7Baggers

The Progressive Corporation
(NYSE:PGR) 

PGR stock logo

The Progressive Corporation, an insurance holding company, provides personal and commercial auto, personal residential and commercial property, general liability, and other specialty property-casualty insurance products and related services in the United States. It operates in three segments: Person...

Founded: 1937
Full Time Employees: 41,571
Sector: Financial Services
Industry: Insurance-Property & Casualty
Insurance‎Auto Insurance
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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 2023-09-30 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 2019-09-30 2019-06-30 2019-03-31 2018-09-30 2018-06-30 2018-03-31 2017-09-30 2017-06-30 2017-03-31 2016-09-30 2016-06-30 2016-03-31 2015-09-30 2015-06-30 2014-03-31 
                                           
      revenues
    		                                       
      net premiums earned
    		20,968,000,000 21,093,000,000 20,849,000,000 20,310,000,000 19,409,000,000 19,144,200,000 18,296,700,000 17,209,500,000 16,148,600,000 14,894,300,000 14,464,400,000 13,533,100,000 12,891,500,000 12,398,900,000 12,147,900,000 11,802,900,000 8,191,825,000 11,364,800,000 10,982,300,000 10,420,200,000 7,263,200,000 9,973,500,000 9,648,600,000 9,430,700,000 9,012,200,000 8,824,700,000 8,459,800,000 7,930,500,000 7,634,200,000 7,174,000,000 6,544,000,000 6,313,300,000 6,026,700,000 5,723,400,000 5,561,800,000 5,317,400,000 5,070,600,000 4,995,800,000 4,402,300,000 
      investment income
    		917,000,000 974,000,000 924,000,000 871,000,000 814,000,000 789,900,000 739,500,000 685,000,000 617,600,000 510,200,000 454,500,000 419,600,000 392,100,000 333,600,000 292,400,000 242,200,000 159,950,000 208,900,000 210,700,000 220,200,000 178,875,000 230,500,000 243,800,000 241,200,000 263,000,000 261,300,000 252,900,000 218,100,000 192,100,000 166,300,000 142,900,000 138,800,000 129,200,000 119,300,000 114,600,000 118,800,000 117,500,000 113,300,000 103,300,000 
      net realized gains on securities:
    		                                       
      net realized gains on security sales
    		96,000,000 216,000,000 12,000,000 19,000,000 1,000,000 -109,100,000 68,000,000 -226,400,000 -146,500,000 -66,200,000 135,100,000 -30,300,000 -233,500,000 -62,100,000 546,600,000 -54,500,000 151,950,000 53,900,000 410,100,000 143,800,000 192,775,000 195,900,000 260,000,000 315,200,000 71,700,000 67,500,000 46,100,000 108,400,000  107,000,000          
      net holding period gains on securities
    		-216,000,000 42,000,000 283,000,000 368,000,000 -213,000,000 57,400,000 219,400,000 100,100,000 302,100,000 -80,500,000 -6,000,000 104,400,000 162,800,000 -152,100,000 -1,722,200,000 -388,600,000 119,950,000 -15,900,000 54,200,000 441,500,000 24,675,000 336,700,000 630,800,000  31,800,000 112,400,000 392,700,000 95,800,000 53,500,000           
      total net realized gains on securities
    		-120,000,000 257,000,000 295,000,000 387,000,000 -212,000,000 -52,700,000 287,400,000 -126,300,000 155,600,000 -149,000,000 126,900,000 71,800,000 -72,800,000 -216,400,000 -1,177,700,000 -445,300,000 270,975,000 36,800,000 461,800,000 585,300,000 217,450,000 532,600,000 890,800,000  65,400,000 179,900,000 414,500,000 182,100,000 32,800,000   32,100,000 51,900,000  32,300,000 17,400,000  76,000,000 119,400,000 
      fees and other revenues
    		297,000,000 300,000,000 306,000,000 303,000,000 287,000,000 289,600,000 278,100,000 259,800,000 236,500,000 223,700,000 226,700,000 206,200,000 190,200,000 181,400,000 176,500,000 174,000,000 129,200,000 174,900,000 176,200,000 165,700,000 108,700,000 151,800,000 129,500,000 153,500,000 138,400,000 134,800,000 130,200,000 122,600,000 116,000,000 103,800,000 96,300,000 88,800,000 85,200,000 86,800,000 82,500,000 78,900,000 79,300,000 74,900,000 72,800,000 
      service revenues
    		126,000,000 122,000,000 138,000,000 133,000,000 111,000,000 105,200,000 117,300,000 106,300,000 84,200,000 81,400,000 81,000,000 72,500,000 68,800,000 82,700,000 80,100,000 67,700,000 50,525,000 73,800,000 74,500,000 53,800,000 42,350,000 58,800,000 59,000,000 51,600,000 51,500,000 50,000,000 42,600,000 42,500,000 42,900,000 34,200,000 33,300,000 32,700,000 28,500,000 26,200,000 26,500,000 25,000,000 23,100,000 23,300,000 9,800,000 
      total revenues
    		22,188,000,000 22,746,000,000 22,512,000,000 22,004,000,000 20,409,000,000 20,276,200,000 19,719,000,000 18,134,300,000 17,242,500,000 15,560,600,000 15,353,500,000 14,303,200,000 13,469,800,000 12,780,200,000 11,519,200,000 11,841,500,000 -31,683,500,000 11,859,200,000 11,905,500,000 11,445,200,000 11,415,800,000 10,947,200,000 10,971,700,000 9,323,400,000 9,530,500,000 9,450,700,000 9,300,000,000 8,495,800,000 8,018,000,000 7,430,100,000 6,791,800,000 6,605,700,000 6,321,700,000 5,935,000,000 5,819,300,000 5,557,500,000 5,273,800,000 5,283,300,000 4,707,600,000 
      yoy
    		8.72% 12.18% 14.16% 21.34% 18.36% 30.30% 28.43% 26.78% 28.01% 21.76% 33.29% 20.79% -142.51% 7.77% -3.24% 3.46% -377.54% 8.33% 8.51% 22.76% 19.78% 15.83% 17.98% 9.74% 18.86% 27.19% 36.93% 28.61% 26.83% 25.19% 16.71% 18.86% 19.87% 12.34% 23.62%     
      qoq
    		-2.45% 1.04% 2.31% 7.82% 0.65% 2.83% 8.74% 5.17% 10.81% 1.35% 7.34% 6.19% 5.40% 10.95% -2.72% -137.37% -367.16% -0.39% 4.02% 0.26% 4.28% -0.22% 17.68% -2.17% 0.84% 1.62% 9.47% 5.96% 7.91% 9.40% 2.82% 4.49% 6.52% 1.99% 4.71% 5.38% -0.18% 12.23%  
      expenses
    		                                       
      losses and loss adjustment expenses
    		13,827,000,000 14,105,000,000 13,445,000,000 13,605,000,000 12,804,000,000 12,982,800,000 12,510,300,000 12,595,300,000 10,971,600,000 11,387,900,000 12,170,100,000 10,624,000,000 9,824,500,000 10,018,700,000 9,421,100,000 8,858,400,000 6,191,900,000 9,250,700,000 8,406,400,000 7,110,500,000 4,547,425,000 6,713,100,000 5,321,400,000 6,155,200,000 6,426,300,000 6,138,100,000 5,759,000,000 5,523,100,000 5,375,300,000 4,870,800,000 5,050,500,000 4,614,900,000 4,263,400,000 4,398,200,000 4,243,000,000 3,913,400,000 3,654,300,000 3,617,200,000 3,205,900,000 
      policy acquisition costs
    		1,538,000,000 1,574,000,000 1,555,000,000 1,511,000,000 1,456,000,000 1,453,000,000 1,390,200,000 1,307,600,000 1,232,200,000 1,173,200,000 1,153,600,000 1,115,800,000 1,049,100,000 970,900,000 933,600,000 963,400,000 688,675,000 951,500,000 928,800,000 874,400,000 603,375,000 835,200,000 795,500,000 782,800,000 751,500,000 738,600,000 710,600,000 662,700,000 630,800,000 596,200,000 540,100,000 514,200,000 502,900,000 475,400,000 458,900,000 440,300,000 423,200,000 417,300,000 369,000,000 
      other underwriting expenses
    		3,048,000,000 2,906,000,000 3,015,000,000 2,689,000,000 2,719,000,000 2,680,900,000 2,669,900,000 2,179,800,000 1,931,400,000 1,420,700,000 1,431,700,000 1,857,900,000 1,425,700,000 1,496,400,000 1,431,200,000 1,506,300,000 1,076,500,000 1,384,400,000 1,440,500,000 1,481,100,000 1,044,925,000 1,330,900,000 1,438,900,000 1,409,900,000 1,240,300,000 1,231,500,000 1,171,200,000 1,095,900,000 1,046,900,000 980,200,000 877,700,000 845,000,000 845,600,000 739,600,000 766,800,000 755,800,000 707,500,000 662,400,000 610,400,000 
      investment expenses
    		8,000,000 8,000,000 10,000,000 9,000,000 7,000,000 8,800,000 7,200,000 7,300,000 5,700,000 7,200,000 6,100,000 5,500,000 6,900,000 5,800,000 5,900,000 5,700,000 4,625,000 6,600,000 6,300,000 5,600,000 3,625,000 4,700,000 4,500,000 5,300,000 5,900,000 6,200,000 6,200,000 5,800,000 6,200,000 6,000,000 5,800,000 6,600,000 5,600,000 4,800,000 5,300,000 4,800,000 4,900,000 5,700,000 4,100,000 
      service expenses
    		131,000,000 128,000,000 144,000,000 139,000,000 117,000,000 112,900,000 126,700,000 114,300,000 92,100,000 91,700,000 90,600,000 82,300,000 75,200,000 82,800,000 75,500,000 63,200,000 47,500,000 72,800,000 67,900,000 49,300,000 38,675,000 54,400,000 52,800,000 47,500,000 48,700,000 45,300,000 38,100,000 35,800,000 37,000,000 29,300,000 28,900,000 27,000,000 25,900,000 23,200,000 23,700,000 21,600,000 20,400,000 20,500,000 9,700,000 
      interest expense
    		70,000,000 69,000,000 70,000,000 69,000,000 70,000,000 69,900,000 69,900,000 69,600,000 69,600,000 69,700,000 65,700,000 63,300,000 63,100,000 63,100,000 63,000,000 54,300,000 53,000,000 54,200,000 56,400,000 56,400,000 40,200,000 56,400,000 56,400,000 48,000,000 47,500,000 47,400,000 47,400,000 42,000,000 41,700,000 36,800,000 37,400,000 43,400,000 36,800,000 35,300,000 34,300,000 34,200,000 34,500,000 34,900,000 26,700,000 
      total expenses
    		18,622,000,000 19,064,000,000 19,189,000,000 18,022,000,000 17,173,000,000 17,308,300,000 16,774,200,000 16,273,900,000 14,302,600,000 14,150,400,000 14,917,800,000 13,748,800,000 12,444,500,000 12,637,700,000 12,155,100,000 11,451,300,000 -31,968,200,000 11,720,200,000 10,906,300,000 9,577,300,000 6,543,825,000 9,023,700,000 8,702,900,000 8,448,700,000 8,520,200,000 8,207,100,000 7,732,500,000 7,365,300,000 7,137,900,000 6,519,300,000 6,540,400,000 6,051,100,000 5,680,200,000 5,676,500,000 5,532,000,000 5,170,100,000 4,844,800,000 4,758,000,000 4,225,800,000 
      net income
    		2,818,000,000 2,951,000,000 2,615,000,000 3,175,000,000 2,567,000,000 2,356,500,000 2,333,400,000 1,458,700,000 2,331,400,000 1,121,300,000 345,400,000 447,900,000 826,400,000 124,100,000 -542,900,000 313,900,000 597,150,000 118,500,000 790,100,000 1,480,000,000 1,005,075,000 1,530,800,000 1,790,400,000 699,100,000 843,600,000 979,000,000 1,082,800,000 930,200,000 701,200,000 729,800,000 214,800,000 372,700,000 430,300,000 205,500,000 194,900,000 258,700,000 286,500,000 368,500,000 321,300,000 
      yoy
    		9.78% 25.23% 12.07% 117.66% 10.11% 110.16% 575.56% 225.68% 182.12% 803.55% -163.62% 42.69% 38.39% 4.73% -168.71% -78.79% -40.59% -92.26% -55.87% 111.70% 19.14% 56.36% 65.35% -24.84% 20.31% 34.15% 404.10% 149.58% 62.96% 255.13% 10.21% 44.07% 50.19% -44.23% -39.34%     
      qoq
    		-4.51% 12.85% -17.64% 23.69% 8.93% 0.99% 59.96% -37.43% 107.92% 224.64% -22.88% -45.80% 565.91% -122.86% -272.95% -47.43% 403.92% -85.00% -46.61% 47.25% -34.34% -14.50% 156.10% -17.13% -13.83% -9.59% 16.41% 32.66% -3.92% 239.76% -42.37% -13.39% 109.39% 5.44% -24.66% -9.70% -22.25% 14.69%  
      net income margin %
    		12.70% 12.97% 11.62% 14.43% 12.58% 11.62% 11.83% 8.04% 13.52% 7.21% 2.25% 3.13% 6.14% 0.97% -4.71% 2.65% -1.88% 1.00% 6.64% 12.93% 8.80% 13.98% 16.32% 7.50% 8.85% 10.36% 11.64% 10.95% 8.75% 9.82% 3.16% 5.64% 6.81% 3.46% 3.35% 4.65% 5.43% 6.97% 6.83% 
      income before income taxes
    		3,566,000,000 3,682,000,000 3,323,000,000 3,982,000,000 3,236,000,000 2,967,900,000 2,944,800,000 1,860,400,000 2,939,900,000 1,410,200,000 435,700,000 554,400,000 1,025,300,000 142,500,000 -635,900,000 390,200,000 284,700,000 139,000,000 999,200,000 1,867,900,000 1,266,750,000 1,923,500,000 2,268,800,000 874,700,000 1,010,300,000 1,243,600,000 1,567,500,000 1,130,500,000 880,100,000 910,800,000 251,400,000 554,600,000 641,500,000 258,500,000 287,300,000 387,400,000 429,000,000 525,300,000 481,800,000 
      provision for income taxes
    		748,000,000 731,000,000 708,000,000 807,000,000 669,000,000 611,400,000 611,400,000 401,700,000 608,500,000 288,900,000 90,300,000 106,500,000 198,900,000 18,400,000 -93,000,000 76,300,000 154,375,000 20,500,000 209,100,000 387,900,000 261,675,000 392,700,000 478,400,000 175,600,000 166,700,000 264,600,000 484,700,000 200,300,000 178,900,000 181,000,000         160,500,000 
      other comprehensive income
    		 -86,000,000 284,000,000 429,000,000  365,325,000 1,561,400,000 107,800,000 -207,900,000 -388,400,000 -455,300,000 603,300,000 327,900,000 -920,900,000 -823,200,000 -1,426,500,000 -312,600,000 -129,900,000 90,900,000 -539,400,000 151,550,000 -24,400,000 567,600,000 63,000,000 58,300,000 277,600,000 301,300,000    76,200,000 84,500,000 135,000,000 87,100,000 91,200,000 69,700,000    
      change in total net unrealized gains on fixed-maturity securities
    		-574,000,000                                       
      comprehensive income
    		2,244,000,000 2,865,000,000 2,899,000,000 3,604,000,000 3,466,000,000 1,088,200,000 3,894,800,000 1,566,500,000 2,123,500,000 732,900,000 -109,900,000 1,051,200,000 1,154,300,000 -796,800,000 -1,366,100,000 -1,112,600,000 452,550,000 -11,400,000 881,000,000                    320,900,000 
      computation of earnings per common share
    		                                       
      average common shares outstanding - basic
    		585,600,000 146,575,000 586,500,000 586,200,000 586,000,000 146,375,000 585,600,000 585,400,000 585,400,000 584,800,000 584,900,000 584,900,000  584,500,000 584,300,000 584,300,000 146,175,000 584,700,000 584,600,000 584,900,000 146,225,000 585,100,000 584,800,000 584,700,000 584,100,000 583,600,000 583,500,000 582.7 582 582          
      net effect of dilutive stock-based compensation
    		1,300,000  1,700,000 1,600,000 1,700,000  2,000,000 2,000,000 1,900,000 2,700,000 2,100,000 2,100,000  2,600,000 2,200,000 2,000,000 650,000 2,400,000 2,200,000 2,000,000 700,000 2,700,000 2,400,000 2,200,000 3,000,000 3,300,000 3,100,000 3.9 3.8 3.6 4.3 3.3 3 3.1 2.7 2.3 3.9 3.8 3.8 
      total average equivalent common shares - diluted
    		586,900,000 147,025,000 588,200,000 587,800,000 587,700,000 146,925,000 587,600,000 587,400,000 587,300,000 587,500,000 587,000,000 587,000,000  587,100,000 586,500,000 586,300,000 146,825,000 587,100,000 586,800,000 586,900,000 146,925,000 587,800,000 587,200,000 586,900,000 587,100,000 586,900,000 586,600,000 586.6 585.8 585.6          
      basic: earnings per common share
    		4,810,000 5,040,000 4,460,000 5,420,000 4,380,000 4,020,000 3,980,000 2,490,000 3,950,000 1,900,000 570,000 750,000 1,400,000 200,000 -940,000 530,000 1,012,500 190,000 1,340,000 2,520,000 1,710,000 2,600,000 3,050,000 1,170,000 1,430,000 1,670,000 1,840,000 1.58 1.2 1.23          
      diluted: earnings per common share
    		4,800,000 5,020,000 4,450,000 5,400,000 4,370,000 4,010,000 3,970,000 2,480,000 3,940,000 1,890,000 570,000 750,000 1,390,000 200,000 -940,000 520,000 1,007,500 190,000 1,340,000 2,510,000 1,702,500 2,590,000 3,040,000 1,170,000 1,420,000 1,660,000 1,830,000 1.57 1.19 1.22          
      policyholder credit expense1
    		 274,000,000 950,000,000                                     
      changes in:
    		                                       
      total net unrealized gains on fixed-maturity securities
    		 -86,000,000 284,000,000 428,000,000  365,275,000 1,561,200,000 107,700,000 -207,800,000 -388,600,000 -455,600,000 603,200,000 327,500,000 -920,300,000 -822,800,000 -1,426,900,000 -144,575,000 -129,800,000 91,100,000 -539,600,000 151,400,000 -24,600,000 567,400,000 62,800,000 58,100,000 277,400,000 301,100,000             
      net unrealized losses on forecasted transactions
    		   1,000,000  75,000 100,000 100,000 100,000 200,000 100,000 100,000 100,000 100,000  200,000 150,000 100,000 300,000 200,000 150,000 200,000 200,000 200,000 200,000 200,000 200,000 200,000 200,000 200,000 100,000  2,300,000       
      less: preferred share dividends and other2
    		                                       
      net income available to common shareholders
    		 2,951,000,000 2,615,000,000 3,175,000,000 2,567,000,000 2,356,500,000 2,333,400,000 1,458,700,000 2,314,400,000 1,110,900,000 335,900,000 440,600,000 819,600,000 117,400,000 -549,600,000 307,200,000 592,125,000 111,800,000 783,400,000 1,473,300,000 1,000,050,000 1,524,100,000 1,783,700,000 686,000,000 835,000,000 972,700,000 1,071,700,000 921.7 697.5 716.8          
      less: preferred share dividends and other1
    		        17,000,000                               
      decrease in total net unrealized losses on fixed-maturity securities
    		    899,000,000                                   
      net impairment losses recognized in earnings
    		         -2,300,000 -2,200,000 -2,300,000 -2,100,000 -2,200,000 -2,100,000 -2,200,000 -925,000 -1,200,000 -2,500,000                     
      foreign currency translation adjustment
    		     -25,000 100,000  -200,000  200,000  300,000 -700,000 -400,000 200,000 -175,000 -200,000 -500,000            600,000  300,000 300,000  500,000    
      goodwill impairment
    		                                       
      less: preferred share dividends1
    		         10,400,000 9,500,000 7,300,000                            
      goodwill impairment1
    		              224,800,000                         
      less: preferred share dividends
    		            6,800,000 6,700,000 6,700,000 6,700,000 5,025,000 6,700,000 6,700,000 6,700,000 5,025,000 6,700,000 6,700,000 6,700,000 6,700,000 6,700,000 6,700,000 6.7 6.7 1.2          
      policyholder credit expense
    		                    265,600,000 29,000,000 1,033,400,000                 
      net income attributable to noncontrolling interest
    		                                       
      net income attributable to progressive
    		                   1,480,000,000 1,684,300,000 1,530,800,000 1,790,400,000 692,700,000 841,700,000 979,400,000 1,078,400,000 928,400,000 704,200,000 718,000,000 224,000,000 367,600,000 424,300,000 198,700,000 190,900,000 258,200,000 278,300,000 363,300,000  
      other comprehensive income attributable to nci
    		                                       
      comprehensive income attributable to progressive
    		                   940,600,000 1,665,400,000 1,506,400,000 2,358,000,000 755,200,000 899,100,000 1,254,400,000 1,377,400,000 890,000,000 654,900,000 567,700,000 299,500,000 450,800,000 558,400,000 287,000,000 280,700,000 325,800,000 145,500,000 216,000,000  
      net loss attributable to noncontrolling interest
    		                         400,000   3,000,000           
      other comprehensive loss attributable to nci
    		                           400,000 600,000 4,000,000          
      other gains
    		                                       
      total net unrealized gains on securities
    		                           -39,000,000 -50,100,000 -154,500,000 75,500,000 92,600,000 132,400,000 87,100,000 91,600,000 69,500,000 -130,100,000 -149,800,000  
      computation of per share earnings available to progressive common shareholders
    		                                       
      dividends declared per common share1
    		                                       
      net realized gains on securities
    		                              18,300,000 45,900,000 52,900,000 40,900,000 32,500,000 17,400,000  77,700,000 119,400,000 
      gains on extinguishment of debt
    		                                200,000  1,600,000     
      benefit from income taxes
    		                              36,600,000 181,900,000 211,200,000 53,000,000 92,400,000 128,700,000 142,500,000 156,800,000  
      net
    		                              9,200,000         
      other comprehensive (income) loss attributable to nci
    		                                 1,200,000    2,800,000  
      computation of per share earnings attributable to progressive
    		                                       
      average shares outstanding - basic
    		                              581.3 580.5 580.3 581.5 582.4 583.2 585.2 585.7 593.9 
      total average equivalent shares - diluted
    		                              585.6 583.8 583.3       
      basic: earnings per share
    		                              0.39 0.63 0.73 0.34 0.33     
      diluted: earnings per share
    		                              0.38 0.63 0.73 0.34 0.33     
      dividends declared per share1
    		                                       
      net income attributable to noncontrolling interest (nci), net of tax
    		                                 6,800,000 4,000,000 500,000 8,200,000 5,200,000  
      other comprehensive income, net of tax
    		                                       
      total equivalent shares - diluted
    		                                 584.6 585.1 585.5 589.1 589.5 597.7 
      net unrealized gains on forecasted transactions
    		                                       
      computation of per share earnings
    		                                       
      basic: net income per share
    		                                   0.44 0.48 0.62 0.54 
      diluted: net income per share
    		                                   0.44 0.47 0.62 0.54 
      computation of net income per share
    		                                       
      other-than-temporary impairment (otti) losses:
    		                                       
      total otti losses
    		                                       
      non-credit losses, net of credit losses recognized on previously recorded non-credit otti losses
    		                                       
      net unrealized gains on securities:
    		                                       
      net non-credit related otti losses, adjusted for valuation changes
    		                                       
      other net unrealized gains on securities
    		                                       
    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 2017-06-30 2017-03-31 2016-09-30 2016-06-30 2016-03-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-03-31 2012-09-30 2012-06-30 2012-03-31 2011-06-30 2010-03-31 
                                                         
        assets
      		                                                   
        available-for-sale securities, at fair value:
      		                                                   
        fixed maturities
      		87,832,000,000  88,509,000,000 82,272,000,000 77,101,000,000  74,411,200,000 67,488,300,000 63,629,700,000  56,591,900,000 54,078,100,000 50,289,200,000  44,173,100,000 43,172,500,000 46,316,400,000  45,045,700,000 43,031,000,000 39,091,800,000  36,313,500,000 34,726,400,000 34,276,600,000  32,812,700,000 31,188,200,000 27,821,900,000  25,642,700,000 23,789,200,000 22,420,100,000 20,201,700,000 20,201,700,000 16,243,800,000 16,243,800,000 16,243,800,000 15,332,200,000 15,332,200,000 15,332,200,000 13,549,200,000 13,549,200,000 12,506,200,000 13,540,400,000 13,540,400,000 12,295,200,000 12,075,900,000 11,952,700,000 11,788,500,000 11,850,000,000 
        short-term investments
      		2,126,000,000  1,515,000,000 2,103,000,000 2,595,000,000  756,500,000 733,400,000 1,326,700,000  1,795,200,000 1,494,300,000 2,524,100,000  4,237,600,000 4,611,800,000 529,900,000  1,088,700,000 1,710,600,000 2,243,100,000  4,667,800,000 4,700,500,000 2,524,200,000  1,467,400,000 1,360,900,000 2,584,700,000  2,809,700,000 3,231,200,000 3,052,400,000 2,869,400,000 2,869,400,000 3,572,900,000 3,572,900,000 3,572,900,000 2,172,000,000 2,172,000,000 2,172,000,000 2,149,000,000 2,149,000,000 1,872,900,000 1,272,600,000 1,272,600,000 2,394,100,000 1,679,200,000 1,520,100,000 1,343,500,000 1,090,800,000 
        total available-for-sale securities
      		89,958,000,000  90,024,000,000 84,375,000,000 79,696,000,000  75,167,700,000 68,221,700,000 64,956,400,000  58,387,100,000 55,572,400,000 52,813,300,000  48,410,700,000 47,784,300,000 46,846,300,000  46,134,400,000 44,741,600,000 41,334,900,000  40,981,300,000 39,426,900,000 36,800,800,000  34,280,100,000 32,549,100,000 30,406,600,000  28,452,400,000 27,020,400,000 25,472,500,000 23,071,100,000 23,071,100,000                 
        equity securities, at fair value:
      		                                                   
        nonredeemable preferred stocks
      		240,000,000  438,000,000 500,000,000 584,000,000  735,000,000 838,200,000 886,700,000  868,900,000 985,100,000 1,078,800,000  1,254,400,000 1,360,500,000 1,527,500,000  1,572,800,000 1,662,300,000 1,507,200,000  1,323,200,000 1,180,600,000 933,400,000  1,128,500,000 1,130,000,000 1,095,400,000  840,900,000 758,600,000 745,900,000 803,800,000 803,800,000 853,500,000 853,500,000 853,500,000 782,600,000 782,600,000 782,600,000 827,500,000 827,500,000 737,900,000 711,200,000 711,200,000 848,400,000 799,300,000 832,400,000 1,029,700,000 1,157,600,000 
        common equities
      		3,933,000,000  4,047,000,000 3,735,000,000 3,384,000,000  3,497,000,000 3,295,600,000 3,194,900,000  2,614,500,000 2,708,100,000 2,794,300,000  2,665,300,000 2,784,700,000 4,812,600,000  4,580,200,000 4,538,900,000 4,558,500,000  3,459,800,000 3,170,400,000 2,608,100,000  3,165,100,000 3,135,500,000 3,010,500,000  3,057,300,000 3,142,200,000 3,033,200,000 3,399,800,000 3,399,800,000 2,812,400,000 2,812,400,000 2,812,400,000 2,650,500,000 2,650,500,000 2,650,500,000 2,492,300,000 2,492,300,000 2,278,700,000 2,530,500,000 2,530,500,000 1,639,200,000 2,055,100,000 2,096,500,000 1,867,900,000 1,425,000,000 
        total equity securities
      		4,173,000,000  4,485,000,000 4,235,000,000 3,968,000,000  4,232,000,000 4,133,800,000 4,081,600,000  3,483,400,000 3,693,200,000 3,873,100,000  3,919,700,000 4,145,200,000 6,340,100,000  6,153,000,000 6,201,200,000 6,065,700,000  4,783,000,000 4,351,000,000 3,541,500,000  4,293,600,000 4,265,500,000 4,105,900,000  3,898,200,000 3,900,800,000 3,779,100,000 4,203,600,000 4,203,600,000                 
        total investments
      		94,131,000,000  94,509,000,000 88,610,000,000 83,664,000,000  79,399,700,000 72,355,500,000 69,038,000,000  61,870,500,000 59,265,600,000 56,686,400,000  52,330,400,000 51,929,500,000 53,186,400,000  52,287,400,000 50,942,800,000 47,400,600,000  45,764,300,000 43,777,900,000 40,342,300,000  38,573,700,000 36,814,600,000 34,512,500,000  32,350,600,000 30,921,200,000 29,251,600,000 27,274,700,000 27,274,700,000 23,482,600,000 23,482,600,000 23,482,600,000 20,937,300,000 20,937,300,000 20,937,300,000 19,018,000,000 19,018,000,000 17,395,700,000 18,054,700,000 18,054,700,000 17,176,900,000 16,609,500,000 16,401,700,000 16,029,600,000 15,523,400,000 
        cash and cash equivalents
      		162,000,000  173,000,000 125,000,000 195,000,000  136,100,000 90,200,000 154,500,000  123,500,000 163,900,000 273,700,000  350,900,000 226,100,000 272,700,000  270,600,000 99,500,000 122,900,000  90,100,000 108,000,000 369,500,000  45,900,000 91,900,000 158,000,000  121,900,000 154,800,000 190,100,000 265,000,000 265,000,000                 
        restricted cash and cash equivalents
      		17,000,000  12,000,000 10,000,000 12,000,000  10,900,000 11,500,000 13,400,000  14,900,000 15,600,000 14,900,000  14,400,000 14,400,000 14,600,000  14,900,000 15,100,000                                
        total cash, cash equivalents, restricted cash, and restricted cash equivalents
      		179,000,000  185,000,000 135,000,000 207,000,000  147,000,000 101,700,000 167,900,000  138,400,000 179,500,000 288,600,000  365,300,000 240,500,000 287,300,000                                   
        accrued investment income
      		685,000,000  691,000,000 636,000,000 584,000,000  560,300,000 564,100,000 464,200,000  378,100,000 354,200,000 299,500,000  217,400,000 216,700,000 193,400,000  168,600,000 179,300,000 166,000,000  181,500,000 190,800,000 171,600,000  182,500,000 187,500,000 172,100,000  159,500,000 146,300,000 139,200,000 119,700,000 119,700,000 103,900,000 103,900,000 103,900,000 102,200,000 102,200,000 102,200,000 87,300,000 87,300,000 82,300,000 89,800,000 89,800,000 88,200,000 96,400,000 96,800,000 104,300,000 109,300,000 
        premiums receivable, net of allowance
      		17,614,000,000  16,519,000,000 16,406,000,000 16,811,000,000  15,135,400,000 14,544,500,000 14,192,500,000  12,408,000,000 12,273,300,000 12,411,400,000  10,867,700,000 10,561,800,000 10,519,000,000  10,246,700,000 9,436,200,000 9,218,800,000  8,574,300,000 7,557,400,000 7,568,300,000  7,687,200,000 7,167,100,000 7,189,800,000  6,776,600,000 6,230,200,000 6,043,800,000 5,422,500,000 5,422,500,000 4,509,200,000 4,509,200,000 4,509,200,000 3,987,700,000 3,987,700,000 3,987,700,000 3,537,500,000 3,537,500,000 3,515,900,000 3,310,700,000 3,310,700,000 3,356,000,000 3,222,100,000 3,167,500,000 2,982,600,000 2,738,400,000 
        reinsurance recoverables
      		4,003,000,000  4,107,000,000 4,197,000,000 4,449,000,000  4,881,500,000 4,881,400,000 5,003,400,000  5,331,200,000 5,516,900,000 5,616,200,000  6,306,800,000 4,961,200,000 5,025,000,000  5,044,900,000 4,709,100,000 4,143,200,000  3,987,300,000 3,654,300,000 3,639,600,000  3,298,400,000 3,051,500,000 2,842,800,000                       
        prepaid reinsurance premiums
      		198,000,000  215,000,000 263,000,000 306,000,000  224,000,000 290,800,000 209,800,000  235,000,000 242,900,000 269,600,000  367,500,000 464,300,000 455,100,000  661,100,000 620,000,000 667,600,000  463,400,000 361,300,000 438,200,000  458,800,000 338,000,000 446,700,000  379,600,000 289,800,000 342,800,000 203,300,000 203,300,000 170,500,000 170,500,000 170,500,000 199,300,000 199,300,000 199,300,000 85,300,000 85,300,000 81,800,000 74,900,000 74,900,000 72,800,000 71,100,000 70,000,000 86,700,000 88,100,000 
        deferred acquisition costs
      		2,131,000,000  2,164,000,000 2,110,000,000 2,068,000,000  2,031,600,000 1,938,300,000 1,818,200,000  1,732,100,000 1,685,600,000 1,626,800,000  1,585,200,000 1,498,400,000 1,407,700,000  1,430,700,000 1,360,600,000 1,309,100,000  1,265,000,000 1,154,800,000 1,095,800,000  1,093,700,000 1,047,400,000 999,100,000  962,700,000 895,700,000 842,300,000 780,500,000 780,500,000 651,200,000 651,200,000 651,200,000 564,100,000 564,100,000 564,100,000 457,200,000 457,200,000 466,900,000 447,600,000 447,600,000 461,800,000 452,400,000 441,700,000 451,600,000 417,200,000 
        property and equipment
      		792,000,000  790,000,000 820,000,000 854,000,000  688,800,000 713,500,000 756,300,000  919,800,000 989,000,000 949,000,000  1,067,100,000 1,124,700,000 1,104,400,000  1,161,000,000 1,086,400,000 1,077,400,000  1,181,600,000 1,189,800,000 1,215,100,000  1,214,200,000 1,174,900,000 1,127,300,000  1,139,300,000 1,116,400,000 1,112,000,000 1,119,600,000 1,119,600,000 1,177,100,000 1,177,100,000 1,177,100,000 1,037,200,000 1,037,200,000 1,037,200,000 960,600,000 960,600,000 950,000,000 960,900,000 960,900,000 918,200,000 914,300,000 916,400,000 917,100,000 932,600,000 
        net federal deferred income taxes
      		742,000,000 90,000,000 662,000,000 633,000,000 860,000,000 82,000,000 598,000,000 1,001,000,000 1,031,800,000 65,600,000 1,357,100,000 1,198,500,000 1,057,000,000 64,300,000 1,269,500,000 955,600,000 370,500,000 65,100,000 110,700,000 219,400,000 241,500,000 86,900,000                              
        other assets
      		1,734,000,000 163,000,000 1,693,000,000 1,670,000,000 1,606,000,000 176,000,000 1,536,200,000 1,502,200,000 1,445,800,000 165,400,000 979,600,000 934,000,000 893,800,000 150,600,000 827,600,000 779,400,000 825,400,000 207,300,000 747,600,000 776,100,000 697,500,000 270,900,000 744,100,000 758,300,000 722,800,000 303,800,000 757,800,000 738,900,000 671,900,000 124,200,000 396,900,000 412,200,000 362,200,000 412,900,000 412,900,000 339,600,000 339,600,000 339,600,000 335,800,000 335,800,000 335,800,000 288,500,000 288,500,000 614,600,000 304,300,000 304,300,000 235,300,000 195,200,000 200,700,000 198,900,000 251,900,000 
        total assets
      		122,209,000,000 45,502,000,000 121,535,000,000 115,480,000,000 111,409,000,000 35,566,000,000 105,202,500,000 97,893,000,000 94,127,900,000 28,324,000,000 85,652,600,000 82,945,200,000 80,407,100,000 22,696,600,000 75,524,200,000 73,057,200,000 73,929,600,000 23,558,900,000 72,618,100,000 69,824,300,000 65,413,300,000 25,634,200,000 62,890,800,000 59,406,100,000 56,265,200,000 20,156,500,000 54,008,100,000 51,324,200,000 48,850,300,000 17,159,600,000 45,543,700,000 43,363,500,000 41,330,900,000 38,701,200,000 38,701,200,000 33,427,500,000 33,427,500,000 33,427,500,000 29,819,300,000 29,819,300,000 29,819,300,000 25,787,600,000 25,787,600,000 24,315,400,000 24,408,200,000 24,408,200,000 23,429,300,000 22,719,000,000 22,269,300,000 21,807,600,000 21,150,300,000 
        liabilities and shareholders’ equity
      		                                                   
        unearned premiums
      		27,893,000,000  26,822,000,000 26,335,000,000 26,612,000,000  24,772,500,000 23,680,400,000 22,907,300,000  20,761,700,000 20,070,100,000 19,844,300,000  17,796,900,000 17,274,800,000 16,991,400,000  16,671,400,000 15,555,900,000 15,045,900,000  14,199,300,000 13,055,600,000 12,641,100,000  12,526,500,000 11,796,700,000 11,603,600,000  11,009,200,000 10,245,900,000 9,837,800,000 8,903,500,000 8,903,500,000 7,468,300,000 7,468,300,000 7,468,300,000 6,621,800,000 6,621,800,000 6,621,800,000 5,440,100,000 5,440,100,000 5,460,100,000 5,174,500,000 5,174,500,000 5,203,400,000 5,014,600,000 4,880,600,000 4,704,300,000 4,353,800,000 
        loss and loss adjustment expense reserves
      		44,377,000,000  42,105,000,000 41,154,000,000 39,822,000,000  38,061,500,000 36,605,200,000 34,831,000,000  33,577,300,000 32,753,300,000 31,026,400,000  30,631,800,000 27,812,000,000 26,754,200,000  25,926,300,000 23,895,600,000 21,063,700,000  19,589,200,000 18,512,000,000 18,306,500,000  17,370,000,000 16,568,600,000 15,876,600,000  14,620,800,000 14,070,800,000 13,329,000,000 13,086,900,000 13,086,900,000 11,368,000,000 11,368,000,000 11,368,000,000 10,039,000,000 10,039,000,000 10,039,000,000 8,857,400,000 8,857,400,000 8,592,600,000 8,479,700,000 8,479,700,000 7,760,200,000 7,573,200,000 7,337,400,000 7,142,600,000 7,071,000,000 
        dividends payable on common shares
      		58,000,000 7,972,000,000    2,695,000,000           58,500,000 58,500,000 58,500,000 58,500,000 58,500,000 2,694,500,000                              
        accounts payable, accrued expenses, and other liabilities
      		9,456,000,000 310,000,000 10,267,000,000 8,492,000,000 9,127,000,000 387,000,000 8,317,400,000 7,376,300,000 7,688,600,000 1,158,300,000 7,030,700,000 6,524,000,000 6,278,700,000 417,300,000 5,931,900,000 5,931,200,000 6,688,700,000 370,000,000 6,394,900,000 6,021,800,000 5,770,400,000 505,000,000 5,405,800,000 5,576,100,000 5,346,500,000 475,200,000 5,222,900,000 4,867,500,000 4,594,300,000 250,500,000 3,924,100,000 3,922,300,000 3,414,300,000 3,481,000,000 3,481,000,000 2,495,500,000 2,495,500,000 2,495,500,000 2,067,800,000 2,067,800,000 2,067,800,000 1,893,800,000 1,893,800,000 1,911,700,000 1,785,000,000 1,785,000,000 1,848,400,000 1,781,800,000 1,709,600,000 1,652,100,000 1,718,400,000 
        debt1
      		8,386,000,000 6,897,000,000 6,896,000,000 6,895,000,000 6,894,000,000 6,893,000,000 6,891,800,000 6,890,700,000 6,889,700,000 6,888,600,000 6,887,600,000 6,886,500,000 6,389,300,000 6,388,300,000 6,387,400,000 6,386,500,000 6,385,600,000 4,898,800,000 4,898,200,000 5,397,500,000 5,396,800,000 5,396,100,000 5,395,400,000 5,394,700,000 5,394,000,000  4,406,500,000 4,406,000,000 4,405,400,000  3,859,900,000 3,859,500,000 3,859,200,000 3,306,300,000 3,306,300,000    2,707,900,000 2,707,900,000 2,707,900,000 2,164,700,000 2,164,700,000 1,861,300,000 1,860,900,000 1,860,900,000 2,062,700,000 2,062,800,000 2,080,000,000 1,959,100,000 1,958,200,000 
        total liabilities
      		90,170,000,000 15,179,000,000 86,090,000,000 82,876,000,000 82,455,000,000 9,975,000,000 78,043,200,000 74,552,600,000 72,316,600,000 8,046,900,000 68,257,300,000 66,233,900,000 63,538,700,000 6,805,600,000 60,748,000,000 57,404,500,000 56,878,400,000 5,327,300,000 54,060,000,000 51,148,700,000 47,576,800,000 8,595,600,000 44,803,600,000 42,735,500,000 41,688,100,000 6,257,700,000 39,661,900,000 37,773,300,000 36,518,400,000 6,123,300,000 33,467,500,000 32,144,500,000 30,493,500,000 28,912,700,000 28,912,700,000 24,986,700,000 24,986,700,000 24,986,700,000 22,065,000,000 22,065,000,000 22,065,000,000 18,859,000,000 18,859,000,000 17,876,800,000 18,218,700,000 18,218,700,000 16,874,700,000 16,432,400,000 16,018,900,000 15,458,100,000 15,101,400,000 
        common shares, 1.00 par value
      		584,000,000 586,000,000 586,000,000 586,000,000 586,000,000 586,000,000 585,800,000 585,700,000 585,700,000 585,300,000 585,000,000 585,300,000 585,400,000 584,900,000 585,100,000 584,900,000 584,900,000 584,400,000 585,000,000 585,200,000 585,200,000 585,200,000 585,600,000 585,400,000 585,300,000 584,600,000 584,600,000 584,100,000 584,000,000 583,200,000 583,100,000 582,500,000 582,400,000 581,700,000 581,700,000 579,900,000 579,900,000 579,900,000 583,600,000 583,600,000 583,600,000 587,800,000 587,800,000 593,100,000 595,800,000 595,800,000 604,700,000 609,200,000 611,200,000 642,700,000 662,400,000 
        paid-in capital
      		2,314,000,000 2,307,000,000 2,233,000,000 2,192,000,000 2,160,000,000 2,145,000,000 2,096,200,000 2,060,500,000 2,028,700,000 2,013,100,000 1,977,900,000 1,935,700,000 1,907,700,000 1,893,000,000 1,839,600,000 1,815,200,000 1,788,600,000 1,772,900,000 1,735,900,000 1,712,300,000 1,685,500,000 1,672,900,000 1,629,400,000 1,614,500,000 1,601,900,000 1,573,400,000 1,539,100,000 1,523,300,000 1,496,600,000 1,479,000,000 1,443,400,000 1,425,900,000 1,401,600,000 1,389,200,000 1,389,200,000 1,303,400,000 1,303,400,000 1,303,400,000 1,218,800,000 1,218,800,000 1,218,800,000 1,184,300,000 1,184,300,000 1,159,000,000 1,142,000,000 1,142,000,000 1,048,600,000 1,040,400,000 1,029,400,000 1,007,700,000 1,007,100,000 
        retained earnings
      		29,612,000,000 27,327,000,000 32,437,000,000 29,921,000,000 26,732,000,000 24,283,000,000 24,631,700,000 22,410,000,000 21,020,500,000 18,800,500,000 17,380,900,000 16,350,400,000 16,080,100,000 15,721,200,000 14,987,500,000 14,967,700,000 15,569,600,000 15,339,700,000 15,390,000,000 15,401,000,000 14,679,600,000 13,354,900,000 14,427,700,000 13,001,800,000 11,266,200,000 10,679,600,000 10,995,200,000 10,276,400,000 9,358,100,000 8,386,600,000 9,602,100,000 8,720,400,000 8,017,900,000 6,031,700,000 6,031,700,000 5,140,400,000 5,140,400,000 5,140,400,000 4,686,600,000 4,686,600,000 4,686,600,000 4,133,400,000 4,133,400,000 3,735,200,000 3,500,000,000 3,500,000,000 3,996,200,000 3,794,300,000 3,715,000,000 3,835,600,000 3,595,700,000 
        accumulated other comprehensive income:
      		                                                   
        net unrealized gains on fixed-maturity securities
      		-457,000,000  203,000,000 -81,000,000 -509,000,000  -139,700,000 -1,700,900,000 -1,808,600,000  -3,027,300,000 -2,638,700,000 -2,183,100,000  -3,113,800,000 -2,193,500,000 -1,370,700,000  369,000,000 498,800,000 407,700,000  966,400,000 991,000,000 423,600,000  531,000,000 472,900,000 195,500,000                       
        net unrealized losses on forecasted transactions
      		-13,000,000  -13,000,000 -13,000,000 -14,000,000  -13,700,000 -13,800,000 -13,900,000  -14,100,000 -14,300,000 -14,400,000  -14,600,000 -14,700,000 -14,700,000  -15,000,000 -15,100,000 -15,400,000  -15,800,000           -14,800,000 -14,800,000 -9,400,000 -9,400,000 -9,400,000 -8,200,000 -8,200,000            
        foreign currency translation adjustment
      		-1,000,000  -1,000,000 -1,000,000 -1,000,000  -1,000,000 -1,100,000 -1,100,000  -1,000,000 -1,000,000 -1,200,000  -1,500,000 -800,000 -400,000  -700,000 -500,000                -1,100,000 -1,100,000 -1,100,000 -1,500,000 -1,500,000 -1,500,000 -300,000 -300,000 600,000 600,000 600,000 2,100,000 1,700,000 2,300,000 2,200,000 1,700,000 
        total accumulated other comprehensive income
      		-471,000,000 103,000,000 189,000,000 -95,000,000 -524,000,000 -1,423,000,000 -154,400,000 -1,715,800,000 -1,823,600,000 -1,615,700,000 -3,042,400,000 -2,654,000,000 -2,198,700,000 -2,802,000,000 -3,129,900,000 -2,209,000,000 -1,385,800,000 40,700,000 353,300,000 483,200,000                   800,400,000 800,400,000 800,400,000 1,023,100,000 1,023,100,000 951,300,000 951,700,000 951,700,000 905,100,000 842,700,000 894,800,000 863,500,000 783,700,000 
        total shareholders’ equity
      		32,039,000,000 30,323,000,000 35,445,000,000 32,604,000,000 28,954,000,000 25,591,000,000 27,159,300,000 23,340,400,000 21,811,300,000 20,277,100,000 17,395,300,000 16,711,300,000 16,868,400,000 15,891,000,000 14,776,200,000 15,652,700,000 17,051,200,000 18,231,600,000 18,558,100,000 18,675,600,000 17,836,500,000 17,038,600,000 18,087,200,000 16,670,600,000 14,351,500,000 13,673,200,000 14,123,300,000 13,330,800,000 12,110,700,000 10,821,800,000 11,858,800,000 11,000,800,000 10,323,200,000 9,284,800,000 9,284,800,000 7,957,100,000 7,957,100,000 7,957,100,000 7,289,400,000 7,289,400,000 7,289,400,000 6,928,600,000 6,928,600,000 6,438,600,000 6,189,500,000 6,189,500,000 6,554,600,000 6,286,600,000 6,250,400,000 6,349,500,000 6,048,900,000 
        total liabilities and shareholders’ equity
      		122,209,000,000 45,502,000,000 121,535,000,000 115,480,000,000 111,409,000,000 35,566,000,000 105,202,500,000 97,893,000,000 94,127,900,000 28,324,000,000 85,652,600,000 82,945,200,000 80,407,100,000 22,696,600,000 75,524,200,000 73,057,200,000 73,929,600,000 23,558,900,000 72,618,100,000 69,824,300,000                        24,315,400,000 24,408,200,000 24,408,200,000 23,429,300,000 22,719,000,000 22,269,300,000 21,807,600,000 21,150,300,000 
        investment in affiliate
      		 5,000,000    5,000,000    5,000,000    5,000,000    5,000,000    5,000,000    5,000,000    5,000,000                      
        investment in subsidiaries
      		 31,821,000,000    28,850,000,000    23,409,900,000    17,911,800,000    19,512,200,000    18,895,900,000    16,186,800,000    13,652,200,000                      
        receivable from investment subsidiary
      		 12,524,000,000    5,812,000,000    3,791,400,000    4,098,700,000    3,382,100,000    5,901,700,000    2,912,000,000    2,658,900,000                      
        intercompany receivable
      		 899,000,000    641,000,000    886,700,000    466,200,000    387,200,000    473,800,000    678,600,000    651,100,000                      
        serial preferred shares, series b, no par value
      		          493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000 493,900,000                   
        serial preferred shares
      		                                                   
        serial preferred shares, series b, no par value (cumulative, liquidation preference of 1,000 per share) (authorized, issued, and outstanding 0.5)2
      		         493,900,000                                          
        goodwill
      		          227,900,000 227,900,000 227,900,000  227,900,000 227,900,000 452,700,000  452,700,000 452,700,000 452,700,000  452,700,000 452,700,000 452,700,000  452,700,000 452,700,000 452,700,000  452,700,000 452,700,000 452,700,000 452,700,000 452,700,000 449,400,000 449,400,000 449,400,000 447,600,000 447,600,000 447,600,000 1,600,000 1,600,000         
        intangible assets, net of accumulated amortization of 170.0, 153.1, and 158.6
      		          74,900,000                                         
        intangible assets, net of accumulated amortization of 167.1, 147.7, and 158.6
      		           77,800,000                                        
        intangible assets, net of accumulated amortization of 164.0, 142.2, and 158.6
      		            80,900,000                                       
        intangible assets, net of accumulated amortization of 153.1, 369.2, and 383.8
      		              91,800,000                                     
        intangible assets, net of accumulated amortization of 147.7, 354.6, and 383.8
      		               97,200,000                                    
        intangible assets, net of accumulated amortization of 142.2, 340.3, and 383.8
      		                102,700,000                                   
        total cash, cash equivalents, and restricted cash
      		                  285,500,000 114,600,000 123,200,000  91,100,000 109,100,000 370,400,000  46,200,000 92,900,000 158,700,000  122,700,000 157,700,000 196,600,000 275,300,000 275,300,000                 
        intangible assets, net of accumulated amortization of 369.2, 312.0, and 326.1
      		                  131,900,000                                 
        liabilities
      		                                                   
        shareholders’ equity
      		                                                   
        intangible assets, net of accumulated amortization of 354.6, 297.8, and 326.1
      		                   146,500,000                                
        restricted cash
      		                    300,000  1,000,000 1,100,000 900,000  300,000 1,000,000 700,000  800,000 2,900,000 6,500,000 10,300,000 10,300,000    300,000             
        intangible assets, net of accumulated amortization of 340.3, 328.5, and 326.1
      		                    157,200,000                               
        redeemable noncontrolling interest
      		                         225,600,000    214,500,000                      
        accumulated other comprehensive income attributable to nci
      		                                                   
        total accumulated other comprehensive income attributable to progressive
      		                    392,300,000 931,700,000 950,600,000 975,000,000 404,200,000 341,700,000 510,500,000 453,100,000 178,100,000 -120,900,000    1,282,200,000 1,282,200,000 933,400,000 933,400,000 933,400,000              
        total liabilities, redeemable nci, and shareholders’ equity
      		                    65,413,300,000 25,634,200,000 62,890,800,000 59,406,100,000 56,265,200,000 20,156,500,000 54,008,100,000 51,324,200,000 48,850,300,000 17,159,600,000 45,543,700,000 43,363,500,000 41,330,900,000 38,701,200,000 38,701,200,000 33,427,500,000 33,427,500,000 33,427,500,000 29,819,300,000 29,819,300,000 29,819,300,000 25,787,600,000 25,787,600,000         
        intangible assets, net of accumulated amortization of 312.0, 299.4, and 314.0
      		                      185,500,000                             
        net deferred income taxes
      		                      213,900,000 197,100,000 34,600,000 70,300,000 136,000,000 134,500,000 38,500,000 68,200,000 53,500,000 46,000,000 53,200,000 135,000,000 135,000,000 111,300,000 111,300,000 111,300,000 109,300,000 109,300,000 109,300,000 98,900,000 98,900,000 51,100,000 28,400,000 28,400,000      
        redeemable noncontrolling interest (nci)2
      		                        225,600,000  222,900,000 220,100,000 221,200,000  217,400,000 218,200,000 514,200,000 503,700,000 503,700,000    464,900,000 464,900,000 464,900,000           
        accumulated other comprehensive loss attributable to nci
      		                              3,600,000 6,600,000 6,000,000                   
        intangible assets, net of accumulated amortization of 297.8, 283.6, and 314.0
      		                       199,700,000                            
        intangible assets, net of accumulated amortization of 328.5, 265.6, and 314.0
      		                        213,800,000                           
        dividend payable
      		                         1,375,400,000    1,467,900,000                      
        debt
      		                         4,407,100,000    4,404,900,000                      
        intangible assets, net of accumulated amortization of 299.4, 229.7, and 247.7
      		                          242,900,000                         
        intangible assets, net of accumulated amortization of 283.6, 211.7, and 247.7
      		                           258,700,000                        
        accumulated other comprehensive (income) loss attributable to nci
      		                                 2,000,000 2,000,000 4,300,000 4,300,000 4,300,000              
        intangible assets, net of accumulated amortization of 265.6, 193.7, and 247.7
      		                            276,700,000                       
        reinsurance recoverables, including 114.1, 76.4, and 103.3 on paid losses and loss adjustment expenses
      		                              2,490,500,000                     
        intangible assets, net of accumulated amortization of 229.7, 157.7, and 175.7
      		                              312,600,000                     
        net unrealized gains on securities
      		                                 1,295,000,000 1,295,000,000 939,600,000 939,600,000 939,600,000 809,000,000 809,000,000 809,000,000 1,021,900,000 1,021,900,000         
        reinsurance recoverables, including 117.6, 79.2, and 103.3 on paid losses and loss adjustment expenses
      		                               2,410,700,000  2,273,400,000                  
        intangible assets, net of accumulated amortization of 211.7, 140.5, and 175.7
      		                               330,600,000  366,600,000                  
        reinsurance recoverables, including 102.1, 88.6, and 103.3 on paid losses and loss adjustment expenses
      		                                2,239,100,000  2,273,400,000                 
        intangible assets, net of accumulated amortization of 193.7, 125.0, and 175.7
      		                                348,600,000  366,600,000                 
        investments - available-for-sale, at fair value:
      		                                                   
        equity securities:
      		                                                   
        cash
      		                                   211,500,000 211,500,000 211,500,000 224,100,000 224,400,000 224,400,000 108,400,000 108,400,000 96,700,000 75,100,000 75,100,000 192,200,000 165,500,000 156,000,000 149,700,000 158,900,000 
        restricted cash1
      		                                   14,900,000 14,900,000 14,900,000              
        reinsurance recoverables, including 76.4, 67.5, and 83.8 on paid losses and loss adjustment expenses
      		                                   1,884,800,000                
        intangible assets, net of accumulated amortization of 157.7, 94.0, and 109.5
      		                                   432,800,000                
        dividends payable
      		                                   395,400,000 395,400,000 395,400,000 519,200,000 519,200,000 519,200,000 404,100,000 404,100,000  890,200,000 890,200,000      
        debt2
      		                                   3,148,200,000 3,148,200,000 3,148,200,000              
        redeemable noncontrolling interest (nci)3
      		                                   483,700,000 483,700,000 483,700,000              
        reinsurance recoverables, including 79.2, 73.8, and 83.8 on paid losses and loss adjustment expenses
      		                                    1,884,800,000               
        intangible assets, net of accumulated amortization of 140.5, 78.5, and 109.5
      		                                    432,800,000               
        reinsurance recoverables, including 88.6, 59.5, and 83.8 on paid losses and loss adjustment expenses
      		                                     1,884,800,000              
        intangible assets, net of accumulated amortization of 125.0, 62.9, and 109.5
      		                                     432,800,000              
        shareholders' equity
      		                                                   
        reinsurance recoverables, including 67.5, 46.1, and 46.1 on paid losses and loss adjustment expenses
      		                                      1,488,800,000             
        intangible assets, net of accumulated amortization of 94.0, 31.8, and 47.4
      		                                      494,900,000             
        accumulated other comprehensive income, net of tax:
      		                                                   
        accumulated other comprehensive (income) loss attributable to noncontrolling interest
      		                                      1,100,000 1,100,000 1,100,000           
        reinsurance recoverables, including 73.8, 46.2, and 46.1 on paid losses and loss adjustment expenses
      		                                       1,488,800,000            
        intangible assets, net of accumulated amortization of 78.5, 16.3, and 47.4
      		                                       494,900,000            
        reinsurance recoverables, including 59.5, 50.8, and 46.1 on paid losses and loss adjustment expenses
      		                                        1,488,800,000           
        intangible assets, net of accumulated amortization of 62.9, 0.6, and 47.4
      		                                        494,900,000           
        net unrealized gains on forecasted transactions
      		                                        -8,200,000 1,500,000 1,500,000 3,800,000 4,100,000 4,100,000 6,400,000 6,700,000 7,300,000 13,100,000 14,700,000 
        reinsurance recoverables, including 46.1, 39.4, and 46.0 on paid losses and loss adjustment expenses
      		                                         1,231,900,000          
        intangible assets, net of accumulated amortization of 31.8, 0.6, and 0.6
      		                                         11,300,000          
        reinsurance recoverables, including 46.2, 36.2, and 46.0 on paid losses and loss adjustment expenses
      		                                          1,231,900,000         
        intangible assets, net of accumulated amortization of 16.3, 0.6, and 0.6
      		                                          11,300,000         
        reinsurance recoverables, including 34.5, 32.4, and 44.3 on paid losses and loss adjustment expenses
      		                                           1,111,500,000  1,090,200,000      
        net non-credit related otti losses, adjusted for valuation changes
      		                                              -600,000 -2,300,000 -2,400,000 -4,900,000 -1,800,000 
        other net unrealized gains on securities
      		                                           946,900,000 947,000,000 947,000,000 897,200,000 836,600,000 887,600,000 853,100,000 769,100,000 
        total net unrealized gains on securities
      		                                           946,900,000 947,000,000 947,000,000 896,600,000 834,300,000 885,200,000 848,200,000 767,300,000 
        reinsurance recoverables, including 39.4, 36.4, and 44.3 on paid losses and loss adjustment expenses
      		                                            1,090,200,000       
        investments—available-for-sale, at fair value:
      		                                                   
        reinsurance recoverables, including 32.5, 36.5, and 32.3 on paid losses and loss adjustment expenses
      		                                              880,500,000     
        income taxes
      		                                              47,400,000 147,800,000 11,300,000 111,400,000 189,000,000 
        reinsurance recoverables, including 30.4, 34.3, and 32.3 on paid losses and loss adjustment expenses
      		                                               844,700,000    
        reinsurance recoverables, including 41.6, 34.9, and 32.3 on paid losses and loss adjustment expenses
      		                                                818,500,000   
        reinsurance recoverables, including 34.3, 35.7, and 37.4 on paid losses and loss adjustment expenses
      		                                                 775,700,000  
        reinsurance recoverables, including 34.9, 40.4, and 37.4 on paid losses and loss adjustment expenses
      		                                                  741,500,000 
      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 
                                         
          cash flows from operating activities
        		                                 
          net income
        		2,818,000,000 2,951,000,000 2,615,000,000 3,175,000,000 2,567,000,000 2,356,500,000 2,333,400,000 1,458,700,000 2,331,400,000 1,987,800,000 1,121,300,000 345,400,000 447,900,000 597,400,000 667,000,000 -856,800,000 313,900,000 962,300,000 1,598,500,000 -689,900,000 1,480,000,000  1,530,800,000 1,790,400,000 699,100,000  843,600,000 979,000,000 1,082,800,000  930,200,000 701,200,000 729,800,000 
          adjustments to reconcile net income to net cash from operating activities:
        		                                 
          depreciation
        		75,000,000  81,000,000 79,000,000 70,000,000  70,700,000 67,800,000 69,700,000  71,400,000 72,600,000 68,000,000  77,900,000 78,500,000 71,100,000  74,500,000 66,500,000 62,900,000  70,900,000 67,700,000 62,600,000  56,400,000 62,000,000 52,600,000  51,200,000 45,700,000 40,900,000 
          net amortization of fixed-income securities
        		-47,000,000  -26,000,000 -34,000,000 -21,000,000  -3,400,000 -12,600,000 -7,500,000  -2,100,000    -27,600,000 2,200,000 27,000,000  35,100,000 30,400,000 31,700,000  29,900,000 23,600,000 18,900,000  12,200,000 1,700,000 200,000  6,500,000 8,200,000 15,000,000 
          amortization of equity-based compensation
        		16,000,000 -87,000,000 42,000,000 32,000,000 16,000,000 -81,800,000 37,300,000 31,700,000 16,800,000 -83,400,000 42,900,000 27,900,000 15,900,000 -22,800,000 -400,000 9,100,000 17,300,000 -65,600,000 41,800,000 11,100,000 15,800,000 -13,800,000 -5,200,000 -1,400,000 23,300,000 -15,700,000 -27,400,000 26,400,000 19,600,000 -50,900,000 15,800,000 20,300,000 17,200,000 
          net realized losses on securities
        		120,000,000  -295,000,000 -387,000,000 212,000,000  -287,400,000 126,300,000 -155,600,000  149,000,000    216,400,000     -461,800,000 -585,300,000    553,600,000       -32,800,000 48,200,000 
          net losses on disposition of property and equipment
        		3,000,000  1,000,000 -2,000,000 3,000,000  -800,000 600,000 -1,700,000  16,800,000    3,300,000     1,600,000 -1,100,000  3,000,000 1,700,000 100,000    5,100,000  5,700,000 500,000 1,200,000 
          changes in:
        		                                 
          premiums receivable
        		-2,252,000,000  -113,000,000 405,000,000 -2,442,000,000  -590,900,000 -352,000,000 -2,234,300,000  -134,700,000 138,100,000 -1,994,500,000  -305,900,000 -42,800,000 -1,119,500,000  -810,500,000 -124,800,000 -1,058,700,000             
          reinsurance recoverables
        		80,000,000  90,000,000 252,000,000 316,000,000  -100,000 122,000,000 90,500,000  185,700,000 99,300,000 215,900,000  -1,345,600,000 63,800,000 -44,500,000  -335,800,000 -113,500,000 -123,800,000            34,300,000 
          prepaid reinsurance premiums
        		-1,000,000  48,000,000 43,000,000 43,000,000  66,800,000 -81,000,000 40,000,000  7,900,000 26,700,000 25,900,000  96,800,000 -9,200,000 2,500,000  -33,800,000 54,900,000 -299,500,000  -102,100,000 76,900,000 188,300,000         
          deferred acquisition costs
        		-87,000,000  -54,000,000 -42,000,000 -107,000,000  -93,300,000 -120,100,000 -130,800,000  -46,500,000 -58,800,000 -82,400,000  -86,800,000 -90,700,000 -52,100,000  -70,100,000 -51,500,000 -71,900,000             
          income taxes
        		830,000,000 139,000,000 35,000,000 -840,000,000 667,000,000 48,800,000 -25,600,000 -950,700,000 609,500,000 227,600,000 234,700,000 -267,700,000 106,600,000 620,500,000 -214,400,000 -453,400,000 76,200,000 354,600,000 -75,200,000 -364,800,000 283,800,000 25,900,000 -668,700,000 461,900,000 128,700,000 -4,200,000 22,300,000 -307,800,000 465,200,000 -39,200,000 23,000,000 -179,100,000 181,100,000 
          unearned premiums
        		2,674,000,000  487,000,000 -277,000,000 2,754,000,000  1,092,100,000 773,100,000 2,773,600,000  691,600,000 225,800,000 2,550,700,000  522,100,000 283,400,000 1,375,600,000  1,115,500,000 443,100,000 1,608,400,000  1,143,700,000 414,500,000 252,300,000  729,800,000 193,100,000 917,100,000  763,300,000 408,100,000 934,300,000 
          loss and loss adjustment expense reserves
        		1,067,000,000  951,000,000 1,332,000,000 765,000,000  1,456,300,000 1,774,200,000 441,800,000  824,000,000 1,726,900,000 667,100,000  2,819,800,000 1,057,800,000 590,100,000  2,030,700,000 1,683,100,000 797,900,000  1,077,200,000 205,500,000 201,100,000  801,400,000 692,000,000 475,800,000  550,000,000 741,800,000 242,100,000 
          accounts payable, accrued expenses, and other liabilities
        		-788,000,000 -2,165,000,000 1,529,000,000 216,000,000 334,000,000 -1,574,300,000 542,600,000 599,900,000 457,800,000 -1,076,600,000 329,100,000 194,500,000 565,500,000 -568,000,000 110,000,000 -108,600,000 545,100,000 -1,344,600,000 315,200,000 337,700,000 380,100,000 -267,700,000    -873,400,000 314,700,000 314,300,000 291,500,000 -1,062,400,000 332,400,000 417,200,000 283,200,000 
          other
        		-141,000,000 239,000,000 -196,000,000 88,000,000 -34,000,000 253,100,000 12,800,000 -172,100,000 -65,800,000 225,400,000 -74,500,000 -59,100,000 -82,200,000 44,900,000 14,800,000 -236,000,000 236,400,000 -20,500,000 79,300,000 15,500,000 -15,300,000 29,600,000 4,300,000 -27,700,000 34,200,000 -186,100,000    45,800,000   24,200,000 
          net cash from operating activities
        		4,367,000,000 -4,535,000,000 5,195,000,000 4,040,000,000 5,143,000,000 -8,592,700,000 4,610,500,000 3,265,800,000 4,235,400,000 -7,969,800,000 3,419,500,000 2,337,000,000 2,449,500,000 -5,531,000,000 2,027,300,000 1,389,600,000 2,502,300,000 -4,598,100,000 2,371,200,000 2,323,900,000 2,614,500,000 -1,405,200,000 1,479,700,000 2,252,800,000 1,625,800,000 -2,952,800,000 1,758,700,000 1,506,200,000 1,868,500,000 -4,273,000,000 1,718,200,000 1,736,200,000 1,747,100,000 
          capital expenditures
        		-63,000,000 0 -66,000,000 -102,000,000 -59,000,000 0 -56,700,000 -67,900,000 -50,200,000 0 -36,300,000 -90,400,000 -43,200,000 0 -108,300,000 -63,700,000 -73,000,000 0 -89,800,000 -48,000,000 -50,500,000 0 0 0 0 0 0 0 0 0 0 0 0 
          free cash flows
        		4,304,000,000 -4,535,000,000 5,129,000,000 3,938,000,000 5,084,000,000 -8,592,700,000 4,553,800,000 3,197,900,000 4,185,200,000 -7,969,800,000 3,383,200,000 2,246,600,000 2,406,300,000 -5,531,000,000 1,919,000,000 1,325,900,000 2,429,300,000 -4,598,100,000 2,281,400,000 2,275,900,000 2,564,000,000 -1,405,200,000 1,479,700,000 2,252,800,000 1,625,800,000 -2,952,800,000 1,758,700,000 1,506,200,000 1,868,500,000 -4,273,000,000 1,718,200,000 1,736,200,000 1,747,100,000 
          cash flows from investing activities
        		                                 
          purchases:
        		                                 
          fixed maturities
        		-19,291,000,000  -8,558,000,000 -9,030,000,000 -17,324,000,000  -11,303,100,000 -11,244,200,000 -13,288,200,000  -6,585,300,000 -6,251,400,000 -6,119,500,000  -4,340,400,000 -2,878,900,000 -11,453,400,000  -6,857,700,000 -7,943,100,000 -10,421,400,000  -39,724,100,000 6,333,300,000 7,415,900,000  3,950,800,000 3,947,400,000 4,214,700,000  743,500,000 2,223,700,000 1,692,400,000 
          equity securities
        		-57,000,000  -56,000,000 -1,000,000 -86,000,000  -78,000,000 -200,000 -32,400,000  -2,100,000 -3,300,000 -17,800,000  -35,400,000 -16,800,000 -74,300,000  -48,800,000 -219,400,000 -196,700,000  -1,163,900,000 101,100,000 281,000,000  44,100,000 92,600,000 39,000,000  313,500,000 32,000,000 428,000,000 
          sales:
        		                                 
          maturities, paydowns, calls, and other:
        		                                 
          net (purchases) sales of short-term investments
        		7,919,000,000  604,000,000 535,000,000 -1,964,000,000  -16,800,000 607,900,000 479,200,000  -281,900,000 1,053,100,000 360,800,000  398,500,000 -4,078,200,000 413,100,000  622,300,000 610,200,000 2,976,800,000             
          net change in unsettled security transactions
        		243,000,000  220,000,000 6,000,000 172,000,000  394,400,000 57,900,000 61,800,000  -80,700,000 225,200,000 57,200,000                     
          purchases of property and equipment
        		-63,000,000  -66,000,000 -102,000,000 -59,000,000  -56,700,000 -67,900,000 -50,200,000  -36,300,000 -90,400,000 -43,200,000  -108,300,000 -63,700,000 -73,000,000  -89,800,000 -48,000,000 -50,500,000             
          sales of property and equipment
        		14,000,000  18,000,000 39,000,000 13,000,000  18,700,000 42,300,000 3,500,000  6,200,000 24,500,000 4,300,000  4,400,000 5,100,000 6,500,000  51,600,000 4,000,000 7,500,000  8,700,000 1,300,000 3,500,000  15,300,000 18,400,000 6,200,000  1,400,000 5,200,000 1,500,000 
          net cash from investing activities
        		2,637,000,000 4,622,000,000 -5,047,000,000 -4,040,000,000 -2,341,000,000 8,604,600,000 -4,420,800,000 -3,262,500,000 -3,124,300,000 8,182,100,000 -3,352,100,000 -2,867,000,000 -2,277,200,000 5,446,700,000 -1,781,500,000 -1,377,100,000 -3,802,500,000 5,359,900,000 -1,556,600,000 -2,243,400,000 224,900,000 1,401,500,000            
          cash flows from financing activities
        		                                 
          dividends paid to common shareholders
        		-7,972,000,000 -59,000,000 -58,000,000 -59,000,000 -2,695,000,000 -58,900,000 -58,600,000 -58,600,000 -497,900,000 -58,500,000 -58,500,000 -58,500,000 -58,500,000 -58,500,000 -58,500,000 -58,500,000 -58,500,000 -935,000,000 -58,500,000 -58,500,000 -2,694,500,000 -58,600,000            
          acquisition of treasury shares for equity award tax liabilities
        		-43,000,000  -37,000,000 -1,000,000 -54,000,000  -82,800,000                           
          acquisition of treasury shares acquired in open market
        		-435,000,000 -59,000,000 -3,000,000   100,000 -3,000,000   -18,200,000 -20,400,000   -19,900,000    -55,500,000 -35,300,000 -10,200,000 -54,800,000 -35,400,000            
          net proceeds from debt issuances
        		1,487,000,000          0    0 0 1,486,000,000      0 0 986,300,000         
          net cash from financing activities
        		-6,963,000,000 -118,000,000 -98,000,000 -72,000,000 -2,749,000,000 -59,300,000 -144,400,000 -69,500,000 -1,042,800,000 -129,800,000 -108,500,000 420,900,000 -104,600,000 -78,900,000 -121,000,000 -59,300,000 1,385,400,000 -970,800,000 -643,700,000 -89,100,000 -2,792,700,000 140,000,000        428,000,000 -52,800,000 500,000 354,800,000 
          increase in cash, cash equivalents, restricted cash, and restricted cash equivalents
        		41,000,000  50,000,000 -72,000,000 53,000,000  45,300,000 -66,200,000 68,300,000  -41,100,000 -109,100,000 67,700,000  124,800,000 -46,800,000 85,200,000                 
          cash, cash equivalents, restricted cash, and restricted cash equivalents – january 1
        		138,000,000  0 0 154,000,000  0 0 99,600,000  0 0 220,900,000  0 0 202,100,000                 
          cash, cash equivalents, restricted cash, and restricted cash equivalents – march 31
        		179,000,000    207,000,000    167,900,000    288,600,000    287,300,000                 
          allowance for credit losses, beginning of period
        		552,000,000  28,000,000 13,000,000 460,000,000  200,000 -41,400,000 369,100,000  3,000,000                       
          increase in allowance1
        		183,000,000  35,000,000 23,000,000 153,000,000  39,600,000 21,200,000 106,800,000  32,200,000                       
          write-offs2
        		-207,000,000  -48,000,000 -8,000,000 -140,000,000  20,300,000 20,400,000 -148,200,000  -17,900,000                       
          allowance for credit losses, end of period
        		528,000,000  15,000,000 28,000,000 473,000,000  60,100,000 200,000 327,700,000  17,300,000                       
          undistributed income from subsidiaries
        		                                 
          intercompany receivable
        		                                 
          additional investments in equity securities of consolidated subsidiaries
        		                                 
          received from (paid to) investment subsidiary
        		                                 
          acquisition of treasury shares for restricted stock tax liabilities
        		        -37,100,000 -42,700,000 -19,300,000 -300,000 -32,700,000 -500,000 -46,700,000 -800,000 -28,700,000 -300,000 -36,500,000 -400,000 -30,000,000 -1,700,000            
          redemption of preferred shares
        		                                 
          dividends paid to preferred shareholders
        		     -200,000 0 0 -7,800,000 -10,400,000 -10,300,000 -9,500,000 -13,400,000 0 -13,400,000 0 -13,400,000 0 -13,400,000 0 -13,400,000 0            
          net proceeds from debt issuance
        		                               0 589,500,000 
          change in cash
        		                                 
          cash – beginning of year
        		                                 
          cash – end of year
        		                                 
          cash, cash equivalents, restricted cash, and restricted cash equivalents – september 30
        		                                 
          cash, cash equivalents, restricted cash, and restricted cash equivalents – june 30
        		                                 
          cash flows from operating activities:
        		                                 
          cash flows from investing activities:
        		                                 
          cash flows from financing activities:
        		                                 
          cash - beginning of year
        		                                 
          cash - end of year
        		                                 
          redemption of serial preferred shares, series b
        		      0 0 -500,000,000                         
          acquisition of protective insurance corporation
        		                                 
          payments of debt
        		                 0                
          amortization of intangible assets
        		          2,900,000 3,100,000 5,400,000  5,400,000 5,500,000 14,600,000  14,600,000 14,300,000 14,200,000  14,200,000 14,100,000 14,500,000  15,800,000 18,000,000 17,900,000  18,000,000 18,000,000 18,000,000 
          goodwill impairment
        		              0                   
          net amortization (accretion) of fixed-income securities
        		            -5,000,000                     
          net realized (gains) losses on securities
        		            -71,800,000    445,300,000                 
          net (gains) losses on disposition of property and equipment
        		            16,500,000    3,300,000                 
          (paid to) received from investment subsidiary
        		                                 
          acquisition of additional shares of arx holding corp.
        		                                 
          serial preferred shares, no par value
        		                                 
          balance, beginning of period
        		              0     0 493,900,000  0 0 493,900,000    493,900,000  0 0 581,700,000 
          balance, end of period
        		              0     0 493,900,000  0 0 493,900,000    493,900,000  0 0 493,900,000 
          common shares, 1.00 par value
        		                                 
          treasury shares purchased
        		              -300,000     700,000 -900,000             
          net restricted equity awards issued/vested
        		                   -700,000 900,000  500,000 -800,000 1,000,000    1,200,000  1,300,000 100,000 1,400,000 
          paid-in capital
        		                                 
          reinvested dividends on restricted stock units
        		              0     0 400,000  0 100,000 300,000    300,000  0 300,000 500,000 
          retained earnings
        		                                 
          cash dividends declared on common shares
        		              0     0 -58,400,000             
          cash dividends declared on serial preferred shares, series b
        		                                 
          accumulated other comprehensive income
        		                                 
          other comprehensive income
        		              -97,700,000     630,300,000 -539,400,000  -592,000,000 504,600,000 63,000,000    301,300,000     
          total shareholders’ equity
        		              -876,500,000     839,100,000 17,836,500,000  1,416,600,000 2,319,100,000 14,351,500,000    12,110,700,000  858,000,000 677,600,000 10,323,200,000 
          nine months ended september 30,
        		                                 
          net unsettled security transactions
        		              74,700,000 -356,000,000 212,600,000  -12,400,000 49,000,000 267,600,000  191,300,000 -320,100,000 586,100,000  -17,000,000    -356,900,000 278,500,000 89,400,000 
          acquisition of protective insurance corporation, net of cash, cash equivalents, and restricted cash equivalents acquired
        		                                 
          payment of acquired company debt
        		                                 
          six months ended june 30,
        		                                 
          acquisition of protective insurance corporation, net of cash, cash equivalents, and restricted cash acquired
        		                                 
          loan to arx holding corp.
        		                                 
          change in cash, cash equivalents, and restricted cash
        		                                 
          cash, cash equivalents, restricted cash - beginning of year
        		                                 
          cash, cash equivalents, restricted cash - end of year
        		                                 
          acquisition of protective insurance corporation, net of cash, cash equivalents, and restricted cash acquired1
        		                  0               
          payment of acquired company debt1
        		                  0               
          proceeds from exercise of equity options
        		                      0    0    0 2,700,000 600,000 
          cash, cash equivalents, and restricted cash – january 1
        		                  0 0 76,500,000  0 0 227,400,000  0 0 75,000,000  0   
          adjustment to carrying amount of redeemable noncontrolling interest
        		                        6,900,000      4,600,000   
          attributable to noncontrolling interest
        		                              -3,000,000 600,000 4,000,000 
          increase in cash, cash equivalents, and restricted cash
        		                   -8,600,000 46,700,000    143,000,000   -65,800,000 83,700,000     
          net income attributable to progressive
        		                    1,480,000,000 4,173,800,000 -259,600,000 1,097,700,000 692,700,000 3,128,600,000   1,078,400,000 264,700,000 928,400,000 704,200,000 718,000,000 
          accumulated other comprehensive income attributable to progressive
        		                                 
          three months ended march 31,
        		                    2,021,000,000    2,020,000,000    2,019,000,000    2,018,000,000 
          cash, cash equivalents, and restricted cash – march 31
        		                    123,200,000    370,400,000    158,700,000     
          adjustments to reconcile net income attributable to progressive to net cash from operating activities:
        		                                 
          acquisition of additional shares - arx
        		                                 
          net proceeds from preferred stock issuance
        		                                 
          decrease in cash, cash equivalents, and restricted cash
        		                                 
          cash, cash equivalents, and restricted cash – september 30
        		                                 
          cash, cash equivalents, and restricted cash – june 30
        		                                 
          net sales of short-term investments
        		                                 
          undistributed (income) income from subsidiaries
        		                                 
          (gains) losses on extinguishment of debt
        		                                 
          acquisition of an insurance company
        		                                 
          reacquisitions of debt
        		                                 
          issuance of serial preferred shares, series b
        		                              0 0 493,900,000 
          cumulative effect of change in accounting principle
        		                                 
          reclassification of disproportionate tax effects
        		                                 
          net proceeds from issuance of serial preferred shares, series b
        		                              0 0 493,900,000 
          net sales (purchases) of short-term investments
        		                                 
          undistributed loss from subsidiaries
        		                                 
          losses on extinguishment of debt
        		                                 
          loan to arx holding corp.1
        		                                 
          tax benefit from vesting of equity-based compensation
        		                                 
          cumulative effect of change in accounting principle1
        		                              0 0 1,300,200,000 
          reclassification of disproportionate tax effects1
        		                              0 0 4,300,000 
          other losses
        		                                 
          acquisition of an insurance company, net of cash acquired
        		                                 
          redemption/reacquisition of subordinated debt
        		                                 
          effect of exchange rate changes on cash
        		                                 
          collateral on derivative positions
        		                                 
          cash, cash equivalents, and restricted cash - january 1
        		                                275,300,000 
          cash, cash equivalents, and restricted cash - march 31
        		                                196,600,000 
          acquisition of arx
        		                                 
          dividends paid to shareholders