 -15,700,000 -1,400,000 -6,100,000 -5,000,000 -26,900,000 13,500,000 
      yoy
    162.21% 47.95% 39.36% 25.31% 118.14% -21.88% -118.18% 56.82% 23.02% 79.56% -578.11% -42.57% 9.42% -95.06% -30.03% -25.06% -60.18% 875.62% 10.78% 89.86% 75.77% 21.06% 20.84% -32.69% 1.23% -18.10% 78.74% 81.50% -2.65% -57.46% -31.29% -14.86% 16.90% 371.48% 61.57% 241.62% 341.78% 149.29% -4550.00% -5025.00% -431.82% -297.20% 900.00% -102.01% -67.41% -31.85% -92.86% -426.23% 170.00% -41.64% -110.37%     
      qoq
    282.79% 4.39% -10.85% -26.39% 115.98% -1.67% -19.84% 28.14% -22.65% -122.89% -791.26% 0.53% 12.90% -39.06% -16.97% 91.54% -94.90% 763.37% -11.06% 1.76% 24.86% -1.97% 52.43% -5.79% -14.00% -2.15% -15.10% 41.69% -30.43% 113.56% -13.79% -24.01% -69.60% 244.92% 6.84% 4.34% 22.62% 18.20% 125.89% 34.93% -30.81% -2210.00% 150.00% -90.91% -58.88% 10600.00% -100.50% -247.41% -14.01% 1021.43% -77.05% 22.00% -81.41% -299.26%  
      net income margin %
    32.14% 8.93% 8.57% 9.86% 13.94% 6.82% 6.63% 8.62% 6.85% 9.48% -40.82% 5.91% 6.05% 5.59% 8.81% 10.50% 5.64% 157.22% 14.93% 17.17% 17.52% 14.97% 15.33% 11.03% 10.81% 12.60% 12.81% 15.71% 11.85% 17.21% 8.18% 10.18% 14.03% 49.00% 14.44% 14.17% 14.18% 12.07% 10.17% 4.63% 3.60% 5.46% -0.26% -0.11% -1.25% -3.19% -0.03% 6.08% -4.45% -5.37% -0.47% -2.03% -1.72% -5.66% 4.63% 
      less: net income attributable to noncontrolling interests
    -3,300,000 -3,500,000 -3,600,000 -2,800,000 -4,700,000                                                -1,300,000 -2,700,000 -2,200,000 
      net income attributable to transunion
    397,100,000 101,200,000 96,600,000 109,600,000 148,100,000 66,200,000 68,000,000 85,000,000 65,100,000 87,000,000 -399,800,000 53,900,000 52,600,000 46,500,000 79,200,000 95,600,000 48,300,000 1,017,400,000 114,200,000 127,600,000 127,900,000 101,700,000 102,800,000 68,500,000 70,200,000 82,800,000 91,700,000 101,500,000 70,900,000 102,200,000 46,300,000 55,000,000 73,100,000 245,200,000 68,800,000 64,900,000 62,300,000 49,600,000 41,200,000 17,300,000 12,600,000 19,200,000 -4,000,000 -2,600,000            
      basic earnings per common share from:
                                                           
      diluted earnings per common share from:
                                                           
      weighted-average shares outstanding:
                                                           
      basic
    192,700,000 194,400,000 194,800,000 195,000,000 195,100,000 194,400,000 194,600,000 194,200,000 194,100,000 193,400,000 193,400,000 193,200,000 193,000,000 192,500,000 192,600,000 192,500,000 192,100,000 191,400,000 191,600,000 191,400,000 190,900,000 189,900,000 190,200,000 189,900,000 189,200,000 187,800,000 188,200,000 187,500,000 186,600,000 184,600,000 185,100,000 184,300,000 183.7 182.4 182.2 181.9 182.7 182.6 182.7 182.5 182.4 165.3 182.1 148.5 111 110.5          
      diluted
    194,500,000 196,600,000 197,200,000 197,200,000 197,300,000 196,700,000 197,000,000 195,200,000 195,300,000 193,400,000 193,400,000 194,000,000 193,900,000 193,100,000 193,200,000 193,100,000 193,200,000 193,000,000 193,100,000 192,800,000 192,500,000 192,200,000 192,300,000 192,000,000 192,200,000 191,800,000 192,000,000 191,300,000 191,000,000 190,900,000 191,200,000 190,800,000 190.1 189.9 189.2 189.3 190.3 184.6 184.8 184.4 184 166.8 182.1 148.5 111 110.5          
      restructuring
     1,700,000 5,100,000    40,500,000 8,100,000 18,200,000                                               
      goodwill impairment
             -81,000,000 495,000,000                                             
      other (expense) and income
         -6,550,000 -5,400,000                                                 
      income from continuing operations before income taxes
         100,600,000 96,800,000 120,700,000 83,000,000 75,200,000 -372,700,000 76,600,000 75,600,000 71,100,000 110,800,000 128,500,000 76,700,000     127,500,000 138,700,000 93,000,000 96,600,000 106,200,000 112,500,000 146,300,000 75,500,000 87,900,000 79,400,000 73,100,000                      8,500,000  
      income from continuing operations
         70,700,000 71,900,000 89,700,000 70,000,000 90,500,000 -394,900,000 57,300,000 57,000,000 35,300,000 80,300,000 99,300,000 52,300,000     104,600,000 106,700,000 70,000,000 74,300,000 86,400,000 88,300,000 107,000,000 74,900,000 105,500,000 50,800,000 57,300,000                      5,750,000  
      discontinued operations, net of tax
              -500,000 -200,000 -100,000 15,100,000 2,400,000 300,000 -400,000           -3,000,000 -1,600,000 -100,000 -1,400,000                         
      less: net income attributable to the noncontrolling interests
         -3,350,000 -3,900,000 -4,700,000 -4,900,000 -2,975,000 -4,300,000 -3,300,000 -4,300,000 -2,825,000 -3,500,000 -4,100,000 -3,700,000       -1,500,000 -4,100,000   -2,500,000 -2,400,000 -1,900,000 -3,100,000 -2,300,000 -2,300,000 -1,900,000 -3,100,000 -2,400,000 -2,200,000 -1,950,000 -3,300,000 -2,400,000 -2,000,000 -1,875,000 -3,000,000 -2,200,000 -2,200,000 -1,425,000 -2,500,000 -2,000,000 -1,200,000 -1,250,000 -2,000,000 -1,700,000    
      income from continuing operations attributable to transunion
         283,280,000 350,000 440,000 340,000 87,100,000 -399,300,000 54,100,000 52,700,000 31,400,000 76,800,000 95,300,000 48,700,000     101,700,000 102,800,000 68,500,000 70,200,000 82,800,000 91,700,000 104,500,000 72,500,000 102,200,000 47,700,000 55,000,000                        
      less: income from continuing operations attributable to noncontrolling interests
             -3,500,000 -4,300,000 -3,300,000 -4,300,000 -3,900,000 -3,500,000 -4,100,000 -3,700,000           -2,500,000 -2,400,000 -3,300,000 -3,100,000 -2,300,000                        
      less: net loss attributable to the noncontrolling interests
                     -3,000,000 -4,000,000 -5,200,000 -2,700,000 -2,375,000 -3,900,000   -375,000 3,400,000                             
      earnings per share:
                                                           
      basic
                     0.483 0.6 0.67 0.67            0.4 1.34 0.38 0.36 0.34 0.27 0.23 0.09 0.07 0.12 -0.02 -0.02 -0.06           
      diluted
                     0.48 0.59 0.66 0.66            0.38 1.29 0.36 0.34 0.33 0.26 0.22 0.09 0.07 0.12 -0.02 -0.02 -0.06           
      less: net loss from continuing operations attributable to noncontrolling interests
                         -2,375,000 -3,900,000                                 
      less: net income from continuing operations attributable to noncontrolling interests
                           -1,500,000 -4,100,000                               
      less: loss from continuing operations attributable to noncontrolling interests
                             -375,000 3,400,000                             
      non-operating income and expense
                                                           
      total non-operating income and expense
                                           -27,500,000 -25,300,000 -20,800,000 -59,200,000 -46,700,000 -43,900,000 -43,000,000 -40,700,000 1,800,000 -48,400,000 -50,800,000 -46,800,000 -47,500,000 -50,100,000 -110,900,000 -42,600,000 
      benefit for income taxes
                                            -12,000,000    3,000,000 11,800,000 -200,000 -14,300,000 100,000   1,900,000 900,000 -2,750,000  
      net loss attributable to transunion
                                                -6,600,000           
      net income attributable to transunion holding company, inc.
                                                 150,000 -2,600,000 17,900,000 -14,700,000    -6,300,000  11,300,000 
      benefit from income taxes
                                                     -1,200,000 -3,900,000    -5,200,000 
      net income attributable to transunion holding company inc.
                                                     -4,375,000 -3,400,000 -7,800,000    
      income from operations before income taxes
                                                       -8,000,000 -5,900,000  18,700,000 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 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 
                                                             
        assets
                                                             
        current assets:
                                                             
        cash and cash equivalents
      732,500,000 853,600,000 749,900,000 687,500,000 609,900,000 679,500,000 643,200,000 543,200,000 433,600,000 476,200,000 420,900,000 442,000,000 439,000,000 585,300,000 596,100,000 521,800,000 1,296,800,000 1,842,400,000 708,800,000 526,200,000 433,000,000 493,000,000 554,000,000 432,200,000 305,700,000 274,100,000 235,900,000 194,700,000 200,900,000 187,400,000 226,600,000 192,300,000 154,300,000 115,800,000 253,300,000 142,000,000 131,200,000 182,200,000 137,900,000 141,300,000 150,300,000 133,200,000 128,700,000 758,000,000 87,000,000 77,900,000 103,100,000 93,200,000 59,400,000 111,200,000 117,500,000 130,200,000 117,400,000 154,300,000 127,200,000 
        trade accounts receivable, net of allowance of 21.2 and 27.7
      1,047,400,000                                                       
        other current assets
      237,300,000 257,700,000 335,300,000 322,300,000 326,200,000 323,400,000 228,200,000 222,100,000 214,700,000 275,900,000 286,500,000 302,500,000 289,500,000 262,700,000 286,500,000 308,600,000 282,400,000 231,600,000 228,200,000 215,000,000 202,300,000 159,500,000 194,600,000 199,400,000 151,100,000 170,200,000 198,000,000 185,700,000 166,500,000 136,500,000 160,600,000 168,700,000 148,200,000 146,200,000 116,800,000 117,600,000 92,600,000 89,900,000 82,100,000 100,300,000 80,300,000 66,000,000 95,000,000 117,200,000 129,600,000 122,700,000 66,100,000 71,700,000 62,000,000 73,500,000 63,900,000 76,500,000 75,800,000 82,700,000 77,800,000 
        total current assets
      2,017,200,000 2,016,300,000 1,978,800,000 1,905,700,000 1,818,400,000 1,801,800,000 1,669,800,000 1,543,900,000 1,422,900,000 1,475,100,000 1,401,900,000 1,417,300,000 1,381,100,000 1,450,200,000 1,538,800,000 1,493,700,000 2,168,100,000 2,632,000,000 1,450,600,000 1,253,000,000 1,123,400,000 1,106,200,000 1,216,600,000 1,064,700,000 924,800,000 888,200,000 892,100,000 869,600,000 893,200,000 841,500,000 886,000,000 853,600,000 646,500,000 588,700,000 689,000,000 550,300,000 513,700,000 550,000,000 492,700,000 498,100,000 493,800,000 427,500,000 453,700,000 1,104,000,000 428,300,000 401,000,000 365,500,000 357,900,000 303,500,000 349,700,000 365,100,000 386,100,000 374,000,000 400,600,000 382,700,000 
        property, plant and equipment, net of accumulated depreciation
      275,100,000 258,400,000 233,100,000 228,500,000 199,800,000 203,500,000 181,500,000 183,600,000 189,900,000 199,300,000 182,900,000 195,200,000 209,500,000 218,200,000 212,000,000 218,300,000 233,000,000 247,700,000 196,400,000 209,300,000 215,000,000 223,200,000 202,800,000 203,300,000 210,000,000 219,000,000 201,800,000 215,100,000 214,500,000 220,300,000 198,200,000 202,900,000 189,300,000 198,600,000 182,600,000 185,400,000 192,000,000 197,500,000 190,400,000 192,600,000 201,300,000 183,000,000 177,700,000 183,900,000 176,100,000 181,400,000 170,000,000 165,400,000 149,300,000 150,400,000 125,200,000 108,900,000 116,300,000 121,200,000 113,200,000 
        goodwill
      5,775,600,000 5,259,500,000 5,252,500,000 5,256,700,000 5,162,700,000 5,144,300,000 5,184,500,000 5,161,800,000 5,170,400,000 5,176,000,000 5,085,500,000 5,597,300,000 5,569,800,000 5,551,400,000 5,513,400,000 5,587,200,000 5,504,300,000 5,525,700,000 3,424,700,000 3,455,300,000 3,454,800,000 3,461,500,000 3,313,400,000 3,280,700,000 3,277,600,000 3,377,800,000 3,312,600,000 3,352,500,000 3,354,100,000 3,293,600,000 3,339,000,000 3,392,300,000 2,377,500,000 2,368,800,000 2,205,900,000 2,199,300,000 2,203,000,000 2,173,900,000 2,160,000,000 2,120,500,000 2,105,900,000 1,983,400,000 1,977,700,000 2,004,200,000 2,009,000,000 2,023,900,000 1,994,300,000 2,012,600,000 1,917,200,000 1,909,700,000 1,855,400,000 1,792,900,000 1,809,000,000 1,804,200,000 1,740,800,000 
        other intangibles, net of accumulated amortization of 2,830.0 and 2,716.3
      3,563,800,000                                                       
        other assets
      415,600,000 480,200,000 485,300,000 488,100,000 562,600,000 577,700,000 661,100,000 744,700,000 791,500,000 739,400,000 809,700,000 806,600,000 766,000,000 771,000,000 713,300,000 637,700,000 587,300,000 459,000,000 275,500,000 266,200,000 251,700,000 236,100,000 229,300,000 229,200,000 233,400,000 236,300,000 234,500,000 240,700,000 201,200,000 136,300,000 148,000,000 143,200,000 150,600,000 136,600,000 116,000,000 112,500,000 107,300,000 97,500,000 103,200,000 91,800,000 82,300,000 82,700,000 87,300,000 112,500,000 109,000,000 119,900,000 119,800,000 109,700,000 168,300,000 138,600,000 135,500,000 127,400,000 132,800,000 129,800,000 110,700,000 
        total assets
      12,047,300,000 11,112,900,000 11,112,800,000 11,117,700,000 10,949,100,000 10,984,800,000 11,053,800,000 11,025,200,000 11,024,700,000 11,105,100,000 11,026,400,000 11,626,500,000 11,563,100,000 11,666,300,000 11,804,100,000 11,875,600,000 12,197,200,000 12,635,000,000 7,508,400,000 7,395,100,000 7,287,600,000 7,311,600,000 7,197,800,000 7,025,100,000 6,932,900,000 7,113,200,000 7,022,000,000 7,127,300,000 7,175,800,000 7,039,800,000 7,141,300,000 7,110,100,000 5,163,800,000 5,118,500,000 4,882,500,000 4,756,600,000 4,753,800,000 4,781,200,000 4,775,900,000 4,723,900,000 4,729,600,000 4,446,700,000 4,489,200,000 5,254,200,000 4,614,300,000 4,665,800,000 4,579,400,000 4,633,700,000 4,452,700,000 4,492,300,000 4,375,000,000 4,275,100,000 4,329,500,000 4,378,800,000 4,274,600,000 
        liabilities and stockholders’ equity
                                                             
        current liabilities:
                                                             
        trade accounts payable
      379,100,000 349,900,000 361,900,000 345,100,000 325,600,000 294,600,000 319,400,000 312,600,000 281,300,000 251,300,000 270,700,000 320,600,000 298,400,000 250,400,000 257,300,000 281,000,000 260,300,000 270,200,000 227,700,000 212,200,000 203,500,000 193,200,000 186,700,000 198,000,000 187,100,000 176,200,000 174,500,000 178,700,000 171,800,000 169,900,000 159,100,000 171,500,000 128,800,000 131,300,000 128,500,000 120,500,000 115,400,000 114,200,000 109,000,000 112,200,000 111,000,000 105,400,000 94,600,000 108,300,000 102,800,000 106,500,000 92,700,000 107,000,000 94,200,000 100,300,000 82,300,000 80,900,000 82,600,000 78,400,000 69,300,000 
        current portion of long-term debt
      205,000,000 196,900,000 84,200,000 76,100,000 70,600,000 70,600,000                                            13,800,000  9,500,000 10,500,000 10,600,000 10,500,000 
        other current liabilities
      461,500,000 607,600,000 538,800,000 519,900,000 492,300,000 694,400,000 609,800,000 551,600,000 502,200,000 661,800,000 525,900,000 500,700,000 465,300,000 540,500,000 506,900,000 511,600,000 833,700,000 972,200,000 375,800,000 320,300,000 364,000,000 415,800,000 376,300,000 328,500,000 309,800,000 336,500,000 359,700,000 310,600,000 274,200,000 284,100,000 301,100,000 216,600,000 182,400,000 207,800,000 212,400,000 173,600,000 173,400,000 208,700,000 186,000,000 163,300,000 122,400,000 146,700,000 133,700,000 147,100,000 115,400,000 149,400,000 128,100,000 121,400,000 116,000,000 133,500,000 130,700,000 107,900,000 108,100,000 129,300,000 111,300,000 
        total current liabilities
      1,045,600,000 1,154,400,000 984,900,000 941,100,000 888,500,000 1,059,600,000 995,700,000 930,700,000 861,000,000 1,002,700,000 911,100,000 935,900,000 878,400,000 905,500,000 889,900,000 916,000,000 1,208,600,000 1,357,000,000 680,000,000 601,800,000 630,200,000 664,500,000 618,400,000 582,200,000 555,500,000 571,400,000 628,100,000 575,700,000 545,900,000 548,500,000 545,700,000 536,800,000 400,400,000 458,400,000 375,300,000 394,200,000 381,500,000 373,300,000 344,500,000 326,300,000 281,400,000 296,000,000 272,500,000 1,284,800,000 331,000,000 329,900,000 248,500,000 257,400,000 255,900,000 247,600,000 289,100,000 198,300,000 201,200,000 218,300,000 191,100,000 
        long-term debt
      5,402,400,000 4,906,900,000 5,035,900,000 5,060,400,000 5,060,200,000 5,076,600,000 5,134,900,000 5,174,600,000 5,253,100,000 5,250,800,000 5,253,900,000 5,354,500,000 5,455,000,000 5,555,500,000 5,778,900,000 5,805,200,000 5,831,500,000 6,251,300,000 3,253,100,000 3,273,200,000 3,293,300,000 3,398,700,000 3,560,600,000 3,573,400,000 3,585,600,000 3,598,300,000 3,646,000,000 3,831,500,000 3,951,800,000 3,976,400,000 4,057,600,000 4,071,300,000 2,334,700,000 2,345,300,000 2,352,100,000 2,297,300,000 2,309,300,000 2,325,200,000 2,338,200,000 2,350,300,000 2,309,500,000 2,164,600,000 2,174,500,000 1,851,600,000 2,863,600,000 2,865,900,000 2,869,500,000 2,874,500,000 2,845,800,000 2,853,100,000 2,650,500,000 2,657,200,000 2,663,900,000 2,670,300,000 2,289,000,000 
        deferred taxes
      535,800,000 389,800,000 393,000,000 370,700,000 386,400,000 415,300,000 481,800,000 523,000,000 566,700,000 592,900,000 666,200,000 699,700,000 726,700,000 762,000,000 801,900,000 824,300,000 806,800,000 787,600,000 419,800,000 430,700,000 407,800,000 396,800,000 391,600,000 401,800,000 415,900,000 439,100,000 442,000,000 461,300,000 479,600,000 478,000,000 529,600,000 545,600,000 418,200,000 419,400,000 571,100,000 564,900,000 572,000,000 579,000,000 603,500,000 612,300,000 632,700,000 588,400,000 623,900,000 641,600,000 663,400,000 676,800,000 651,000,000 661,500,000 621,600,000 636,900,000      
        other liabilities
      148,800,000 116,500,000 120,500,000 119,300,000 121,500,000 114,500,000 120,200,000 159,700,000 166,700,000 153,200,000 154,600,000 174,400,000 171,400,000 173,900,000 179,600,000 190,800,000 208,400,000 232,900,000 174,300,000 181,800,000 193,200,000 215,500,000 225,000,000 231,100,000 211,700,000 165,000,000 176,400,000 150,300,000 121,600,000 54,700,000 44,300,000 42,100,000 78,400,000 70,800,000 29,300,000 29,900,000 26,000,000 30,700,000 58,200,000 54,400,000 51,800,000 27,800,000 28,300,000 26,900,000 24,000,000 22,100,000 23,700,000 23,200,000 19,700,000 22,600,000 678,100,000 656,300,000 671,700,000 679,400,000 670,600,000 
        total liabilities
      7,132,600,000 6,567,600,000 6,534,300,000 6,491,500,000 6,456,600,000 6,666,000,000 6,732,600,000 6,788,000,000 6,847,500,000 6,999,600,000 6,985,800,000 7,164,500,000 7,231,600,000 7,396,900,000 7,650,400,000 7,736,700,000 8,055,300,000 8,628,800,000 4,527,200,000 4,487,500,000 4,524,500,000 4,675,500,000 4,795,600,000 4,788,500,000 4,768,700,000 4,773,800,000 4,892,500,000 5,018,800,000 5,098,900,000 5,057,600,000 5,177,200,000 5,195,800,000 3,231,700,000 3,293,900,000 3,327,800,000 3,286,300,000 3,288,800,000 3,308,200,000 3,344,400,000 3,343,300,000 3,275,400,000 3,076,800,000 3,099,200,000 3,804,900,000 3,882,000,000 3,894,700,000 3,792,700,000 3,816,600,000 3,743,000,000 3,760,200,000 3,617,700,000 3,511,800,000 3,536,800,000 3,568,000,000 3,150,700,000 
        stockholders’ equity:
                                                             
        preferred stock, 0.01 par value...
                                                             
        common stock, 0.01 par value...
      1,900,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 2,000,000 1,900,000 1,900,000 1,900,000 1,900,000 1,900,000 1,900,000 1,900,000 1,900,000 1,900,000 1,900,000 1,900,000 1,900,000 1,900,000 1,800,000 1,800,000 1,800,000 1,800,000 1,800,000 1,800,000 1,800,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 1,100,000 
        additional paid-in capital
      2,460,300,000 2,424,000,000 2,536,300,000 2,600,700,000 2,595,100,000 2,558,900,000 2,524,300,000 2,476,900,000 2,450,500,000 2,412,900,000 2,386,600,000 2,345,300,000 2,322,300,000 2,290,300,000 2,270,000,000 2,239,900,000 2,219,200,000 2,188,900,000 2,161,500,000 2,133,700,000 2,116,800,000 2,088,100,000 2,074,000,000 2,056,400,000 2,038,100,000 2,022,300,000 1,999,700,000 1,976,400,000 1,967,600,000 1,947,300,000 1,923,900,000 1,898,700,000 1,882,500,000 1,863,500,000 1,848,700,000 1,835,400,000 1,821,600,000 1,844,900,000 1,831,500,000 1,832,200,000 1,839,500,000 1,850,300,000 1,854,100,000 1,857,200,000 1,141,200,000 1,138,000,000 1,128,500,000 1,126,200,000 1,123,100,000 1,121,800,000 1,116,000,000 1,113,200,000 1,111,500,000 1,109,400,000 1,105,000,000 
        treasury stock
      -391,000,000 -370,300,000 -368,400,000 -342,000,000 -340,100,000 -334,600,000 -333,000,000 -314,300,000 -313,500,000 -302,900,000 -302,200,000 -294,400,000 -292,100,000 -284,500,000 -282,000,000 -281,200,000 -280,800,000 -252,000,000 -250,100,000 -249,200,000 -243,800,000 -215,200,000 -214,700,000 -212,200,000 -211,800,000 -179,200,000 -177,900,000 -177,100,000 -177,000,000 -139,900,000 -139,500,000 -139,300,000 -139,200,000 -138,800,000 -138,800,000 -138,800,000 -73,500,000 -5,300,000 -4,600,000 -4,600,000 -4,600,000 -4,600,000 -4,300,000 -4,300,000 -4,300,000 -4,300,000 -4,300,000 -4,200,000 -4,100,000 -4,100,000 -3,700,000 -2,700,000 -2,700,000 -700,000 -700,000 
        retained earnings
      3,096,100,000 2,723,700,000 2,643,900,000 2,571,100,000 2,484,500,000 2,357,900,000 2,312,600,000 2,266,000,000 2,199,100,000 2,157,100,000 2,091,300,000 2,511,500,000 2,478,400,000 2,446,600,000 2,420,900,000 2,361,500,000 2,284,500,000 2,254,600,000 1,255,700,000 1,160,100,000 1,050,800,000 937,400,000 850,300,000 761,700,000 707,700,000 652,000,000 583,400,000 506,100,000 418,800,000 363,100,000 275,200,000 243,200,000 202,300,000 137,400,000                -417,700,000  -396,800,000 -389,000,000 -382,600,000 -600,000 
        accumulated other comprehensive loss
      -413,700,000 -340,200,000 -340,400,000 -311,600,000 -355,700,000 -367,200,000 -289,500,000 -295,800,000 -262,800,000 -260,900,000 -238,700,000 -202,600,000 -282,200,000 -284,500,000 -357,400,000 -283,500,000 -184,700,000 -285,400,000 -288,300,000 -241,900,000 -260,300,000 -272,100,000 -409,700,000 -468,600,000 -468,200,000 -251,600,000 -369,700,000 -296,200,000 -229,400,000 -282,700,000 -193,900,000 -187,500,000 -113,600,000 -135,300,000 -147,900,000 -151,100,000 -140,900,000 -174,800,000 -168,900,000 -184,800,000 -185,300,000 -191,800,000 -182,800,000 -143,700,000 -145,000,000  -104,000,000 -78,900,000 -81,200,000  -64,400,000     
        total transunion stockholders’ equity
      4,753,600,000 4,439,200,000 4,473,400,000 4,520,200,000 4,385,800,000 4,217,000,000 4,216,400,000 4,134,800,000 4,075,300,000 4,008,200,000 3,939,000,000 4,361,800,000 4,228,300,000 4,169,900,000 4,053,500,000 4,038,700,000 4,040,200,000 3,908,100,000 2,880,800,000 2,804,700,000 2,665,500,000 2,540,200,000 2,301,900,000 2,139,300,000 2,067,700,000 2,245,400,000 2,037,400,000 2,011,100,000 1,981,900,000 1,889,700,000 1,867,600,000 1,817,000,000 1,833,900,000 1,728,700,000 1,456,100,000 1,370,900,000 1,367,600,000 1,362,800,000 1,306,500,000 1,250,200,000 1,239,700,000 1,231,400,000 1,225,300,000 1,271,600,000 556,200,000 587,100,000          
        noncontrolling interests
      161,100,000 106,100,000 105,100,000 106,000,000 106,700,000 101,800,000 104,800,000 102,400,000 101,900,000 97,300,000 101,600,000 100,200,000 103,200,000 99,500,000 100,200,000 100,200,000 101,700,000 98,100,000 100,400,000 102,900,000 97,600,000 95,900,000 100,300,000 97,300,000 96,500,000  92,100,000 97,400,000 95,000,000  96,500,000 97,300,000 98,200,000  98,600,000 99,400,000 97,400,000  125,000,000 130,400,000 148,000,000 135,600,000 151,600,000 162,500,000 163,100,000 160,600,000 166,400,000 169,600,000 85,700,000 86,600,000 89,900,000 89,900,000 90,300,000 93,300,000 11,100,000 
        total stockholders’ equity
      4,914,700,000 4,545,300,000 4,578,500,000 4,626,200,000 4,492,500,000 4,318,800,000 4,321,200,000 4,237,200,000 4,177,200,000 4,105,500,000 4,040,600,000 4,462,000,000 4,331,500,000 4,269,400,000 4,153,700,000 4,138,900,000 4,141,900,000 4,006,200,000 2,981,200,000 2,907,600,000 2,763,100,000 2,636,100,000 2,402,200,000 2,236,600,000 2,164,200,000 2,339,400,000 2,129,500,000 2,108,500,000 2,076,900,000 1,982,200,000 1,964,100,000 1,914,300,000 1,932,100,000 1,824,600,000 1,554,700,000 1,470,300,000 1,465,000,000 1,473,000,000 1,431,500,000 1,380,600,000 1,387,700,000 1,367,000,000 1,376,900,000 1,434,100,000 719,300,000 747,700,000 770,600,000 799,300,000 692,200,000 714,500,000 738,800,000 742,900,000 770,500,000 796,100,000 1,105,600,000 
        total liabilities and stockholders’ equity
      12,047,300,000 11,112,900,000 11,112,800,000 11,117,700,000 10,949,100,000 10,984,800,000 11,053,800,000 11,025,200,000 11,024,700,000 11,105,100,000 11,026,400,000 11,626,500,000 11,563,100,000 11,666,300,000 11,804,100,000 11,875,600,000 12,197,200,000 12,635,000,000 7,508,400,000 7,395,100,000 7,287,600,000 7,311,600,000 7,197,800,000 7,025,100,000 6,932,900,000 7,113,200,000 7,022,000,000 7,127,300,000 7,175,800,000 7,039,800,000 7,141,300,000 7,110,100,000 5,163,800,000 5,118,500,000 4,882,500,000 4,756,600,000 4,753,800,000 4,781,200,000 4,775,900,000 4,723,900,000 4,729,600,000 4,446,700,000 4,489,200,000 5,254,200,000 4,614,300,000 4,665,800,000 4,579,400,000 4,633,700,000 4,452,700,000 4,492,300,000 4,375,000,000 4,275,100,000 4,329,500,000 4,378,800,000 4,274,600,000 
        trade accounts receivable, net of allowance of 27.7 and 19.9
       905,000,000                                                      
        other intangibles, net of accumulated amortization of 2,716.3 and 2,294.5
       3,098,500,000                                                      
        trade accounts receivable, net of allowance of 25.8 and 19.9
        893,600,000                                                     
        other intangibles, net of accumulated amortization of 2,629.9 and 2,294.5
        3,163,100,000                                                     
        trade accounts receivable, net of allowance of 27.4 and 19.9
         895,900,000                                                    
        other intangibles, net of accumulated amortization of 2,522.2 and 2,294.5
         3,238,700,000                                                    
        trade accounts receivable, net of allowance of 24.4 and 19.9
          882,300,000                                                   
        other intangibles, net of accumulated amortization of 2,421.7 and 2,294.5
          3,205,600,000                                                   
        trade accounts receivable, net of allowance of 19.9 and 16.4
           798,900,000                                                  
        other intangibles, net of accumulated amortization of 2,294.5 and 2,719.8
           3,257,500,000                                                  
        trade accounts receivable, net of allowance of 18.2 and 16.4
            798,400,000                                                 
        other intangibles, net of accumulated amortization of 3,055.8 and 2,719.8
            3,356,900,000                                                 
        short-term debt and current portion of long-term debt
            66,500,000 66,500,000 77,500,000 89,600,000 114,600,000 114,600,000 114,600,000 114,600,000 114,600,000 114,600,000 114,600,000 114,600,000 76,500,000 69,300,000 62,700,000 55,500,000 55,400,000 55,700,000 58,600,000 58,700,000 93,900,000 86,400,000 79,000,000 71,700,000 64,200,000 139,200,000 89,200,000 119,300,000 34,400,000 100,100,000 92,700,000 50,400,000 49,500,000 50,800,000 48,000,000 43,900,000 44,200,000 1,029,400,000 112,800,000 74,000,000 27,700,000 29,000,000 45,700,000  76,100,000     
        trade accounts receivable, net of allowance of 19.1 and 16.4
             778,600,000                                                
        other intangibles, net of accumulated amortization of 2,920.5 and 2,719.8
             3,391,200,000                                                
        trade accounts receivable, net of allowance of 17.6 and 16.4
              774,600,000                                               
        other intangibles, net of accumulated amortization of 2,814.1 and 2,719.8
              3,450,000,000                                               
        trade accounts receivable, net of allowance of 16.4 and 11.0
               723,000,000                                              
        other intangibles, net of accumulated amortization of 2,719.8 and 2,268.6
               3,515,300,000                                              
        trade accounts receivable, net of allowance of 15.1 and 11.0
                694,500,000                                             
        other intangibles, net of accumulated amortization of 2,589.3 and 2,268.6
                3,546,300,000                                             
        trade accounts receivable, net of allowance of 12.0 and 11.0
                 672,800,000                                            
        other intangibles, net of accumulated amortization of 2,496.0 and 2,268.6
                 3,610,100,000                                            
        trade accounts receivable, net of allowance of 11.2 and 11.0
                  652,600,000                                           
        other intangibles, net of accumulated amortization of 2,380.1 and 2,268.6
                  3,636,700,000                                           
        trade accounts receivable, net of allowance of 11.0 and 10.7
                   602,200,000                                          
        other intangibles, net of accumulated amortization of 2,268.6 and 1,908.9
                   3,675,500,000                                          
        trade accounts receivable, net of allowance of 10.9 and 10.7
                    634,800,000                                         
        current assets of discontinued operations
                    21,400,000 27,000,000             55,800,000 60,800,000 72,700,000 70,400,000                        
        other intangibles, net of accumulated amortization of 2,144.4 and 1,908.9
                    3,701,600,000                                         
        other assets of discontinued operations
                    125,000,000 123,600,000                                        
        current liabilities of discontinued operations
                    11,100,000 8,800,000             20,900,000 22,800,000 21,300,000 9,500,000                        
        other liabilities of discontinued operations
                    100,000 400,000                                        
        trade accounts receivable, net of allowance of 11.2 and 10.7
                     636,300,000                                        
        other intangibles, net of accumulated amortization of 2,075.1 and 1,908.9
                     3,815,100,000                                        
        trade accounts receivable, net of allowance of 13.3 and 10.7
                      588,900,000                                       
        other intangibles, net of accumulated amortization of 2,013.1 and 1,908.9
                      3,704,500,000                                       
        trade accounts receivable, net of allowance of 10.7 and 17.1
                       558,000,000                                      
        other intangibles, net of accumulated amortization of 1,908.9 and 1,659.1
                       3,770,600,000                                      
        trade accounts receivable, net of allowance of 23.9 and 26.6
                        513,600,000                                     
        other intangibles, net of accumulated amortization of 1,945.8 and 1,752.2
                        2,161,200,000                                     
        trade accounts receivable, net of allowance of 24.8 and 26.6
                         511,800,000                                    
        other intangibles, net of accumulated amortization of 1,885.4 and 1,752.2
                         2,211,300,000                                    
        trade accounts receivable, net of allowance of 26.9 and 26.6
                          488,100,000                                   
        other intangibles, net of accumulated amortization of 1,799.8 and 1,752.2
                          2,242,700,000                                   
        trade accounts receivable, net of allowance of 26.6 and 19.0
                           453,700,000                                  
        other intangibles, net of accumulated amortization of 1,752.2 and 1,482.1
                           2,284,600,000                                  
        trade accounts receivable, net of allowance of 25.3 and 19.0
                            468,000,000                                 
        other intangibles, net of accumulated amortization of 1,660.8 and 1,482.1
                            2,235,700,000                                 
        trade accounts receivable, net of allowance of 26.0 and 19.0
                             433,100,000                                
        other intangibles, net of accumulated amortization of 1,589.9 and 1,482.1
                             2,247,200,000                                
        trade accounts receivable, net of allowance of 23.2 and 19.0
                              468,000,000                               
        other intangibles, net of accumulated amortization of 1,524.3 and 1,482.1
                              2,287,100,000                               
        trade accounts receivable, net of allowance of 19.0 and 13.5
                               443,900,000                              
        other intangibles, net of accumulated amortization of 1,482.1 and 1,206.7
                               2,391,900,000                              
        noncontrolling interest
                               94,000,000    92,500,000    95,900,000    110,200,000                  
        trade accounts receivable, net of allowance of 18.8 and 13.5
                                458,200,000                             
        other intangibles, net of accumulated amortization of 1,405.3 and 1,206.7
                                2,381,000,000                             
        trade accounts receivable, net of allowance of 16.3 and 13.5
                                 489,200,000                            
        other intangibles, net of accumulated amortization of 1,347.0 and 1,206.7
                                 2,449,400,000                            
        trade accounts receivable, net of allowance of 14.1 and 13.5
                                  470,000,000                           
        other intangibles, net of accumulated amortization of 1,280.5 and 1,206.7
                                  2,512,800,000                           
        trade accounts receivable, net of allowance of 13.5 and 9.9
                                   456,800,000                          
        other intangibles, net of accumulated amortization of 1,206.7 and 993.6
                                   2,548,100,000                          
        trade accounts receivable, net of allowance of 13.7 and 9.9
                                    426,100,000                         
        other intangibles, net of accumulated amortization of 1,141.4 and 993.6
                                    2,570,100,000                         
        trade accounts receivable, net of allowance of 11.8 and 9.9
                                     422,200,000                        
        other intangibles, net of accumulated amortization of 1,079.0 and 993.6
                                     2,518,100,000                        
        trade accounts receivable, net of allowance of 11.3 and 9.9
                                      344,000,000                       
        other intangibles, net of accumulated amortization of 1,040.4 and 993.6
                                      1,799,900,000                       
        trade accounts receivable, net of allowance of 9.9 and 6.2
                                       326,700,000                      
        other intangibles, net of accumulated amortization of 993.6 and 815.8
                                       1,825,800,000                      
        trade accounts receivable, net of allowance of 7.2 and 6.2
                                        318,900,000                     
        other intangibles, net of accumulated amortization of 942.1 and 815.8
                                        1,689,000,000                     
        accumulated deficit
                                        -107,800,000 -176,500,000 -241,500,000 -303,800,000 -353,300,000 -394,400,000 -411,700,000 -424,300,000 -443,500,000 -439,400,000 -436,800,000 -430,200,000 -417,100,000 -414,500,000 -432,400,000  -400,100,000     
        trade accounts receivable, net of allowance of 7.3 and 6.2
                                         290,700,000                    
        other intangibles, net of accumulated amortization of 901.9 and 815.8
                                         1,709,100,000                    
        trade accounts receivable, net of allowance of 6.6 and 6.2
                                          289,900,000                   
        other intangibles, net of accumulated amortization of 860.0 and 815.8
                                          1,737,800,000                   
        trade accounts receivable, net of allowance of 6.2 and 4.2
                                           277,900,000                  
        other intangibles, net of accumulated amortization of 815.8 and 615.3
                                           1,762,300,000                  
        redeemable noncontrolling interests
                                              66,500,000 2,900,000 13,100,000 15,200,000 13,000,000 23,400,000 16,100,000 17,800,000 17,500,000 17,600,000 18,500,000 20,400,000 22,200,000 14,700,000 18,300,000 
        trade accounts receivable, net of allowance of 6.5 and 4.2
                                            272,700,000                 
        other intangibles, net of accumulated amortization of 779.0 and 615.3
                                            1,829,600,000                 
        trade accounts receivable, net of allowance of 4.4 and 4.2
                                             256,500,000                
        other intangibles, net of accumulated amortization of 730.7 and 615.3
                                             1,820,900,000                
        trade accounts receivable, net of allowance of 3.7 and 4.2
                                              263,200,000               
        other intangibles, net of accumulated amortization of 672.7 and 615.3
                                              1,846,300,000               
        trade accounts receivable, net of allowance of 4.2 and 2.4
                                               228,300,000              
        other intangibles, net of accumulated amortization of 615.3 and 407.8
                                               1,770,100,000              
        trade accounts receivable, net of allowance of 2.8 and 2.4
                                                230,000,000             
        other intangibles, net of accumulated amortization of 562.9 and 407.8
                                                1,792,800,000             
        trade accounts receivable, net of allowance of 3.2 and 2.4
                                                 228,800,000            
        other intangibles, net of accumulated amortization of 512.9 and 407.8
                                                 1,849,600,000            
        trade accounts receivable, net of allowance of 3.0 and 2.4
                                                  211,700,000           
        other intangibles, net of accumulated amortization of 459.5 and 407.8
                                                  1,891,900,000           
        trade accounts receivable, net of allowance of 2.4 and 0.7
                                                   200,400,000          
        other intangibles, net of accumulated amortization of 407.8 and 227.5
                                                   1,939,600,000          
        accumulated other comprehensive income
                                                   -117,500,000    -73,200,000  -61,800,000 -40,700,000 -24,400,000 -10,300,000 
        trade accounts receivable, net of allowance of 1.0 and 0.7
                                                    196,300,000  182,100,000       
        other intangibles, net of accumulated amortization of 356.8 and 227.5
                                                    1,929,800,000         
        total transunion holding company, inc. stockholders’ equity
                                                    604,200,000 629,700,000 606,500,000 627,900,000 648,900,000 653,000,000 680,200,000 702,800,000 1,094,500,000 
        trade accounts receivable, net of allowance of 1.1 and 0.7
                                                     193,000,000        
        marketable securities
                                                     13,900,000 10,800,000 9,900,000      
        other intangibles, net of accumulated amortization of 308.5 and 227.5
                                                     1,974,200,000        
        other intangibles, net of accumulated amortization of 266.5 and 227.5
                                                      1,903,600,000       
        trade accounts receivable, net of allowance of 0.7 and 1.7
                                                       165,000,000      
        other intangibles, net of accumulated amortization of 227.5 and 86.6
                                                       1,934,000,000      
        trade accounts receivable, net of allowance of 0.9 and 1.7
                                                        183,700,000     
        other marketable securities
                                                        11,600,000 10,900,000 10,800,000 11,400,000 11,100,000 
        other intangibles, net of accumulated amortization of 190.6 and 86.6
                                                        1,882,200,000     
        trade accounts receivable, net of allowance of 1.0 and 1.7
                                                         179,400,000    
        other intangibles, net of accumulated amortization of 153.7 million and 86.6 million
                                                         1,848,900,000    
        trade accounts receivable, net of allowance of 0.8 and 1.7
                                                          180,800,000   
        other intangibles
                                                          1,886,600,000 1,911,600,000 1,916,100,000 
        trade accounts receivable, net of allowance of 1.7
                                                           163,600,000  
        trade accounts receivable, net of allowance of 1.4
                                                            177,700,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 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 2012-09-30 
                                                              
          cash flows from operating activities:
                                                              
          net income
        400,400,000 104,600,000 100,200,000 112,400,000 152,700,000 70,700,000 71,900,000 89,700,000 70,000,000 90,500,000 -395,400,000 57,200,000 56,900,000 50,400,000 82,700,000 99,600,000 52,000,000 1,020,500,000 118,200,000 132,900,000 130,600,000 104,600,000 106,700,000 70,000,000 74,300,000 86,400,000 88,300,000 103,900,000 73,400,000 105,500,000 49,400,000 57,200,000 75,400,000 248,000,000 71,800,000 67,300,000 64,500,000 52,600,000 44,500,000 19,700,000 14,600,000 21,100,000 -1,000,000 -400,000 -4,400,000  -100,000 19,900,000 -13,500,000 -15,700,000 -1,200,000 -6,300,000 -5,000,000 2,700,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                              
          depreciation and amortization
        152,300,000 147,600,000 145,600,000 142,700,000 138,900,000 137,300,000 133,600,000 132,900,000 134,000,000 133,300,000 131,300,000 130,100,000 129,700,000 130,000,000 129,600,000 130,600,000 128,800,000 88,400,000 95,900,000 98,400,000 94,300,000 94,500,000 92,200,000 90,900,000 90,300,000 90,700,000 88,700,000 89,200,000 93,500,000 88,100,000 84,200,000 68,000,000 66,600,000 61,800,000 59,900,000 58,300,000 58,000,000 55,600,000 63,100,000 74,000,000 72,500,000 69,200,000 71,500,000 68,600,000 69,100,000 67,100,000 67,300,000 55,300,000 51,500,000 48,300,000 48,000,000 45,200,000 45,300,000 72,100,000 
          deferred taxes
        -16,000,000 -2,300,000 27,600,000 -31,600,000 -22,500,000 -63,200,000 -30,500,000 -36,500,000 -27,100,000 -61,400,000 -30,000,000 -43,900,000 -27,400,000 -28,200,000 -28,100,000 -28,100,000 -4,500,000 -30,400,000 -10,600,000 19,800,000 4,000,000 -10,100,000 -14,000,000 -10,600,000 -600,000 -12,800,000 -9,800,000 300,000 -200,000 -51,100,000 -9,000,000 -9,100,000 200,000 -198,700,000 4,200,000 -4,300,000 -14,000,000 -8,900,000 -9,200,000 -8,700,000 4,600,000 -1,500,000 -4,600,000 -1,700,000 -9,500,000 -18,000,000 -9,300,000 10,500,000 -4,000,000 -4,100,000 -2,000,000 -6,300,000 -3,800,000 -5,100,000 
          stock-based compensation
        37,500,000 38,700,000 36,400,000 40,200,000 30,300,000 35,600,000 33,800,000 27,700,000 24,100,000 27,400,000 27,000,000 23,800,000 22,100,000 20,800,000 19,700,000 21,400,000 20,900,000 17,600,000 17,000,000 16,700,000 17,900,000 17,300,000 8,100,000 16,600,000 4,900,000 21,300,000 13,100,000 6,700,000 9,900,000 21,000,000 15,600,000 11,800,000 9,500,000 10,000,000 7,200,000 7,900,000 8,000,000 9,800,000 5,700,000 5,200,000 3,700,000 2,300,000 1,500,000 2,800,000 2,400,000 1,700,000 2,100,000 2,200,000 2,000,000 1,500,000 1,300,000 1,600,000 1,900,000 1,200,000 
          gain on acquisition of affiliate
        -225,500,000                                                      
          other
        -17,300,000 12,300,000 2,300,000 13,900,000 15,200,000 16,400,000 -8,000,000 22,400,000 3,500,000 12,900,000 -9,700,000 22,900,000 -100,000 12,000,000 -600,000 10,500,000 700,000 400,000 -2,100,000 2,600,000 500,000 3,600,000 -1,500,000 1,500,000 2,300,000 600,000 1,600,000 1,100,000 100,000 1,100,000 1,200,000 2,000,000 -200,000 -1,300,000 1,800,000 -1,600,000 -2,300,000 -3,700,000 -2,300,000 -700,000 1,600,000 500,000 600,000 100,000 200,000 700,000 100,000 900,000 -400,000 -500,000 -300,000 100,000 -200,000 2,700,000 
          changes in assets and liabilities:
                                                              
          trade accounts receivable
        -139,500,000 -13,500,000 -7,500,000 -9,500,000 -88,900,000 -16,700,000 -17,600,000 -10,600,000 -60,700,000 -30,900,000 -27,200,000 -20,300,000 -56,700,000 35,200,000 -11,700,000 -28,400,000 -32,600,000 27,000,000 -4,900,000 -23,000,000 -35,300,000 19,800,000 -30,900,000 28,100,000 -40,600,000 20,500,000 19,400,000 -21,200,000 -11,400,000 -34,400,000 -32,800,000 -28,000,000 -18,600,000 -4,600,000 -28,700,000 -700,000 -10,700,000 -8,300,000 -11,300,000 7,900,000 -30,800,000 -900,000 -5,600,000 -18,200,000 -14,500,000 -5,900,000 -6,000,000 -6,000,000 -18,400,000 11,600,000 -2,500,000 -1,800,000 -10,400,000 -14,200,000 
          other current and long-term assets
        21,100,000 -9,900,000 4,200,000 3,800,000 14,600,000 -13,700,000 1,400,000 43,700,000 29,700,000 -13,600,000 -16,600,000 -12,200,000 13,300,000 9,200,000 -4,100,000 -36,100,000 19,600,000 -6,700,000 -10,400,000 -23,400,000 8,900,000 -2,100,000 -7,000,000 -500,000 8,900,000 -600,000 -18,700,000 -16,100,000 22,600,000 11,900,000 -15,200,000 -2,200,000 -22,000,000 4,400,000 -30,900,000 -11,300,000 -100,000 22,800,000 -24,100,000 -4,500,000 -2,000,000 8,600,000 800,000 6,400,000 -8,600,000 9,900,000 -800,000 1,500,000 -11,800,000 2,100,000 -2,900,000 4,000,000 -76,000,000 
          trade accounts payable
        26,700,000 -18,800,000 13,000,000 7,400,000 29,700,000 -5,000,000 -9,500,000 25,000,000 28,700,000 -23,400,000 -50,400,000 22,400,000 44,900,000 -300,000 -26,800,000 16,700,000 -10,300,000 10,100,000 22,800,000 5,600,000 7,200,000 11,400,000 -21,500,000 16,500,000 12,300,000 -5,100,000 4,700,000   12,400,000 -17,600,000 29,600,000 -3,700,000 -500,000 6,700,000 4,400,000 -900,000 4,400,000 -3,700,000 -600,000 2,800,000 5,800,000 -10,900,000 5,900,000 500,000 3,200,000 -9,100,000 11,200,000 800,000 7,300,000 -10,600,000 1,500,000 7,700,000 -3,800,000 
          other current and long-term liabilities
        -155,500,000 50,900,000 16,600,000 11,600,000 -206,700,000 59,500,000 22,400,000 43,000,000 -158,200,000 100,100,000 22,500,000 38,700,000 -80,900,000 13,500,000 12,600,000 -345,200,000 -116,200,000 -37,300,000 62,900,000 -7,500,000 -51,600,000 -10,700,000 40,600,000 36,800,000 -20,300,000 -32,900,000 70,100,000 28,600,000 -29,500,000 -23,000,000 73,800,000 -2,400,000 -27,800,000 18,400,000 41,800,000 6,800,000 -29,500,000 9,400,000 16,400,000 29,600,000 -23,500,000 7,500,000 -9,700,000 37,300,000 -36,700,000 12,700,000 10,300,000 3,600,000 -20,200,000 1,000,000 32,300,000 1,400,000 -20,600,000 7,300,000 
          cash from operating activities
        84,200,000 319,500,000 324,300,000 291,300,000 52,500,000 254,000,000 229,300,000 295,200,000 54,000,000 201,800,000 150,900,000 215,300,000 77,400,000 221,800,000 190,600,000 -126,400,000 11,200,000 148,100,000 279,700,000 235,700,000 144,800,000 229,200,000 178,800,000 253,900,000 125,500,000 196,300,000 279,400,000 177,200,000 123,800,000 146,300,000 178,900,000 129,500,000 101,000,000 119,100,000 174,700,000 106,900,000 67,300,000 113,800,000 126,600,000 107,800,000 41,700,000 102,900,000 89,700,000 100,000,000 16,500,000 44,200,000 64,500,000 51,700,000 -6,100,000 32,300,000 63,800,000 33,800,000 13,500,000 -17,900,000 
          cash flows from investing activities:
                                                              
          capital expenditures
        -65,200,000 -96,700,000 -83,900,000 -77,000,000 -68,400,000 -117,100,000 -68,000,000 -68,300,000 -62,400,000 -97,500,000 -69,600,000 -77,100,000 -66,500,000 -105,700,000 -71,200,000 -62,700,000 -58,600,000 -66,100,000 -61,000,000 -53,900,000 -43,200,000 -82,400,000 -44,100,000 -45,600,000 -42,000,000 -66,400,000 -44,100,000 -46,100,000 -41,900,000 -61,800,000 -47,900,000 -43,500,000 -26,900,000 -44,300,000 -33,000,000 -32,000,000 -26,000,000 -38,500,000 -30,600,000 -24,000,000 -30,900,000 -35,900,000 -28,000,000 -38,200,000 -30,100,000 -37,500,000 -43,400,000 -35,500,000 -38,800,000 -27,600,000 -23,900,000 -13,800,000 -16,400,000 -26,200,000 
          free cash flows
        19,000,000 222,800,000 240,400,000 214,300,000 -15,900,000 136,900,000 161,300,000 226,900,000 -8,400,000 104,300,000 81,300,000 138,200,000 10,900,000 116,100,000 119,400,000 -189,100,000 -47,400,000 82,000,000 218,700,000 181,800,000 101,600,000 146,800,000 134,700,000 208,300,000 83,500,000 129,900,000 235,300,000 131,100,000 81,900,000 84,500,000 131,000,000 86,000,000 74,100,000 74,800,000 141,700,000 74,900,000 41,300,000 75,300,000 96,000,000 83,800,000 10,800,000 67,000,000 61,700,000 61,800,000 -13,600,000 6,700,000 21,100,000 16,200,000 -44,900,000 4,700,000 39,900,000 20,000,000 -2,900,000 -44,100,000 
          proceeds from sale/maturity of other investments
                             38,300,000 27,600,000 5,300,000 19,400,000                              
          investments in consolidated affiliates, net of cash acquired
        -578,600,000           2,300,000 -6,400,000                                        
          investments in nonconsolidated affiliates and notes receivable
        -1,000,000 -600,000 -5,000,000 -20,000,000                                                  
          proceeds from the sale of investments in nonconsolidated affiliates
        47,300,000     3,900,000                                                
          cash from investing activities
        -586,700,000 -24,600,000 -83,400,000 -137,100,000 -86,600,000 -112,300,000 -68,600,000 -64,100,000 -62,400,000 -88,400,000 -44,400,000   12,700,000 -59,700,000 -585,900,000 -91,000,000 -2,004,900,000 -61,900,000 -74,200,000 -71,900,000 -113,700,000 -37,000,000 -91,000,000 -25,500,000 -48,800,000 -47,300,000 -56,900,000 -50,900,000 -90,500,000 -45,500,000 -1,851,200,000 -30,500,000 -331,600,000 -44,700,000 -28,300,000 -76,200,000 -54,000,000 -118,400,000 -162,400,000 -161,000,000 -79,000,000 -41,200,000 -42,000,000 -34,900,000 -111,200,000 -43,800,000 -51,100,000 -69,900,000 -174,500,000 -138,100,000 -13,700,000 -40,700,000 -1,524,400,000 
          cash flows from financing activities:
                                                              
          proceeds from revolving credit facility
        520,000,000                                                      
          repayments of debt
        -17,700,000 -17,600,000 -17,700,000 -25,500,000 -17,700,000 -57,900,000 -41,600,000 -84,800,000 -14,600,000 -339,100,000 -103,600,000 -103,700,000 -103,600,000 -228,600,000 -28,700,000 -28,700,000 -428,600,000 -13,300,000 -14,200,000 -13,700,000 -99,600,000 -163,800,000 -13,800,000 -17,400,000 -13,800,000 -75,100,000 -180,000,000 -115,100,000 -18,800,000 -75,000,000 -15,100,000 -12,700,000 -11,500,000 -7,500,000 -100,000 -10,600,000 -14,300,000 -11,300,000 -14,200,000 -11,800,000 -12,000,000  -13,200,000 -7,800,000 -6,600,000  -6,300,000 -6,600,000 -3,800,000 -3,200,000 -2,900,000 -3,400,000 -2,400,000 -4,800,000 
          debt financing fees
        -700,000     -3,000,000 -8,800,000 -4,700,000                     -200,000   -7,600,000 -5,000,000 -300,000 -300,000 -3,100,000  -9,500,000      -200,000 -1,100,000 -400,000   -16,800,000 
          dividends to shareholders
        -25,000,000 -22,200,000 -23,200,000 -22,500,000 -22,600,000 -21,000,000 -20,300,000 -20,600,000 -20,800,000 -20,400,000 -20,500,000 -20,300,000 -20,600,000 -20,300,000 -20,300,000 -18,200,000 -19,000,000 -18,300,000 -18,200,000 -18,300,000 -15,000,000 -14,300,000 -14,300,000 -14,300,000 -14,700,000  -14,100,000 -14,100,000 -14,400,000  -13,900,000                        
          proceeds from issuance of common stock and exercise of stock options
        9,800,000     400,000 12,100,000 12,400,000 13,300,000 9,800,000 9,800,000 200,000 8,700,000 700,000 10,100,000 1,000,000 10,100,000 1,200,000 8,800,000 2,000,000 10,900,000 2,000,000 9,600,000 2,700,000 10,100,000 2,900,000 9,200,000 4,700,000 9,400,000 5,000,000 5,800,000 6,200,000 10,100,000 1,300,000 2,400,000 1,400,000 900,000  200,000 1,200,000 800,000          
          employee taxes paid on restricted stock units recorded as treasury stock
        -20,700,000 -1,800,000 -26,500,000 -1,900,000 -5,500,000 -1,600,000 -18,700,000 -800,000 -10,600,000 -800,000 -7,700,000 -2,300,000 -7,600,000 -2,500,000 -800,000 -500,000 -28,700,000 -2,000,000 -800,000 -6,300,000 -27,700,000 -600,000 -2,400,000 -1,000,000 -32,100,000 -1,500,000 -800,000 -100,000 -36,800,000                          
          repurchases of common stock
        -12,100,000                                                      
          dividends paid to shareholders of acquired affiliate
        -52,600,000                                                      
          cash from financing activities
        400,900,000 -193,700,000 -173,600,000 -86,700,000 -40,600,000 -89,200,000 -69,400,000 -118,800,000 -31,300,000      -42,100,000 -54,200,000 -467,600,000 2,993,800,000 -29,000,000 -70,300,000 -132,200,000 -187,000,000 -23,100,000 -37,100,000 -49,700,000 -113,700,000 -185,700,000 -127,400,000 -59,900,000 -93,700,000 -98,000,000 1,764,400,000 -32,500,000 75,200,000 -18,900,000 -66,800,000 -43,400,000 -14,500,000 -12,700,000 45,100,000 135,900,000  -675,000,000 613,000,000 29,100,000  -8,800,000 33,000,000 24,800,000 137,400,000 62,100,000 -4,500,000 -7,700,000 1,670,100,000 
          effect of exchange rate changes on cash and cash equivalents
        -19,500,000 2,500,000 -4,900,000 10,100,000 5,100,000 -16,200,000 8,700,000 -2,700,000 -2,900,000 5,400,000 -6,500,000 2,400,000 1,900,000 11,300,000 -14,500,000 -8,500,000 1,800,000 -3,100,000 -6,200,000 2,000,000 -700,000 10,500,000 3,100,000 700,000 -18,700,000 4,400,000 -5,200,000 900,000 500,000 -1,300,000 -1,100,000 -4,700,000 500,000 -200,000 200,000 -1,000,000 1,300,000 -1,000,000 1,100,000 500,000 500,000  -2,800,000 -1,600,000  -2,000,000 200,000 -600,000 -1,500,000 -500,000 -2,800,000 -2,000,000 -600,000 
          net change in cash and cash equivalents
        -121,100,000 103,700,000 62,400,000 77,600,000 -69,600,000 36,300,000 100,000,000 109,600,000 -42,600,000 55,300,000 -21,100,000 3,000,000 -146,300,000 -10,800,000 74,300,000 -775,000,000 -545,600,000 1,133,900,000 182,600,000 93,200,000 -60,000,000 -61,000,000 121,800,000 126,500,000 31,600,000 38,200,000 41,200,000 -6,200,000 13,500,000 -39,200,000 34,300,000 38,000,000 38,500,000 -137,500,000 111,300,000 10,800,000 -51,000,000 44,300,000 -3,400,000 -9,000,000 17,100,000  -629,300,000 671,000,000 9,100,000  9,900,000 33,800,000 -51,800,000 -6,300,000 -12,700,000 12,800,000 -36,900,000 127,200,000 
          cash and cash equivalents, beginning of period
        853,600,000 679,500,000 476,200,000 585,300,000 1,842,400,000 -300,000 493,000,000 274,100,000 187,400,000 115,800,000 182,200,000 133,200,000  77,900,000  111,200,000 154,300,000  
          cash and cash equivalents, end of period
        732,500,000 103,700,000 62,400,000 77,600,000 609,900,000 36,300,000 100,000,000 109,600,000 433,600,000 55,300,000 -21,100,000 3,000,000 439,000,000 -10,800,000 74,300,000 -775,000,000 1,296,800,000 1,133,600,000 182,600,000 93,200,000 433,000,000 -61,000,000 121,800,000 126,500,000 305,700,000 38,200,000 41,200,000 -6,200,000 200,900,000 -39,200,000 34,300,000 38,000,000 154,300,000 -137,500,000 111,300,000 10,800,000 131,200,000 44,300,000 -3,400,000 -9,000,000 150,300,000  -629,300,000 671,000,000 87,000,000  9,900,000 33,800,000 59,400,000 -6,300,000 -12,700,000 12,800,000 117,400,000 127,200,000 
          less: discontinued operations, net of tax
                 -1,400,000 900,000 -100,000 -100,000 19,700,000   -400,000                                      
          income from continuing operations
             70,700,000 71,900,000 89,700,000 70,000,000 90,500,000 -394,900,000 57,300,000 57,000,000 35,300,000 80,300,000 99,400,000 52,300,000     104,600,000 106,700,000 70,000,000 74,300,000 86,400,000 88,300,000 107,000,000 74,900,000 105,500,000 50,900,000                        
          goodwill impairment
                 -81,000,000                                             
          loss on repayment of loans
             4,800,000 1,900,000 700,000 4,600,000 900,000 1,100,000 1,000,000 2,900,000 6,500,000                                      
          loss on early termination of lease
                                                             
          cash from operating activities of continuing operations
             254,000,000 229,300,000   201,800,000 150,900,000 215,500,000 77,400,000 230,200,000 186,200,000 -127,000,000 11,600,000     229,200,000 178,800,000 253,900,000 125,500,000 196,300,000 279,400,000 182,100,000 126,200,000 149,100,000 179,800,000                        
          cash from operating activities of discontinued operations
                   -8,400,000 4,400,000 600,000 -400,000         -4,900,000 -2,400,000 -2,800,000                         
          purchases of other investments
                 -9,800,000 -10,900,000 -9,700,000 -23,100,000 -42,200,000 -27,600,000 -23,300,000 -53,000,000 -13,200,000 -32,600,000 -1,300,000 -19,800,000 -8,500,000 -14,300,000 -50,500,000 -200,000 -11,600,000 -5,400,000 -14,400,000 -9,100,000 -8,600,000 -6,900,000 -7,200,000 -8,100,000 -6,100,000 -9,100,000 -26,900,000 -32,900,000 -14,400,000 -8,800,000 -8,500,000 -2,700,000 -1,200,000 -4,400,000 -7,200,000 -7,700,000         
          proceeds related to disposal of discontinued operations
                                                              
          proceeds from note receivable
                                                              
          proceeds from term loans
             858,200,000 670,800,000 264,100,000                                              
          repayments of term loans
             -858,200,000 -670,800,000 -257,100,000                                              
          distributions to noncontrolling interests
         -2,700,000 -4,400,000   -6,100,000 -900,000   -8,000,000 -2,600,000   -5,200,000 -2,100,000   -4,500,000 -5,900,000   -9,500,000    -2,700,000 -400,000   -7,300,000 -2,700,000   -7,200,000 -2,800,000   -6,000,000 -2,300,000 -600,000 -400,000  -2,200,000 -1,800,000 -100,000  -3,000,000 -900,000 -500,000 -5,200,000 -1,700,000    
          supplemental disclosure of cash flow information:
                                                              
          cash paid during the period for:
                                                              
          interest
                                                              
          income taxes, net of refunds
                                                              
          proceeds from sale/maturities of other investments
          200,000      41,800,000 4,600,000 17,500,000  42,800,000 5,400,000 37,100,000  23,700,000 2,600,000 1,500,000                                  
          proceeds from issuance of common stock
          12,000,000 -100,000 10,600,000                                           1,000,000 700,000 4,300,000 1,200,000   1,094,500,000 
          repurchase of common stock
          -113,800,000 -33,400,000 -5,400,000                                                  
          investments in nonconsolidated affiliates
             -1,500,000 -3,200,000 -1,200,000  -5,000,000 -31,900,000                                          
          cash from investing activities of continuing operations
                 -88,400,000 -44,400,000 -82,500,000 -103,600,000 15,900,000 -58,500,000 -585,200,000 -91,000,000     -113,700,000 -37,000,000 -91,000,000 -25,500,000 -48,800,000   -50,900,000 -90,500,000                         
          cash from investing activities of discontinued operations
                     -3,200,000 -1,200,000                                       
          payment of contingent consideration
                                                        
          payment related to disposal of discontinued operations
                                                              
          gain on investments
               -1,700,000 -4,700,000                                              
          investments in nonconsolidated affiliates and purchase of convertible notes
                     -1,400,000 -14,800,000                                      
          cash from financing activities of continuing operations
                 -63,500,000 -121,100,000 -132,200,000 -122,000,000 -256,600,000 -42,100,000 -54,200,000 -467,600,000                                      
          proceeds from disposal of discontinued operations
                                                              
          provision for losses on trade accounts receivable
                      2,000,000 200,000 2,100,000 -3,300,000 100,000 -500,000 1,100,000 1,700,000 1,100,000 4,100,000 6,200,000 2,100,000 2,300,000 3,800,000 1,800,000 2,300,000 2,900,000 1,600,000 1,800,000 3,300,000 1,500,000 600,000 1,200,000 1,000,000 1,500,000 1,100,000 700,000 1,000,000 600,000    500,000 300,000 600,000  300,000    
          cash from financing activities of discontinued operations
                                                              
          net gain on investments in affiliated companies and other investments
                                                              
          net loss on investments in affiliated companies and other investments
                                                              
          investments in nonconsolidated affiliates and purchases of convertible notes
                          -10,200,000                                    
          proceeds from disposals of investments and assets held for sale
                                                              
          net loss on investments in affiliated companies
                                                              
          net gain on investments in affiliated companies and assets of businesses held for sale
                            -500,000                                  
          purchases of convertible notes and investments in nonconsolidated affiliates
                            -10,000,000                                  
          add: loss from discontinued operations, net of tax
                                 3,000,000 1,600,000 100,000                         
          loss on debt financing transactions
                                 13,500,000 700,000   100,000                        
          net loss on investments in affiliated companies and assets of businesses held for sale
                                                              
          acquisitions and purchases of noncontrolling interests, net of cash acquired
                             -59,400,000 -7,100,000   -100,000 -300,000   -28,000,000 800,000 -1,801,100,000 -100,000 -271,900,000 -12,000,000 -58,700,000 -11,100,000 -74,900,000 -141,500,000 -129,100,000 -42,100,000 -14,500,000 -3,900,000 -9,900,000 -65,100,000        
          proceeds from disposals of assets held for sale, net of cash on hand
                                                              
          proceeds from refinance of senior secured term loans
                                                              
          payments from refinance of senior secured term loans
                                                              
          proceeds from senior secured revolving line of credit
                                       110,000,000 65,000,000 40,000,000 145,000,000  35,000,000    28,500,000      
          payments of senior secured revolving line of credit
                                     -75,000,000 -105,000,000 -30,000,000 -25,000,000 -45,000,000    -145,000,000             
          net loss on investments in affiliated companies and assets-held-for sale
                                                             
          net (earnings)/dividends, from equity method investments
                              -900,000                                
          amortization of discount and deferred financing fees
                              1,000,000 900,000 1,000,000 1,300,000 1,500,000 1,600,000 1,600,000 1,600,000 1,600,000 900,000 700,000 700,000 700,000 600,000 700,000 800,000 900,000                
          proceeds from disposals of assets held for sale
                              1,600,000                              
          net (gain) on assets-held-for sale and impairment of investments in affiliated companies
                                -1,800,000                              
          equity in net income of affiliates, net of dividends
                                -2,000,000 -1,700,000 -2,600,000 4,700,000 -3,300,000 3,000,000 -2,900,000 1,400,000 -1,600,000 3,800,000 -2,300,000 -1,800,000 -1,400,000 -500,000 -1,800,000 3,200,000 -1,500,000 -500,000 3,400,000 -2,100,000 -900,000 -2,300,000 -1,500,000 3,800,000 -3,300,000 -2,700,000   -3,100,000 3,000,000 
          investment in non-consolidated affiliate
                                -5,200,000                              
          net (gain) impairment from adjustments to the carrying value of investments in nonconsolidated affiliates and assets-held-for-sale
                                                              
          proceeds from sale of other investments
                                 17,700,000 7,700,000 3,700,000 6,800,000 8,400,000 11,400,000 1,100,000 3,400,000 4,800,000 7,500,000 11,200,000 35,700,000 27,200,000 11,300,000 10,900,000 8,800,000   4,400,000 3,900,000 3,500,000         
          proceeds from disposals of discontinued operations, net of cash on hand
                                                            
          dividends to stockholders
                                                              
          treasury stock purchased
                                         -65,200,000 -68,300,000                  
          amortization and loss on fair value of hedge instrument
                                      -700,000  200,000    400,000 800,000              
          net (gain) impairment of investments in nonconsolidated affiliates and assets-held-for-sale
                                                              
          payment of contingent obligation
                                  -400,000    -100,000 -2,600,000 -1,900,000 -5,900,000 -200,000                
          proceeds from sale of trading securities
                                  200,000 3,300,000 1,800,000 500,000 1,500,000 1,000,000 900,000 400,000 300,000 300,000 400,000 200,000 900,000 2,200,000 100,000 2,100,000  
          purchases of trading securities
                                  -200,000 -200,000 -1,500,000 -100,000 -200,000 -300,000 -1,500,000 -200,000 -100,000 -200,000 -1,300,000 -200,000 -100,000 -100,000 -1,100,000 -200,000 -100,000 -200,000 -1,000,000 -100,000         
          proceeds from senior secured term loan b-4
                                                            
          proceeds from senior secured term loan a-2
                                                             
          net (gain) impairment from adjustments to the carrying value of investments in nonconsolidated affiliates
                                                              
          impairment of cost method investment
                                    5,300,000 100,000 -200,000 1,600,000             -400,000        
          amortization and loss on fair value of hedge instruments
                                                              
          acquisition-related deposits
                                         -12,500,000      -1,100,000 9,100,000 -4,700,000        
          cash flows from financing activities
                                                              
          excess tax benefit
                                             2,400,000 1,700,000 1,700,000 500,000              
          noncash investing activities:
                                                              
          property and equipment acquired through capital lease obligations
                                                              
          noncash financing activities:
                                                              
          finance arrangements
                                                              
          cash from discontinued operations
                                                              
          proceeds from senior secured term loan a-3
                                                              
          loss on refinancing transaction
                                                              
          loss on refinancing transactions
                                                              
          proceeds from senior secured term loan b
                                             150,000,000             
          extinguishment of senior secured term loan b
                                                             
          proceeds from senior secured term loan a
                                                          
          extinguishment of 9.625% and 8.125% senior notes
                                                              
          termination of interest rate swaps
                                                              
          proceeds from initial public offering
                                                             
          underwriter fees and other costs on initial public offering
                                                  -300,000            
          net loss on refinancing transaction
                                           5,000,000                  
          net loss on refinancing transactions
                                                  33,800,000            
          gain on fair value adjustment of cost and equity method investment
                                                              
          extinguishment of 11.375% senior unsecured notes
                                                             
          payment on senior secured revolving line of credit
                                                              
          treasury stock purchases
                                                      -100,000   -400,000 -1,000,000 -2,000,000 -700,000 
          amortization of discount on term loans
                                                400,000              
          amortization of deferred financing fees
                                                300,000 300,000 600,000 2,000,000 2,000,000 1,900,000 1,900,000        
          net loss on debt refinancing transactions
                                                              
          amortization and net loss on fair value of hedge instruments
                                                              
          amortization of senior notes purchase accounting fair value adjustment and note discount
                                                 400,000 300,000 300,000 200,000 200,000 200,000 -1,800,000 -4,400,000 -4,400,000 -4,300,000 -4,300,000 -4,100,000  
          gains on sale of other assets
                                                              
          proceeds from sale of other assets
                                                        100,000 4,200,000  
          gain on fair value adjustment of equity method investments
                                                              
          impairment of cost method investments
                                                              
          amortization and loss on fair value of interest rate swaps
                                                  600,000 -200,000 1,100,000          
          proceeds from sale of other investments and assets
                                                              
          proceeds from senior secured term loan
                                                            
          extinguishment of senior secured term loan
                                                            
          benefit from losses on trade accounts receivable
                                                    600,000          
          net loss
                                                              
          adjustments to reconcile net loss to net cash from operating activities:
                                                              
          net gain on 2014 refinancing transaction
                                                     -400,000        
          losses on sale of other assets
                                                              
          provision (reduction) for losses on trade accounts receivable
                                                             -2,200,000 
          change in control transaction fees
                                                              
          acquisition of transunion intermediate holdings, inc., net of cash acquired
                                                              
          gain on fair value adjustment of equity method investment
                                                             
          loss on fair value of interest rate swaps
                                                      -1,000,000        
          gain on sale of other assets
                                                              
          proceeds from revolving line of credit
                                                             
          repayment of revolving line of credit
                                                             
          investments in trading securities
                                                       -100,000 -1,700,000 -100,000 -300,000 -200,000 -1,200,000 -300,000 
          debt financing fees including prepayment premium on early termination of 11.375% notes
                                                              
          deferred financing fees
                                                        1,700,000 1,500,000 1,500,000 1,500,000 3,700,000 1,000,000 
          other acquisitions and purchases of noncontrolling interests, net of cash acquired
                                                        -39,100,000 -146,500,000 -105,500,000   -10,500,000 
          acquisition related deposits
                                                        8,800,000 -1,000,000     
          proceeds from senior secured credit facility
                                                          923,400,000  
          extinguishment of senior secured credit facility
                                                          -923,400,000  
          (gains) / losses on sale or exchange of assets
                                                              
          capital expenditures for property and equipment
                                                         -27,600,000 -23,900,000 -13,800,000 -16,400,000 -26,200,000 
          acquisition of transunion corp., net of cash acquired
                                                             -1,485,900,000 
          payment on revolving line of credit
                                                              
          proceeds from 9.625% notes
                                                              
          proceeds from 8.125% notes
                                                              
          dividends
                                                              
          proceeds from capital lease
                                                              
          loss on sale of assets
                                                           600,000 -1,900,000  
          acquisitions, net of cash acquired
                                                            -30,300,000  
          proceeds from 9.625% pik toggle notes
                                                              
          note proceeds deposited with escrow agent
                                                              
          amortization of senior notes purchase accounting fair value adjustment
                                                             -6,600,000 
          exchange of transunion holding company, inc. common stock for ownership interest in transunion corp.
                                                              
          cash paid from inception through december 31, 2012 for:
                                                              
          proceeds from senior unsecured pik toggle private placement notes
                                                             600,000,000