7Baggers

Unum Group
(NYSE:UNM) 

UNM stock logo

Unum Group, together with its subsidiaries, provides financial protection benefit solutions primarily in the United States, the United Kingdom, and Poland. It operates through Unum US, Unum International, Colonial Life, and Closed Block segments. The company offers group long-term and short-term dis...

Founded: 1848
Full Time Employees: 10,300
Sector: Financial Services
Industry: Insurance-Life

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    Unit: USD 
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      Unit: USD2026-03-31 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 2018-09-30 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 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-09-30 2012-03-31 2011-03-31 2010-09-30 2010-03-31 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 2007-09-30 2007-06-30 2007-03-31 2006-09-30 2006-06-30 2006-03-31 2005-09-30 2005-06-30 2005-03-31 2004-09-30 2004-06-30 2004-03-31 2003-09-30 2003-06-30 2003-03-31 2002-12-31 2002-09-30 2002-06-30 2002-03-31 
                                                                                 
        assets
                                                                                 
        investments
                                                                                 
        fixed maturity securities - at fair value
      33,300,800,000 33,190,200,000 35,966,000,000 35,751,400,000 35,629,900,000 37,783,500,000 35,952,800,000 36,247,800,000 36,833,900,000 34,070,700,000 35,374,100,000 36,160,200,000 34,840,800,000 34,148,200,000 36,576,400,000 39,946,000,000 43,336,000,000 43,628,300,000 43,513,800,000 42,076,000,000 44,137,300,000 49,270,200,000 48,233,400,000 45,291,500,000 47,443,700,000 47,435,000,000 46,440,200,000 44,782,600,000 43,071,300,000 43,360,900,000 44,500,100,000 45,422,600,000 45,118,600,000 44,623,200,000 46,315,500,000 45,862,000,000 44,699,200,000 44,401,500,000 45,852,700,000 44,715,200,000 44,900,900,000 43,666,800,000 42,597,600,000 42,594,200,000 44,436,500,000 44,744,700,000 42,411,200,000    37,593,700,000 34,902,800,000 32,417,300,000 33,166,800,000 35,402,200,000 35,327,200,000 35,192,400,000 34,669,300,000 35,251,800,000 34,721,300,000 33,047,900,000 33,633,200,000 34,532,700,000 34,027,400,000 32,614,600,000           
        mortgage loans
      2,066,300,000 2,129,800,000 2,172,500,000 2,187,700,000 2,224,500,000 2,238,900,000 2,261,100,000 2,298,800,000 2,318,200,000 2,321,500,000 2,372,800,000 2,390,000,000 2,435,400,000 2,476,400,000 2,490,700,000 2,529,500,000 2,560,400,000 2,499,400,000 2,387,100,000 2,402,200,000 2,432,100,000 2,406,500,000 2,434,400,000 2,452,100,000 2,397,000,000 2,321,700,000 2,218,900,000 2,206,600,000 2,222,000,000 2,190,600,000 2,200,800,000 2,145,300,000 2,081,200,000 2,068,400,000 1,970,400,000 1,941,300,000 1,881,300,000 1,925,900,000 1,896,500,000 1,807,500,000 1,823,800,000 1,843,300,000 1,776,100,000 1,735,300,000 1,730,400,000 1,665,200,000 1,615,900,000 1,556,700,000 1,464,200,000 1,384,300,000 1,375,100,000 1,300,600,000 1,307,000,000 1,238,500,000 1,137,800,000 1,087,900,000 1,010,700,000 1,004,200,000 1,006,200,000 893,200,000 874,300,000 783,200,000 661,100,000 600,300,000 521,100,000 432,400,000 441,700,000 460,300,000 500,700,000 516,100,000 558,900,000 599,900,000 680,400,000 726,700,000 894,700,000 
        policy loans
      3,702,900,000 3,584,100,000 3,604,800,000 3,636,400,000 3,617,200,000 3,625,600,000 3,535,200,000 3,579,100,000 3,620,200,000 3,596,600,000 3,493,300,000 3,552,500,000 3,601,200,000 3,640,800,000 3,524,300,000 3,573,500,000 3,662,900,000 3,691,400,000 3,608,500,000 3,628,800,000 3,683,900,000 3,669,100,000 3,684,000,000 3,743,500,000 3,779,500,000 3,763,600,000 3,633,100,000 3,673,300,000 3,720,200,000 3,545,400,000 3,573,300,000 3,567,500,000 3,409,800,000 3,447,400,000 3,432,800,000 3,316,200,000 3,343,900,000 3,406,000,000 3,283,200,000 3,355,500,000 3,222,400,000 3,268,300,000 3,242,500,000 3,113,100,000 3,141,400,000 3,117,000,000 3,049,000,000 2,977,600,000 2,992,600,000 2,889,900,000 2,857,200,000 2,729,600,000 2,732,200,000 2,726,600,000 2,618,100,000 2,622,100,000 3,607,300,000 3,505,800,000 3,431,500,000 3,319,600,000 3,299,500,000 3,221,600,000 3,074,400,000 3,074,000,000 3,073,500,000 2,874,200,000 2,874,500,000 2,877,100,000 2,739,200,000 2,739,300,000 2,741,100,000 2,743,800,000 2,685,300,000 2,614,000,000 2,608,100,000 
        other long-term investments
      1,664,800,000 1,682,200,000 1,659,900,000 1,689,800,000 1,694,400,000 1,682,800,000 1,646,300,000 1,619,800,000 1,579,400,000 1,506,900,000 1,503,200,000 1,479,400,000 1,440,100,000 1,430,400,000 1,391,600,000 1,280,400,000 1,203,000,000 1,124,500,000 1,062,900,000 995,300,000 960,200,000 931,000,000 933,900,000 917,500,000 844,200,000 752,300,000 735,000,000 696,700,000 694,200,000 687,500,000 706,500,000 654,500,000 661,300,000 645,300,000 634,300,000 592,200,000 572,200,000 590,200,000 603,100,000 558,800,000 570,800,000 565,000,000 564,500,000 583,600,000 592,800,000 650,900,000 635,500,000 540,100,000 533,100,000 252,400,000 254,600,000 285,600,000 458,100,000 171,300,000 135,500,000 196,900,000 110,600,000 118,100,000 106,000,000 118,500,000 118,100,000 121,700,000 75,100,000 75,900,000 74,300,000 69,700,000 72,600,000 78,000,000    38,600,000    
        short-term investments
      2,055,300,000 2,602,000,000 2,286,600,000 2,965,300,000 2,540,300,000 1,990,800,000 1,793,500,000 1,601,500,000 1,610,700,000 1,487,200,000 1,652,800,000 1,322,800,000 1,394,800,000 1,183,200,000 1,336,100,000 1,295,500,000 1,388,000,000 1,472,700,000 1,596,600,000 756,100,000 1,470,000,000 2,086,700,000 2,601,900,000 1,384,400,000 1,294,500,000 1,312,800,000 1,367,200,000 1,194,400,000 1,238,200,000 1,433,900,000 712,600,000 1,046,500,000 1,120,800,000 772,400,000 755,600,000 1,402,300,000 743,300,000 598,100,000 706,700,000 942,400,000 1,047,000,000 1,189,500,000 941,000,000 867,800,000 1,200,500,000 1,590,200,000 1,441,200,000 600,900,000 984,100,000 662,100,000 1,036,200,000 858,800,000 683,700,000 950,100,000 1,074,200,000 1,395,300,000 1,010,000,000 757,300,000 620,700,000 489,300,000 450,100,000 134,600,000 311,100,000 232,100,000 252,000,000 624,800,000 825,100,000 370,100,000 875,100,000 1,111,500,000 646,900,000 218,400,000 524,900,000 220,900,000 320,800,000 
        total investments
      42,790,100,000 43,188,300,000 45,689,800,000 46,230,600,000 45,706,300,000 47,321,600,000 45,188,900,000 45,347,000,000 45,962,400,000 42,982,900,000 44,396,200,000 44,904,900,000 43,712,300,000 42,879,000,000 45,319,100,000 48,624,900,000 52,150,300,000 52,416,300,000 52,168,900,000 49,858,400,000 52,683,500,000 58,363,500,000 57,887,600,000 53,789,000,000 55,758,900,000 55,585,400,000 54,394,400,000 52,553,600,000 50,945,900,000 51,218,300,000 51,693,300,000 52,836,400,000 52,391,700,000 51,556,700,000 53,108,600,000 53,114,000,000 51,239,900,000 50,921,700,000 52,342,200,000 51,379,400,000 51,564,900,000 50,532,900,000 49,121,700,000 48,894,000,000 51,101,600,000 51,768,000,000 49,152,800,000 45,990,400,000 47,721,600,000 43,907,800,000 43,116,800,000 40,077,400,000 37,598,300,000 38,267,100,000 40,380,900,000 40,648,100,000 40,951,200,000 40,074,900,000 40,434,100,000 39,559,900,000 37,807,900,000 37,912,300,000 38,685,500,000 38,040,700,000 36,574,000,000 35,360,800,000 34,091,100,000 36,546,700,000 34,618,900,000 34,612,600,000 31,681,100,000 31,152,000,000 30,375,400,000 28,586,200,000 28,146,100,000 
        other assets
      2,350,400,000 2,429,500,000 1,600,400,000 1,634,700,000 1,635,800,000 1,632,800,000 1,631,000,000 1,655,800,000 1,661,700,000 1,640,900,000 1,656,400,000 1,677,200,000 1,786,300,000 1,797,600,000 1,810,700,000 1,834,900,000 1,825,600,000 1,763,900,000 1,773,900,000 1,809,700,000 1,752,300,000 847,400,000 859,800,000 885,300,000 884,000,000 890,000,000 908,000,000 906,300,000 709,400,000 702,800,000 641,400,000 631,900,000 626,500,000 619,900,000 647,800,000 624,800,000 632,900,000 660,000,000 656,200,000 701,700,000 673,600,000 658,500,000 632,200,000 623,600,000 619,200,000 644,000,000 642,800,000 650,600,000 629,400,000 610,300,000 604,400,000 600,000,000 597,900,000 605,200,000 608,900,000 614,500,000 612,400,000 611,400,000 615,400,000 555,300,000 546,400,000 553,400,000 942,100,000 968,200,000 980,600,000 1,527,500,000 1,524,600,000 1,346,200,000 1,451,200,000 1,476,500,000 1,416,400,000  1,579,600,000 1,482,800,000 1,400,600,000 
        cash and bank deposits
      192,600,000 327,900,000 1,194,800,000 237,700,000 162,800,000 163,400,000 132,700,000 279,100,000 146,000,000 165,900,000 108,300,000 123,100,000 119,200,000 143,300,000 151,400,000 106,600,000 75,000,000 121,700,000 123,100,000 561,800,000 197,000,000 103,800,000 165,600,000 337,200,000 84,100,000 77,000,000 60,800,000 62,100,000 214,200,000 99,500,000 308,900,000 70,100,000 117,000,000 107,000,000 87,900,000 93,800,000 120,700,000 109,300,000 84,100,000 60,600,000 112,000,000 76,200,000 63,000,000 47,800,000 102,000,000 53,600,000 102,500,000 56,600,000 78,600,000 51,700,000 220,600,000 48,700,000 50,100,000 99,300,000 94,100,000 84,800,000 144,600,000 126,800,000 135,500,000 32,200,000 63,200,000 61,000,000 63,700,000 94,900,000 60,500,000 130,100,000 119,200,000 131,300,000 124,500,000 133,900,000 139,700,000 144,700,000 112,800,000 95,400,000 139,300,000 
        accounts and premiums receivable
      1,614,400,000 1,462,200,000 1,582,700,000 1,557,100,000 1,459,000,000 1,495,700,000 1,578,500,000 1,594,000,000 1,543,700,000 1,507,700,000 1,605,500,000 1,557,100,000 1,482,100,000 1,475,400,000 1,563,900,000 1,571,600,000 1,519,900,000 1,545,900,000 1,627,600,000 1,656,100,000 1,519,300,000 1,577,900,000 1,625,500,000 1,639,600,000 1,602,900,000 1,675,800,000 1,716,400,000 1,712,200,000 1,693,000,000 1,711,400,000 1,736,700,000 1,697,700,000 1,629,100,000 1,695,400,000 1,625,900,000 1,654,200,000 1,661,000,000 1,621,200,000 1,657,100,000 1,658,800,000 1,641,800,000 1,664,400,000 1,650,900,000 1,697,300,000 1,695,100,000 1,704,900,000 1,713,800,000 1,673,800,000 1,728,600,000 1,726,900,000 1,758,500,000 1,788,100,000 1,769,900,000 1,906,100,000 1,933,100,000 1,953,700,000 1,949,200,000 2,110,100,000 1,991,900,000 2,041,400,000 2,059,700,000 2,002,700,000 1,993,900,000 2,118,200,000 2,050,100,000 2,079,500,000 2,146,700,000 2,115,500,000 2,037,900,000 2,090,600,000 2,185,300,000 1,711,300,000 1,709,400,000 2,382,100,000 1,900,900,000 
        reinsurance recoverable
      11,310,900,000 11,683,200,000 7,974,900,000 8,121,900,000 8,296,400,000 8,637,600,000 8,658,900,000 8,843,600,000 9,108,400,000 8,855,200,000 9,383,100,000 9,628,700,000 10,218,600,000 10,289,700,000 10,377,700,000 10,640,300,000 10,919,300,000 11,105,800,000 11,303,400,000 11,550,200,000 10,666,000,000 4,895,900,000 4,786,200,000 4,666,200,000 4,780,700,000 4,807,200,000 4,752,800,000 4,717,700,000 4,684,000,000 4,732,500,000 4,815,500,000 4,893,700,000 4,850,600,000 4,842,800,000 4,845,600,000 4,801,600,000 4,798,500,000 4,770,600,000 4,882,500,000 4,859,200,000 4,854,200,000 4,837,600,000 4,870,700,000 4,817,900,000 4,898,600,000 4,824,700,000 4,824,400,000 4,787,600,000 5,050,400,000 4,860,800,000 5,010,200,000 5,002,900,000 4,942,500,000 5,082,100,000 5,100,100,000 5,143,800,000 5,233,600,000 5,541,400,000 5,558,100,000                 
        accrued investment income
      582,000,000 735,700,000 702,900,000 622,900,000 649,800,000 786,800,000 713,900,000 660,900,000 633,900,000 704,900,000 715,100,000 636,100,000 615,000,000 717,200,000 705,600,000 658,500,000 602,700,000 598,200,000 722,200,000 668,700,000 611,400,000 676,900,000 802,700,000 748,500,000 693,000,000 695,800,000 803,200,000 742,200,000 683,000,000 797,400,000 745,800,000 692,500,000 808,600,000 752,800,000 694,400,000 803,400,000 754,500,000 698,400,000 752,100,000 702,300,000 796,200,000 756,300,000 700,800,000 788,700,000 741,900,000 696,800,000 736,900,000 730,700,000 685,900,000 704,900,000 656,000,000 621,200,000 629,100,000 642,600,000 602,200,000 606,900,000 700,200,000 654,000,000 660,000,000 675,100,000 635,700,000 638,000,000 649,500,000 599,900,000 603,500,000 576,200,000 551,100,000 553,700,000 607,000,000 575,500,000 577,600,000 589,100,000 607,000,000 578,000,000 592,100,000 
        deferred acquisition costs
      2,974,400,000 2,880,400,000 2,940,300,000 2,893,200,000 2,842,800,000 2,823,500,000 2,791,500,000 2,754,700,000 2,714,500,000 2,668,700,000 2,647,200,000 2,602,400,000 2,252,300,000 2,254,600,000 2,247,600,000 2,229,200,000 2,207,900,000 2,231,500,000 2,235,700,000 2,254,800,000 2,272,600,000 2,291,200,000 2,310,800,000 2,333,300,000 2,324,000,000 2,307,600,000 2,301,900,000 2,298,200,000 2,276,900,000 2,244,600,000 2,213,400,000 2,155,300,000 2,123,900,000 2,113,200,000 2,048,400,000 2,023,700,000 2,015,400,000 1,960,900,000 1,904,600,000 1,866,500,000 1,845,800,000 1,832,300,000 1,804,900,000 1,782,600,000 1,753,100,000 1,728,300,000 1,699,700,000 2,542,900,000 2,491,100,000 2,486,800,000 2,466,500,000 2,488,300,000 2,493,300,000 2,432,100,000 2,424,100,000 2,397,500,000 2,361,700,000 2,342,300,000 2,326,800,000                 
        goodwill
      353,000,000 354,000,000 353,300,000 350,600,000 349,100,000 352,000,000 349,600,000 349,600,000 349,900,000 347,900,000 349,700,000 348,400,000 347,600,000 344,400,000 347,700,000 350,800,000 352,200,000 352,100,000 353,300,000 353,000,000 353,000,000 350,600,000 348,900,000 348,800,000 351,700,000 348,600,000 350,100,000 351,000,000 346,000,000 346,500,000 348,900,000 338,200,000 337,100,000 335,700,000 336,800,000 226,700,000 229,800,000 232,100,000 198,200,000 200,700,000 201,300,000 201,000,000 201,700,000 201,000,000 200,900,000 201,600,000 201,500,000 201,500,000 201,300,000 200,900,000 201,500,000 201,800,000 200,300,000 202,800,000 204,300,000 204,300,000 204,700,000 204,500,000 204,200,000 274,300,000 273,900,000 273,100,000 273,300,000 270,500,000 271,200,000 270,200,000 269,900,000 270,000,000 666,700,000 666,700,000 666,200,000 666,400,000 667,000,000 666,800,000 677,000,000 
        property and equipment
      509,300,000 496,600,000 499,100,000 496,300,000 487,600,000 495,200,000 483,400,000 483,900,000 485,300,000 463,300,000 460,000,000 456,100,000 451,700,000 442,400,000 447,500,000 454,900,000 462,700,000 462,500,000 499,800,000 500,600,000 498,000,000 508,800,000 518,100,000 540,700,000 534,100,000 568,300,000 556,100,000 548,200,000 521,000,000 510,800,000 508,400,000 489,900,000 497,100,000 501,200,000 509,700,000 510,900,000 515,200,000 529,600,000 537,500,000 531,400,000 528,300,000 519,400,000 508,800,000 504,700,000 499,000,000 497,700,000 497,400,000 482,700,000 467,800,000 447,100,000 429,700,000 423,900,000 417,100,000 405,400,000 402,700,000 396,900,000 386,700,000 383,900,000 377,900,000 371,000,000 373,200,000 375,200,000          417,900,000    
        deferred income tax
      37,200,000 120,300,000 305,600,000 314,800,000 369,700,000 431,900,000 516,000,000 519,200,000 649,400,000 617,100,000 582,900,000 489,800,000 449,800,000 523,100,000 149,900,000 202,800,000 458,400,000 424,800,000 405,400,000 319,200,000 416,100,000 210,500,000 155,600,000 47,300,000    30,200,000 157,400,000 85,500,000 128,900,000 231,800,000 247,300,000 188,500,000 358,500,000 315,800,000 233,300,000 73,400,000 173,300,000 432,700,000 419,700,000 312,600,000 186,300,000 101,400,000 232,500,000 347,200,000 88,900,000 471,200,000 432,700,000 379,100,000  77,900,000 472,100,000 280,700,000 70,400,000 169,700,000 247,800,000 47,500,000 290,500,000 730,800,000 400,700,000 543,700,000 964,700,000 1,337,000,000 930,200,000 931,200,000 572,200,000 924,300,000 1,342,300,000 1,316,900,000 955,400,000     
        total assets
      62,714,300,000 63,678,100,000 62,843,800,000 62,459,800,000 61,959,300,000 64,140,500,000 62,044,400,000 62,487,800,000 63,255,200,000 59,954,500,000 61,904,400,000 62,423,800,000 61,434,900,000 60,866,700,000 63,121,100,000 66,471,700,000 70,115,600,000 70,597,900,000 70,807,900,000 69,256,600,000 70,625,800,000 69,616,000,000 69,305,200,000 65,335,900,000 67,013,400,000 66,955,700,000 65,843,700,000 63,921,700,000 62,249,800,000 62,366,600,000 63,012,300,000 63,805,700,000 63,381,600,000 62,524,700,000 63,905,100,000 63,853,100,000 61,967,900,000 61,503,800,000 63,014,500,000 61,960,600,000 62,218,100,000 61,078,600,000 59,585,800,000 59,366,200,000 61,611,400,000 62,119,600,000 59,571,800,000 57,116,800,000 59,054,700,000 54,997,200,000 54,475,200,000 51,339,800,000 49,179,500,000 49,937,800,000 51,767,800,000 52,069,200,000 52,566,600,000 52,071,200,000 52,324,800,000 52,171,500,000 50,401,900,000 50,471,300,000 51,146,900,000 52,430,400,000 50,836,600,000 49,774,100,000 48,503,700,000 50,476,900,000 49,338,300,000 49,364,100,000 46,324,100,000 45,259,500,000 44,491,100,000 43,356,000,000 42,381,100,000 
        liabilities and stockholders' equity
                                                                                 
        liabilities
                                                                                 
        future policy benefits
      37,300,500,000 38,300,700,000 37,182,900,000 37,030,700,000 36,806,400,000 39,444,500,000 37,899,400,000 38,624,500,000 40,009,400,000 36,502,400,000 38,945,300,000 39,351,500,000                                                                
        policyholders' account balances
      5,736,000,000 5,659,900,000 5,633,300,000 5,620,800,000 5,633,700,000 5,661,300,000 5,660,300,000 5,639,000,000 5,667,700,000 5,744,500,000 5,692,400,000 5,709,600,000                                                                
        unearned premiums
      509,100,000 492,000,000 538,300,000 475,600,000 384,000,000 474,700,000 502,800,000 470,400,000 380,200,000 447,200,000 494,700,000 451,600,000 352,700,000 394,000,000 437,000,000 431,900,000 347,500,000 414,300,000 461,100,000 425,000,000 349,300,000 404,300,000 440,800,000 414,100,000 363,900,000 408,200,000 448,300,000 417,700,000 428,000,000 460,700,000 432,800,000 430,100,000 456,900,000 419,500,000 427,800,000 457,500,000 433,800,000 452,800,000 439,600,000 472,800,000 521,500,000 472,200,000 483,200,000 517,300,000 477,900,000 497,200,000 490,400,000 474,400,000 500,600,000 479,800,000 504,600,000 555,000,000 471,800,000 569,100,000 640,100,000 543,700,000 598,400,000 635,600,000 529,700,000 560,700,000 599,700,000 506,100,000 549,700,000         335,000,000 28,507,400,000   
        other policyholders’ funds
      1,472,600,000 1,485,300,000 1,513,100,000 1,522,800,000 1,526,700,000 1,507,700,000 1,567,200,000 1,582,400,000 1,615,700,000 1,631,900,000 1,701,500,000 1,726,900,000 1,750,400,000 1,756,000,000 1,778,800,000 1,816,900,000 1,790,900,000 1,763,100,000 1,751,000,000 1,736,100,000 1,663,900,000 1,626,600,000 1,649,400,000 1,599,300,000 1,599,700,000 1,588,600,000 1,597,000,000 1,608,200,000 1,551,400,000 1,611,400,000 1,635,600,000 1,606,900,000 1,627,500,000 1,641,200,000 1,619,600,000 1,641,400,000 1,672,900,000 1,656,700,000 1,677,900,000 1,650,800,000 1,685,900,000 1,672,200,000 1,636,000,000 1,639,500,000 1,635,800,000   1,674,600,000 1,651,900,000 1,649,900,000 1,623,500,000 1,653,300,000 1,676,800,000 1,708,000,000 1,776,000,000 1,799,900,000 1,846,500,000 1,919,300,000 2,004,400,000 2,060,400,000 2,134,700,000 2,191,200,000 2,275,100,000 2,339,100,000 2,380,300,000 2,444,500,000 2,465,900,000 2,487,600,000 2,527,600,000 2,559,600,000 2,553,200,000 2,554,900,000 2,558,300,000 2,550,600,000 2,566,900,000 
        income tax payable
      87,600,000 57,200,000 261,600,000 302,300,000 226,500,000 137,700,000 156,400,000 278,400,000 190,000,000 267,200,000 179,100,000 240,600,000 190,900,000 212,200,000 232,600,000 227,200,000 159,100,000 40,700,000 69,000,000   395,100,000 357,900,000 268,900,000 256,700,000 224,000,000 250,200,000 268,300,000   61,300,000 40,700,000 3,500,000 65,300,000  29,600,000 54,100,000 5,700,000 39,100,000 10,200,000 14,600,000 17,300,000   77,800,000 47,500,000 98,400,000 181,400,000 153,800,000 229,600,000 143,600,000 131,200,000 180,800,000 150,900,000 137,200,000 172,800,000 75,000,000 86,000,000 87,400,000                 
        long-term debt
      3,762,000,000 3,470,800,000 3,469,100,000 3,467,000,000 3,465,200,000 3,470,400,000 3,470,300,000 3,431,000,000 3,430,400,000 3,429,800,000 3,429,100,000 3,428,500,000 3,427,800,000 3,429,200,000 3,442,800,000 3,442,900,000 3,442,200,000 3,441,400,000 3,441,400,000 3,346,800,000 3,345,700,000 3,378,600,000 3,393,100,000 2,914,300,000 2,926,900,000 3,037,600,000 3,341,200,000 2,958,700,000 2,983,500,000 2,997,700,000 2,721,900,000 2,754,100,000 2,968,400,000 2,984,600,000 3,019,800,000 3,042,600,000 2,442,500,000 2,217,100,000 2,603,300,000 2,783,300,000 2,792,000,000 2,948,200,000 2,631,300,000 2,644,000,000 2,673,900,000 2,781,500,000 2,552,800,000 2,605,000,000 2,661,300,000 2,291,200,000 2,580,200,000 2,250,600,000 2,254,700,000 2,285,400,000 2,298,300,000 2,497,700,000 2,285,200,000 2,287,700,000 2,499,700,000 2,561,600,000 2,561,600,000 2,861,600,000 2,862,000,000 2,862,000,000 2,862,000,000 2,862,000,000 3,089,000,000 2,789,000,000 2,489,000,000 2,489,000,000 1,914,000,000 1,914,000,000 2,132,700,000 2,132,800,000 2,005,800,000 
        other liabilities
      2,913,100,000 2,990,400,000 2,614,000,000 2,519,200,000 2,650,100,000 2,464,300,000 2,296,200,000 2,216,400,000 2,283,400,000 2,284,300,000 2,190,500,000 2,241,900,000 2,334,400,000 2,529,200,000 2,615,100,000 2,594,700,000 2,585,900,000 2,999,300,000 2,890,100,000 2,847,800,000 2,471,400,000 1,998,300,000 2,022,200,000 1,864,500,000 1,880,500,000 1,820,600,000 1,827,200,000 1,790,300,000 1,763,700,000 1,672,400,000 1,658,500,000 1,699,400,000 1,668,000,000 1,673,600,000 1,449,500,000 1,458,500,000 1,524,900,000 1,550,000,000 1,508,900,000 1,290,300,000 1,245,600,000 1,137,100,000 1,486,700,000 1,411,100,000 1,845,600,000 1,704,700,000 1,714,800,000 1,512,500,000 1,678,400,000 1,323,900,000 1,577,800,000 1,597,200,000 1,730,800,000 1,424,900,000 1,333,700,000 1,320,100,000 1,206,000,000 1,351,200,000 1,392,000,000 1,332,400,000 1,345,700,000 1,323,300,000 1,377,000,000 1,406,300,000 1,398,600,000 1,379,600,000 1,880,300,000 1,312,700,000 1,401,100,000 1,431,900,000 1,390,400,000 1,399,100,000 1,381,400,000 1,357,900,000 1,384,500,000 
        total liabilities
      51,821,900,000 52,769,300,000 51,523,800,000 51,245,800,000 50,998,200,000 53,189,100,000 51,579,800,000 52,268,300,000 53,603,800,000 50,336,400,000 52,658,500,000 53,176,400,000 52,237,400,000 52,207,200,000 53,416,000,000 55,848,600,000 58,699,200,000 59,479,700,000 59,860,400,000 58,686,500,000 59,754,800,000 58,723,800,000 58,743,800,000 55,532,800,000 57,048,400,000 57,324,100,000 56,390,600,000 54,861,200,000 53,731,600,000 52,920,200,000 53,512,800,000 54,357,100,000 54,065,000,000 53,417,300,000 54,543,900,000 54,696,100,000 53,047,600,000 52,922,700,000 54,326,600,000 52,716,600,000 52,974,400,000 52,122,900,000 50,915,900,000 50,985,600,000 53,053,600,000 53,446,300,000 51,391,900,000 48,133,000,000 50,130,600,000 46,217,000,000 46,232,200,000 43,861,400,000 42,756,900,000 43,201,900,000 44,103,500,000 44,430,800,000 44,735,800,000 44,699,600,000 44,948,200,000 44,577,100,000 43,415,000,000 43,903,300,000 43,909,200,000 44,575,800,000 43,784,200,000 42,873,700,000 42,277,300,000 43,342,600,000 41,188,000,000 41,344,600,000 39,478,800,000 38,116,300,000 37,520,900,000 36,920,000,000 36,345,200,000 
        commitments and contingent liabilities - note 13
                                                                                 
        stockholders' equity
                                                                                 
        common stock
                                                                 34,400,000    30,000,000 30,000,000 29,800,000 29,800,000 29,800,000  29,800,000    24,300,000  
        authorized: 725,000,000 shares
                                                                                 
        issued: 196,635,349 and 196,194,941 shares
      19,600,000                                                                           
        additional paid-in capital
      1,602,100,000 1,585,700,000 1,578,400,000 1,568,700,000 1,489,600,000 1,563,300,000 1,558,800,000 1,548,200,000 1,547,800,000 2,454,300,000 2,444,900,000 2,431,800,000 2,441,000,000 2,432,300,000 2,417,400,000 2,395,800,000 2,408,100,000 2,398,500,000 2,386,800,000 2,380,800,000 2,376,200,000 2,371,300,000 2,364,100,000 2,357,300,000 2,348,100,000 2,342,300,000 2,335,600,000 2,328,500,000 2,314,300,000 2,308,600,000 2,302,400,000 2,295,200,000 2,282,900,000 2,277,400,000 2,263,000,000 2,258,700,000 2,253,600,000 2,239,200,000 2,230,700,000 2,651,200,000 2,646,200,000 2,640,800,000 2,623,800,000 2,619,700,000 2,613,400,000 2,604,200,000 2,600,400,000 2,572,400,000 2,611,100,000 2,603,400,000 2,578,500,000 2,564,600,000 2,553,500,000 2,539,300,000 2,531,000,000 2,522,800,000 2,506,200,000 2,501,900,000 2,196,600,000 2,195,500,000 2,190,500,000 1,620,700,000 1,617,500,000 1,615,100,000 1,613,100,000 1,587,200,000 1,586,000,000 1,611,400,000 1,607,100,000 1,606,600,000 1,087,600,000 1,086,800,000 1,085,200,000 1,082,800,000 1,077,500,000 
        accumulated other comprehensive loss
      -1,795,500,000 -2,167,300,000 -2,040,700,000 -2,178,800,000 -2,523,700,000 -2,729,700,000 -2,846,200,000 -2,940,000,000 -3,308,000,000 -3,150,600,000 -3,457,600,000 -3,162,300,000              -153,200,000 -242,500,000 -502,300,000                                                
        retained earnings
      13,498,900,000 13,248,600,000 13,287,200,000 13,025,800,000 12,914,000,000 12,642,400,000 12,074,600,000 11,754,100,000 11,431,500,000 13,888,700,000 13,758,100,000 13,430,400,000 12,912,100,000 12,698,300,000 12,353,700,000 12,043,800,000 11,853,200,000 11,754,800,000 11,487,600,000 11,363,200,000 11,269,600,000 11,192,300,000 11,019,200,000 10,812,000,000 10,728,700,000 10,491,500,000 10,308,900,000 10,083,100,000 9,670,800,000 10,012,400,000 9,777,800,000 9,327,200,000 9,126,700,000 8,927,400,000 8,542,400,000 8,353,200,000 8,160,600,000 7,814,100,000 7,472,900,000 8,658,000,000 8,478,900,000 8,273,800,000 7,899,700,000 7,732,400,000 7,548,500,000 7,173,400,000 6,793,500,000 7,112,300,000 6,864,400,000 6,491,600,000 6,117,500,000 5,923,600,000 5,667,000,000 5,510,100,000 5,428,200,000 5,213,800,000 4,943,900,000 4,783,900,000 4,656,000,000 4,675,200,000 4,764,500,000 4,661,600,000 4,495,100,000 4,464,700,000 4,315,500,000 4,073,100,000 3,927,500,000 3,942,500,000 4,896,400,000 4,809,800,000 4,729,400,000 5,011,400,000 4,981,700,000 4,908,200,000 4,854,300,000 
        treasury stock
      -2,432,700,000 -1,777,800,000 -1,524,500,000 -1,221,200,000 -938,300,000 -544,100,000 -342,100,000 -162,300,000 -39,300,000 -3,605,200,000 -3,530,400,000 -3,483,400,000 -3,429,800,000 -3,367,200,000 -3,324,600,000 -3,267,200,000 -3,229,700,000 -3,179,700,000 -3,179,700,000 -3,179,700,000 -3,179,700,000 -3,179,700,000 -3,179,700,000 -3,179,700,000 -3,179,700,000 -3,079,600,000 -2,979,500,000 -2,879,300,000 -2,628,900,000 -2,628,900,000 -2,528,800,000 -2,328,500,000 -2,228,300,000 -2,128,200,000 -1,925,200,000 -1,825,000,000 -1,724,900,000 -1,524,400,000 -1,306,300,000 -2,649,900,000 -2,549,400,000 -2,449,400,000 -2,299,200,000 -2,224,200,000 -2,125,800,000 -1,930,600,000 -1,705,300,000 -1,133,800,000 -1,081,700,000 -754,200,000 -754,200,000 -754,200,000 -754,200,000 -754,200,000 -404,200,000 -404,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000 -54,200,000  -54,200,000 -54,200,000 -9,200,000 
        total stockholders' equity
      10,892,400,000 10,908,800,000 11,320,000,000 11,214,000,000 10,961,100,000 10,951,400,000 10,464,600,000 10,219,500,000 9,651,400,000 9,618,100,000 9,245,900,000 9,247,400,000 9,197,500,000 8,659,500,000 9,705,100,000 10,623,100,000 11,416,400,000 11,118,200,000 10,947,500,000 10,570,100,000 10,871,000,000 10,892,200,000 10,561,400,000 9,803,100,000 9,965,000,000 9,631,600,000 9,453,100,000 9,060,500,000 8,518,200,000 9,446,400,000 9,499,500,000 9,448,600,000 9,316,600,000 9,107,400,000 9,361,200,000 9,157,000,000 8,920,300,000 8,581,100,000 8,687,900,000 9,244,000,000 9,243,700,000 8,955,700,000 8,669,900,000 8,380,600,000 8,557,800,000 8,673,300,000 8,179,900,000                             
        total liabilities and stockholders' equity
      62,714,300,000 63,678,100,000 62,843,800,000 62,459,800,000 61,959,300,000 64,140,500,000 62,044,400,000 62,487,800,000 63,255,200,000 59,954,500,000 61,904,400,000 62,423,800,000 61,434,900,000 60,866,700,000 63,121,100,000 66,471,700,000 70,115,600,000 70,597,900,000 70,807,900,000 69,256,600,000 70,625,800,000 69,616,000,000 69,305,200,000 65,335,900,000 67,013,400,000 66,955,700,000 65,843,700,000 63,921,700,000 62,249,800,000 62,366,600,000 63,012,300,000 63,805,700,000 63,381,600,000 62,524,700,000 63,905,100,000 63,853,100,000 61,967,900,000 61,503,800,000 63,014,500,000 61,960,600,000 62,218,100,000 61,078,600,000 59,585,800,000 59,366,200,000 61,611,400,000 62,119,600,000 59,571,800,000                             
        short-term debt
       274,900,000 274,800,000 274,600,000 274,600,000     2,000,000 2,000,000 2,000,000 2,000,000          399,900,000 399,800,000 399,700,000 399,700,000    200,000,000 200,000,000 199,900,000    350,700,000 351,400,000 506,100,000 151,900,000 70,200,000 57,400,000 61,600,000 140,500,000 153,600,000 236,300,000 458,300,000 372,200,000  225,100,000 225,100,000  45,000,000 206,900,000 275,000,000 240,000,000 175,000,000 175,000,000 175,000,000      200,000,000 202,000,000 227,000,000   20,000,000 20,000,000 207,200,000 255,000,000 35,000,000 35,000,000 162,400,000 
        issued: 196,158,797 and 195,460,723 shares
       19,600,000                                                                          
        issued: 196,106,652 and 195,460,723 shares
        19,600,000                                                                         
        issued: 195,954,270 and 195,460,723 shares
         19,500,000                                                                        
        commitments and contingent liabilities - note 16
                                                                                 
        issued: 195,460,723 and 194,588,625 shares
          19,500,000                                                                       
        issued: 195,419,352 and 194,588,625 shares
           19,500,000                                                                      
        issued: 195,319,864 and 194,588,625 shares
            19,500,000                                                                     
        issued: 195,208,726 and 194,588,625 shares
             19,500,000                                                                    
        issued: 194,588,625 and 308,306,490 shares
              19,400,000                                                                   
        issued: 309,486,850 and 308,306,490 shares
               30,900,000                                                                  
        issued: 309,390,815 and 308,306,490 shares
                30,900,000                                                                 
        commitments and contingent liabilities - note 12
                                                                                 
        issued: 309,222,758 and 308,306,490 shares
                 30,900,000                                                                
        policy and contract benefits
                  1,839,800,000 1,771,400,000 1,815,900,000 1,874,200,000 1,907,700,000 1,920,400,000 1,890,400,000 1,899,300,000 1,855,400,000 1,801,600,000 1,778,800,000 1,760,300,000 1,745,500,000 1,720,500,000 1,751,400,000 1,708,600,000 1,674,100,000 1,625,400,000 1,623,100,000 1,539,000,000 1,552,500,000 1,544,800,000 1,483,500,000 1,486,400,000 1,462,200,000 1,505,600,000 1,533,100,000 1,527,700,000 1,564,000,000 1,569,200,000 1,515,100,000 1,519,900,000 1,509,300,000 1,442,800,000 1,470,500,000 1,528,700,000 1,578,600,000 1,584,300,000 1,722,000,000 1,724,500,000 1,705,600,000 1,832,700,000 1,940,000,000 1,940,200,000 1,990,400,000 2,070,100,000 2,083,300,000 2,193,700,000 2,043,800,000 2,093,700,000 1,722,500,000 2,033,700,000 1,994,500,000 2,044,900,000 2,122,900,000 2,059,100,000 1,960,200,000 1,943,800,000 1,974,100,000 1,962,000,000 1,945,800,000 1,931,900,000 1,888,200,000 
        reserves for future policy and contract benefits
                  42,330,200,000 42,108,700,000 43,088,000,000 45,258,000,000 48,007,500,000 48,475,700,000 48,952,000,000 48,112,300,000 49,653,000,000 48,844,300,000 48,335,100,000 45,706,500,000 47,780,100,000 48,060,800,000 47,138,300,000 46,109,400,000 45,092,700,000 43,959,400,000 44,668,500,000 45,456,900,000 45,136,100,000 44,502,200,000 45,745,100,000 45,463,400,000 44,446,600,000 44,544,900,000 46,199,500,000 44,478,600,000 44,673,700,000 43,932,500,000 42,836,800,000 42,998,800,000 44,364,500,000 44,537,700,000 42,965,500,000 39,685,200,000 41,248,200,000 38,054,100,000 37,840,800,000 35,895,000,000 34,520,600,000 34,941,500,000 35,650,400,000 35,793,000,000 36,289,200,000 36,105,300,000 36,040,300,000 35,109,500,000 34,282,700,000 34,333,800,000 34,125,200,000         28,632,000,000    
        commitments and contingent liabilities - note 14
                                                                                 
        issued: 308,306,490 and 307,334,853 shares
                  30,800,000                                                               
        accumulated other comprehensive income
                  -2,756,600,000 -3,134,700,000 -1,772,200,000 -580,100,000 354,100,000 113,900,000 222,100,000 -24,900,000 374,200,000 477,600,000 327,200,000 -217,100,000 37,300,000    -868,500,000 -276,200,000 -82,400,000 124,300,000 104,900,000 400,000 450,700,000 339,800,000 200,700,000 22,000,000 260,400,000 548,600,000 631,900,000 454,400,000 409,600,000 216,700,000 485,700,000                  1,167,000,000 1,820,500,000 1,173,300,000 1,272,500,000 746,600,000 1,615,500,000 1,384,700,000 1,342,600,000 760,500,000  636,000,000 177,900,000 -207,700,000 
        commitments and contingent liabilities - note 11
                                                                                 
        issued: 308,189,371 and 307,334,853 shares
                   30,800,000                                                              
        issued: 308,132,633 and 307,334,853 shares
                    30,800,000                                                             
        issued: 308,030,461 and 307,334,853 shares
                     30,800,000                                                            
        income tax receivable
                         43,300,000 72,700,000        19,000,000 2,800,000             31,100,000 8,600,000                                
        issued: 307,334,853 and 306,566,572 shares
                      30,700,000                                                           
        issued: 307,282,297 and 306,566,572 shares
                       30,700,000                                                          
        issued: 307,226,327 and 306,566,572 shares
                        30,700,000                                                         
        issued: 307,065,068 and 306,566,572 shares
                         30,700,000                                                        
        issued: 306,566,572 and 305,813,326 shares
                          30,700,000                                                       
        payables for collateral on investments
                           64,500,000 211,000,000 511,400,000     238,200,000 307,700,000 382,200,000 398,300,000 404,800,000 397,600,000 440,100,000 450,200,000 425,900,000 410,400,000                                      
        issued: 306,465,302 and 305,813,326 shares
                           30,700,000                                                      
        issued: 306,361,248 and 305,813,326 shares
                            30,600,000                                                     
        issued: 306,201,660 and 305,813,326 shares
                             30,600,000                                                    
        issued: 305,813,326 and 305,104,548 shares
                              30,600,000                                                   
        issued: 305,751,664 and 305,104,548 shares
                               30,600,000                                                  
        issued: 305,715,150 and 305,104,548 shares
                                30,600,000                                                 
        issued: 305,565,569 and 305,104,548 shares
                                 30,500,000                                                
        issued: 305,069,982 and 304,448,032 shares
                                  30,500,000                                               
        issued: 305,029,229 and 304,448,032 shares
                                   30,500,000                                              
        issued: 304,951,984 and 304,448,032 shares
                                    30,500,000                                             
        issued: 304,416,454 and 303,552,934 shares
                                     30,400,000                                            
        issued: 304,082,323 and 303,552,934 shares
                                      30,400,000                                           
        issued: 303,993,726 and 303,552,934 shares
                                       30,400,000                                          
        commitments and contingent liabilities - note 10
                                                                                 
        issued: 303,330,937 and 302,702,811 shares
                                        30,300,000                                         
        issued: 303,299,730 and 302,702,811 shares
                                         30,300,000                                        
        issued: 303,176,096 and 302,702,811 shares
                                          30,300,000                                       
        issued: 302,386,463 and 301,834,556 shares
                                           30,200,000                                      
        issued: 302,215,794 and 301,834,556 shares
                                            30,200,000                                     
        issued: 361,456,139 and 360,802,426 shares
                                             36,100,000                                    
        issued: 361,384,142 and 360,802,426 shares
                                              36,100,000                                   
        issued: 361,265,467 and 360,802,426 shares
                                               36,100,000                                  
        issued: 360,453,150 and 359,751,943 shares
                                                36,000,000                                 
        issued: 360,371,253 and 359,751,943 shares
                                                 36,000,000                                
        issued: 360,260,522 and 359,751,943 shares
                                                  36,000,000                               
        other policyholders' funds
                                                   1,629,400,000 1,638,400,000                             
        commitments and contingent liabilities - note 9
                                                                                 
        issued: 359,705,527 and 358,691,567 shares
                                                   36,000,000                              
        net unrealized gain on securities not other-than-temporarily impaired
                                                   892,200,000 584,400,000 443,600,000 484,800,000 496,200,000 387,000,000                         
        net gain on cash flow hedges
                                                   400,300,000 398,000,000 351,100,000 413,000,000 356,800,000 359,100,000 367,500,000 447,800,000 254,500,000 177,700,000 215,500,000 137,000,000 135,400,000 180,500,000 181,100,000 126,200,000 203,600,000          83,900,000    
        foreign currency translation adjustment
                                                   -78,600,000 -89,400,000 -84,100,000 -103,400,000 -141,000,000 -90,500,000 -60,700,000 -195,800,000 4,400,000 122,900,000 122,500,000 156,800,000 136,900,000 121,700,000 47,400,000 37,700,000 22,900,000              
        unrecognized pension and postretirement benefit costs
                                                   -423,600,000 -437,600,000 -313,500,000 -303,700,000 -312,100,000 -389,400,000 -397,000,000 -399,000,000 -189,500,000 -194,900,000 -196,600,000 -241,800,000 -246,600,000 -248,800,000                 
        issued: 359,304,646 and 358,691,567 shares
                                                    35,900,000                             
        liabilities and stockholders’ equity
                                                                                 
        stockholders’ equity
                                                                                 
        issued: 358,135,704 and 364,842,919 shares
                                                     35,800,000                            
        net unrealized gain on securities other-than-temporarily impaired
                                                      3,100,000 3,000,000                          
        total stockholders’ equity
                                                     8,983,800,000 8,924,100,000 8,780,200,000 8,243,000,000 7,478,400,000 6,422,600,000 6,735,900,000 7,664,300,000 7,638,400,000 7,830,800,000 7,371,600,000 7,376,600,000 7,594,400,000 6,986,900,000 6,568,000,000 7,237,700,000 7,854,600,000 7,052,400,000 6,900,400,000 6,226,400,000 7,134,300,000 7,850,300,000 7,719,500,000 6,545,300,000 6,843,200,000 6,670,200,000 6,136,000,000 5,735,900,000 
        total liabilities and stockholders’ equity
                                                     57,116,800,000 59,054,700,000 54,997,200,000 54,475,200,000 51,339,800,000 49,179,500,000 49,937,800,000 51,767,800,000 52,069,200,000 52,566,600,000 52,071,200,000 52,324,800,000 52,171,500,000 50,401,900,000 50,471,300,000 51,146,900,000 52,430,400,000 50,836,600,000 49,774,100,000 48,503,700,000 50,476,900,000 49,338,300,000 49,364,100,000 46,324,100,000 45,259,500,000 44,491,100,000 43,356,000,000 42,381,100,000 
        issued: 364,787,512 and 363,638,314 shares
                                                      36,500,000                           
        issued: 364,604,519 and 363,638,314 shares
                                                       36,500,000                          
        separate account assets
                                                        11,000,000 9,600,000 8,900,000 14,400,000 17,400,000 18,700,000 22,300,000 21,900,000 20,900,000 28,000,000 27,600,000 29,700,000 30,700,000 29,800,000 30,100,000 29,900,000 32,000,000 32,300,000 30,200,000 29,900,000 26,600,000 27,900,000 26,800,000 34,500,000 41,600,000 
        separate account liabilities
                                                        11,000,000 9,600,000 8,900,000 14,400,000 17,400,000 18,700,000 22,300,000 21,900,000 20,900,000 28,000,000 27,600,000 29,700,000 30,700,000 29,800,000 30,100,000 29,900,000 32,000,000 32,300,000 30,200,000 29,900,000 26,600,000 27,900,000 26,800,000 34,500,000 41,600,000 
        issued: 363,460,886 and 362,949,412 shares
                                                        36,300,000                         
        net unrealized loss on securities other-than-temporarily impaired
                                                        -1,300,000 -15,500,000                        
        issued: 363,157,176 and 362,949,412 shares
                                                         36,300,000                        
        net unrealized loss on securities not other-than-temporarily impaired
                                                         -186,200,000                        
        commitments and contingent liabilities - note 8
                                                                                 
        issued: 363,036,594 and 362,949,412 shares
                                                          36,300,000                       
        net unrealized loss on securities
                                                          -933,000,000                       
        real estate
                                                           13,800,000 13,100,000 18,700,000 20,200,000 20,200,000 17,900,000 18,000,000 18,000,000 18,000,000 18,200,000 18,200,000 26,200,000 26,100,000 26,300,000 26,000,000 26,700,000 37,900,000 39,000,000 37,100,000 37,200,000 37,500,000 38,000,000 
        issued: 362,907,145 and 362,844,570 shares
                                                           36,300,000                      
        net unrealized gain on securities
                                                           -665,000,000 -32,700,000 128,300,000 346,600,000 78,000,000 490,300,000 687,900,000 60,700,000 256,200,000          900,100,000    
        issued: 362,801,184 and 362,844,570 shares
                                                            36,300,000                     
        issued: 362,726,764 and 362,844,570 shares
                                                             36,300,000                    
        other assets - discontinued operations
                                                                         328,300,000        
        other liabilities - discontinued operations
                                                                         1,472,900,000        
        issued: 362,781,592 and 344,578,616 shares
                                                              36,300,000                   
        issued: 362,748,249 and 344,578,616 shares
                                                               36,300,000                  
        issued: 344,754,055 and 344,578,616 shares
                                                                34,500,000                 
        reinsurance receivable
                                                                 5,573,300,000 5,584,100,000 5,618,200,000 5,511,400,000 7,276,200,000 7,256,900,000 6,833,700,000 6,827,000,000 6,243,700,000 6,094,000,000 6,055,900,000 5,994,900,000 5,986,000,000 6,006,600,000 6,176,500,000 6,217,000,000 
        deferred policy acquisition costs
                                                                 2,965,000,000 2,951,400,000 2,930,600,000 2,913,600,000 2,917,300,000 2,901,900,000 2,862,300,000 2,833,300,000 2,798,800,000 3,189,100,000 3,137,400,000 3,054,700,000 2,981,600,000 2,893,700,000 2,828,700,000 2,735,300,000 
        value of business acquired
                                                                 77,600,000 78,800,000 77,100,000 83,200,000 88,100,000 96,000,000 103,900,000 108,800,000 110,400,000 518,800,000 529,300,000 533,200,000 504,300,000 512,800,000 525,000,000 531,200,000 
        current income tax
                                                                 18,400,000 18,500,000 20,200,000 2,300,000 26,600,000 11,800,000 50,900,000 48,000,000 35,900,000  55,800,000 48,400,000     
        minimum pension liability adjustment
                                                                 -172,900,000 -172,900,000 -172,900,000              
        deferred compensation
                                                                    -17,700,000 -21,500,000 -25,300,000 -8,000,000 -9,300,000 -10,700,000 -13,500,000 -15,100,000 -2,400,000  -2,800,000 -3,000,000 -3,300,000 
        issued: 344,469,445 and 300,508,859 shares
                                                                  34,400,000               
        issued: 301,368,746 and 300,508,859 shares
                                                                   30,100,000              
        equity securities
                                                                    12,900,000 12,800,000 12,300,000 13,100,000 21,500,000 43,800,000 32,600,000 73,500,000 37,900,000  7,000,000 8,100,000 5,500,000 
        issued: 299,970,342 and 298,497,008 shares
                                                                    30,000,000             
        reserves for future policy and contract benefits and unearned premiums
                                                                     34,367,900,000 33,986,500,000 32,903,700,000 32,067,000,000 32,228,800,000 31,401,000,000 31,553,500,000 30,457,900,000   28,234,400,000 27,882,200,000 
        available-for-sale - continuing operations
                                                                       31,320,500,000 29,829,400,000 31,565,900,000        
        available-for-sale - discontinued operations
                                                                         1,125,500,000        
        total fixed maturity securities
                                                                       31,320,500,000 29,829,400,000 32,691,400,000        
        commitments and contingencies - note 9
                                                                                 
        fixed maturity securities
                                                                          30,405,300,000 30,070,800,000 27,619,100,000  26,404,200,000 24,944,300,000 24,244,700,000 
        other investments
                                                                          39,300,000 63,500,000 38,200,000  36,400,000 34,700,000 34,300,000 
        commitments and contingent liabilities – note 8
                                                                                 
        company-obligated mandatorily redeemable preferred securities of subsidiary trust holding solely junior subordinated debt securities of the company
                                                                          300,000,000 300,000,000 300,000,000 300,000,000 300,000,000 300,000,000 300,000,000 
        issued: 298,013,032 and 243,538,355 shares
                                                                          29,800,000       
        commitments and contingent liabilities—note 8
                                                                                 
        issued: 243,595,107 and 243,538,355 shares
                                                                            24,400,000     
        fixed maturity securities available-for-sale - at fair value
                                                                             27,486,300,000    
        equity securities - at fair value
                                                                             27,900,000    
        current federal income tax
                                                                             44,700,000    
        miscellaneous
                                                                             1,033,600,000    
        deferred federal income tax
                                                                             1,036,400,000    
        stockholders’ equity - note 10
                                                                                 
        issued: 243,538,355 and 242,394,996 shares
                                                                             24,400,000    
        reserves for future policy and contract benefits and
                                                                                 
        federal income tax
                                                                              933,500,000 642,900,000 413,600,000 
        commitments and contingent liabilities – note 6
                                                                                 
        issued: 243,455,097 and 242,394,996 shares
                                                                              24,300,000   
        commitments and contingent liabilities—note 6
                                                                                 
        issued: 243,101,414 and 242,394,996 shares
                                                                                24,300,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 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 2018-09-30 2018-06-30 2018-03-31 2017-09-30 2017-06-30 2017-03-31 2016-09-30 2016-06-30 2016-03-31 2015-03-31 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-03-31 2011-03-31 2010-03-31 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 2007-09-30 2007-06-30 2007-03-31 2006-09-30 2006-06-30 2006-03-31 2005-09-30 2005-06-30 2005-03-31 2004-09-30 2004-06-30 2004-03-31 2003-09-30 2003-06-30 2003-03-31 2002-12-31 2002-09-30 2002-06-30 2002-03-31 
                                                                              
          cash flows from operating activities
                                                                              
          net income
        232,000,000 39,700,000 335,600,000 189,100,000 348,700,000 645,700,000 389,500,000 395,200,000 330,600,000 202,000,000 392,900,000 358,300,000 279,600,000 410,700,000 370,400,000 253,500,000 159,700,000 328,600,000 182,900,000 153,000,000 135,400,000 231,100,000 265,500,000 161,000,000 296,200,000 242,000,000 281,200,000 280,900,000 -284,700,000 285,500,000 273,500,000 252,300,000 245,100,000 229,900,000 236,000,000 236,800,000 210,600,000 212,900,000 228,900,000 205,700,000 218,600,000 212,600,000 213,900,000 225,400,000 229,800,000 221,100,000 267,200,000 164,900,000 108,000,000 240,300,000 163,100,000 187,000,000 153,500,000 178,300,000 -63,700,000 125,200,000 73,400,000 52,600,000 171,300,000 152,200,000 167,600,000 7,200,000 -562,300,000 108,700,000 98,500,000 -246,400,000 292,000,000 12,400,000   
          adjustments to reconcile net income to net cash from operating activities
                                                                              
          change in receivables
        -33,800,000 161,000,000 157,800,000 202,400,000 57,500,000 301,900,000 161,000,000 103,500,000 146,800,000 170,300,000 195,700,000 89,900,000 128,200,000 -31,500,000 230,100,000 239,200,000 250,800,000 145,700,000 277,000,000 4,500,000 79,700,000 71,300,000 100,600,000 -8,700,000 30,400,000 -50,100,000 67,900,000 -10,700,000 -142,900,000 81,700,000 -29,400,000 -213,800,000 113,000,000 -18,200,000 -113,800,000 75,400,000 -27,300,000 49,200,000 14,000,000 -130,700,000 35,100,000 -130,100,000 1,600,000 33,800,000 19,100,000 12,400,000 7,300,000 58,300,000 -33,700,000 28,800,000 -3,900,000 179,600,000 -48,000,000 -600,000 42,800,000 -34,500,000 -5,300,000              
          change in deferred acquisition costs
        -56,400,000 -41,200,000 -42,700,000 -47,200,000 -23,100,000 -29,500,000 -37,200,000 -40,700,000 -42,000,000 -24,200,000 -42,800,000 -41,800,000 3,700,000 11,400,000 4,700,000 14,300,000 26,100,000 9,800,000 6,300,000 35,800,000 10,100,000 14,800,000 -9,200,000 14,200,000 -12,600,000 -14,300,000 -18,700,000 -3,100,000 -29,900,000 -25,500,000 -17,800,000 -31,100,000 -14,900,000 -20,600,000 -29,000,000 -20,500,000 -20,300,000 -10,700,000 -10,400,000 -19,200,000 -12,000,000 5,600,000 -18,000,000 -20,000,000 -13,700,000 -13,100,000 -15,900,000 -21,800,000 -16,100,000 -26,300,000 -15,600,000 -18,000,000 -14,000,000 -21,500,000                 
          change in insurance liabilities
        143,500,000 429,500,000 114,600,000 -59,600,000 -149,900,000 -507,700,000 -11,000,000 -112,300,000 -143,900,000 24,900,000 -74,600,000 -119,600,000                                                           
          change in income taxes
        71,200,000 8,700,000 -43,000,000 53,300,000 75,700,000 56,300,000 -141,600,000 107,200,000 -57,400,000 -37,500,000 -65,600,000 76,200,000 -37,200,000 -46,500,000 -33,400,000 58,300,000 90,300,000 19,800,000 140,300,000 44,900,000 -193,300,000 79,700,000 57,400,000 24,900,000 32,900,000 -21,400,000 -16,400,000 253,100,000 -101,400,000 -61,900,000 56,400,000 25,700,000 -36,800,000 92,500,000 -45,300,000 -38,500,000 83,000,000 161,400,000 136,500,000 -17,000,000 -105,000,000 40,100,000 116,700,000 83,000,000 173,600,000 6,500,000                         
          change in other accrued liabilities
        -69,300,000 123,200,000 -62,800,000 -203,500,000 26,000,000 59,700,000 26,800,000 -144,800,000 75,400,000 41,000,000 -16,100,000 -175,100,000 21,100,000 -48,300,000 40,400,000 -127,100,000 75,500,000 600,000 7,600,000 -72,400,000 161,600,000 50,900,000 68,900,000 -121,300,000 81,200,000 -44,900,000 50,800,000 -35,800,000 59,900,000 75,500,000 -110,400,000 6,000,000 5,700,000 -18,300,000 -6,800,000 -30,800,000 -69,000,000 -62,600,000 18,500,000 -29,400,000 23,400,000 -68,000,000 -32,100,000 -149,600,000 32,200,000 -900,000 -103,100,000 21,300,000 13,800,000 -116,800,000 -38,100,000 -67,500,000 -47,600,000 -30,600,000 25,000,000 -75,300,000              
          non-cash components of net investment income
        -36,100,000 -122,900,000 -158,500,000 -18,300,000 79,000,000 -133,000,000 -118,300,000 -76,600,000 22,600,000 -54,100,000 -144,400,000 -64,400,000 46,000,000 -52,700,000 -129,000,000 -111,300,000 -78,900,000 70,900,000 -138,700,000 -108,000,000 -9,200,000 51,700,000 -70,500,000 -92,500,000 -59,000,000 52,500,000 -135,800,000 -95,600,000 64,600,000 -90,300,000 -95,200,000 67,700,000 -109,700,000 -103,700,000 55,500,000 -103,600,000 -86,900,000 -90,500,000                                 
          net investment loss
        5,000,000 -128,000,000 17,700,000 206,800,000 10,100,000   1,200,000 6,000,000 31,000,000 -900,000 -100,000  4,400,000 4,100,000 13,800,000                                                       
          depreciation
        31,800,000 31,600,000 30,200,000 30,000,000 26,200,000 30,600,000 29,200,000 30,100,000 27,900,000 28,100,000 26,000,000 26,800,000 27,000,000 26,800,000 26,700,000 30,000,000 29,800,000 30,400,000 30,300,000 29,300,000 28,000,000 29,800,000 27,300,000 28,500,000 27,500,000 27,700,000 27,500,000 27,400,000 25,400,000 24,900,000 24,600,000 25,000,000 26,900,000 26,500,000 25,300,000 25,200,000 25,400,000 23,500,000 20,800,000 20,700,000 21,500,000 21,200,000 20,500,000 19,300,000 18,200,000 18,900,000 18,500,000 17,600,000 16,100,000 18,300,000 16,200,000 16,200,000 15,500,000 16,900,000 18,500,000 15,200,000 18,800,000              
          amortization of the cost of reinsurance
        45,700,000 48,600,000 9,700,000 9,600,000 10,300,000 10,400,000 10,300,000 10,400,000 11,000,000 11,100,000 11,000,000 11,000,000 15,300,000 15,200,000 16,600,000 16,700,000 19,700,000 19,700,000                                                     
          other
        7,200,000 36,100,000 -10,600,000 -9,000,000 25,300,000 -57,300,000 20,000,000 25,100,000 -33,500,000 2,500,000 32,400,000 -10,600,000 36,300,000 800,000 2,300,000 -23,300,000 -44,000,000 -16,000,000 74,600,000 1,200,000 15,100,000 16,100,000 50,000,000 2,300,000 23,900,000 37,400,000 9,200,000 11,000,000 -7,300,000 -3,700,000 12,200,000 -2,000,000 -2,600,000 2,200,000 12,700,000 7,400,000 6,100,000 9,600,000 1,900,000 4,500,000 -500,000 1,100,000 8,600,000 6,800,000 900,000 1,100,000 6,700,000 11,500,000 -3,200,000 7,300,000 4,000,000 26,200,000 -3,600,000 7,400,000 -3,300,000 27,500,000 10,100,000 -1,300,000 -125,300,000 -204,700,000 125,300,000 -429,700,000 -218,600,000 -163,400,000 -63,100,000 -284,500,000  76,800,000 -2,900,000 -8,100,000 
          net cash from operating activities
        340,800,000 -371,800,000 348,000,000 353,600,000 485,800,000 390,000,000 339,100,000 298,300,000 343,500,000 395,100,000 313,600,000 150,600,000 356,900,000 277,200,000   388,200,000 455,100,000   -681,300,000 426,400,000 632,500,000 219,900,000 484,800,000 314,100,000 425,900,000 516,800,000 387,300,000 396,300,000 299,900,000 224,000,000 334,000,000 308,000,000 193,500,000 268,100,000 293,300,000 400,100,000 346,700,000 261,200,000 183,200,000 265,100,000 329,300,000 301,000,000 281,600,000 245,500,000 317,200,000 290,900,000 320,300,000 426,900,000 274,400,000 638,600,000 336,500,000 280,200,000 191,800,000 395,700,000 263,700,000 316,900,000 342,400,000 287,200,000 -116,400,000   405,900,000   602,800,000 365,400,000 611,200,000 207,300,000 
          capital expenditures
        -39,600,000 -30,800,000 -27,900,000 -35,800,000 -32,000,000 -37,700,000 -27,700,000 -28,300,000 -45,700,000 -32,800,000 -27,200,000 -29,100,000 -31,400,000 -26,400,000   -27,900,000 -24,800,000   -19,600,000 -22,000,000 -38,400,000 -39,100,000 -43,400,000 -42,600,000 -36,800,000 -28,100,000 -36,000,000 -30,500,000 -29,100,000 -16,900,000 -20,500,000 -27,300,000 -18,500,000 -24,400,000 -17,200,000 -31,400,000     
          free cash flows
        301,200,000 -402,600,000 320,100,000 317,800,000 453,800,000 352,300,000 311,400,000 270,000,000 297,800,000 362,300,000 286,400,000 121,500,000 325,500,000 250,800,000   360,300,000 430,300,000   -700,900,000 404,400,000 594,100,000 180,800,000 441,400,000 271,500,000 389,100,000 488,700,000 351,300,000 365,800,000 270,800,000 207,100,000 313,500,000 280,700,000 175,000,000 243,700,000 276,100,000 368,700,000 346,700,000 261,200,000 183,200,000 265,100,000 329,300,000 301,000,000 281,600,000 245,500,000 317,200,000 290,900,000 320,300,000 426,900,000 274,400,000 638,600,000 336,500,000 280,200,000 191,800,000 395,700,000 263,700,000 316,900,000 342,400,000 287,200,000 -116,400,000   405,900,000   602,800,000 365,400,000 611,200,000 207,300,000 
          cash flows from investing activities
                                                                              
          proceeds from sales of fixed maturity securities
        45,700,000 202,200,000 215,500,000 255,400,000 520,800,000 107,400,000 59,000,000 190,100,000 49,200,000 711,000,000 247,400,000 55,100,000 106,100,000 96,500,000 185,000,000 171,900,000 120,200,000 54,200,000 110,700,000 157,400,000 491,100,000 136,200,000 242,800,000 120,700,000 92,700,000 255,600,000 245,900,000 361,000,000 169,000,000 202,400,000 84,800,000 31,000,000 117,900,000 154,300,000 51,900,000 309,900,000 364,800,000 108,500,000 193,400,000 588,200,000 130,400,000 158,400,000 127,600,000                            
          proceeds from maturities of fixed maturity securities
        648,000,000 583,400,000 456,300,000 467,000,000 485,800,000 379,200,000 221,300,000 396,700,000 464,200,000 245,100,000 481,400,000 387,400,000 406,900,000 339,800,000 358,700,000 427,100,000 634,800,000 583,100,000 537,200,000 856,300,000 458,200,000 702,500,000 477,400,000 414,300,000 1,008,700,000 581,200,000 441,500,000 369,600,000 711,300,000 1,053,800,000 469,800,000 560,100,000 720,100,000 568,300,000 586,900,000 568,500,000 348,700,000 468,000,000 510,000,000 659,800,000 454,200,000 518,500,000 596,300,000                            
          proceeds from sales and maturities of other investments
        140,600,000 128,400,000 115,100,000 131,800,000 97,300,000 74,100,000 112,200,000 48,500,000 84,800,000 112,400,000 71,200,000 91,600,000 139,500,000 87,800,000 116,600,000 102,000,000 129,300,000 94,400,000 111,200,000 68,200,000 73,100,000 49,800,000 65,600,000 48,500,000 91,500,000 84,900,000 53,800,000 133,300,000 93,200,000 175,100,000 82,300,000 65,500,000 58,100,000 48,700,000 91,000,000 88,200,000 78,500,000 42,500,000 57,400,000 53,800,000 70,400,000 42,300,000 33,500,000 35,500,000 36,500,000 71,700,000 97,400,000 45,800,000 29,800,000 25,800,000 99,600,000 46,000,000 169,200,000 54,100,000 44,100,000                
          purchases of fixed maturity securities
        -1,543,000,000 -842,900,000 -487,500,000 -416,800,000  -527,700,000 -448,200,000 -575,000,000  -1,263,400,000 -586,900,000 -589,100,000  -652,500,000 -796,100,000 -931,900,000  -1,001,300,000 -937,200,000 -1,185,000,000  -1,161,200,000 -287,800,000 -780,500,000  -960,800,000 -1,084,100,000 -822,000,000 -908,700,000 -1,095,900,000 -835,400,000 -678,800,000 -609,900,000 -774,700,000 -711,200,000 -858,400,000 -882,700,000                                  
          purchases of other investments
        -88,700,000 -79,300,000 -103,800,000 -98,800,000  -69,200,000 -89,800,000 -59,600,000  -69,000,000 -78,200,000 -79,900,000  -93,800,000 -120,300,000 -128,600,000  -221,400,000 -105,400,000 -62,500,000  -39,400,000 -106,000,000 -144,200,000  -201,900,000 -99,800,000 -53,200,000 -139,600,000 -218,900,000 -90,000,000 -133,600,000 -84,200,000 -95,700,000 -172,400,000 -175,000,000 -84,000,000                                  
          net sales and maturities (purchases) of short-term investments
        979,100,000 -294,600,000 719,500,000 -391,400,000                                                                   
          net increase in payables for collateral on investments
        -59,400,000 144,300,000 85,600,000 76,500,000 62,300,000 115,600,000 54,300,000 19,600,000  -44,400,000   -63,300,000 -6,800,000 20,600,000 -1,300,000 -100,700,000 -22,800,000 56,700,000 16,100,000 274,000,000 -146,500,000 -300,400,000 487,400,000        -6,500,000 7,200,000 -8,400,000 -10,100,000 24,300,000 10,500,000 6,100,000                                 
          net purchases of property and equipment
        -39,600,000 -30,800,000 -27,900,000 -35,800,000 -32,000,000 -37,700,000 -27,700,000 -28,300,000 -45,700,000 -32,800,000 -27,200,000 -29,100,000 -31,400,000 -26,400,000 -22,600,000 -21,800,000 -27,900,000 -24,800,000 -26,700,000 -30,900,000 -19,600,000 -22,000,000 -38,400,000 -39,100,000 -43,400,000 -42,600,000 -36,800,000 -28,100,000 -36,000,000 -30,500,000 -29,100,000 -16,900,000 -20,500,000 -27,300,000 -18,500,000 -24,400,000 -17,200,000 -31,400,000                                 
          net cash provided (used) by investing activities
        82,700,000 -189,300,000 972,800,000 -12,100,000    17,700,000        -192,400,000        122,600,000    -365,200,000   119,300,000        -540,600,000 -104,000,000 -9,300,000 184,100,000  188,000,000    -277,500,000   11,800,000   -77,200,000   154,100,000      -239,800,000   151,400,000     
          cash flows from financing activities
                                                                              
          long-term debt repayment
        -7,200,000                 -35,000,000 -15,000,000 -15,000,000 -15,000,000                                               
          issuance of common stock
        1,600,000   1,400,000    1,300,000 1,100,000 1,400,000 1,500,000 1,200,000 1,300,000 1,000,000 1,100,000 600,000 1,100,000 900,000 600,000 800,000 1,100,000 1,000,000 1,000,000 1,300,000 1,400,000 1,200,000 2,100,000 1,400,000 1,000,000 1,300,000 1,300,000 8,000,000 500,000 1,000,000 900,000 1,000,000 1,700,000 800,000 1,600,000 1,000,000 2,600,000 700,000 900,000 5,500,000 7,000,000 4,600,000 1,000,000 700,000 1,400,000 1,300,000 900,000 500,000 304,500,000 2,400,000 1,600,000      400,000   400,000       
          repurchase of common stock
        -398,800,000   -200,500,000    -121,900,000 -75,900,000 -75,600,000 -47,400,000 -51,200,000 -64,000,000 -42,700,000 -43,400,000 -50,000,000         -103,100,000 -97,000,000 -100,200,000 -100,000,000 -100,100,000 -105,700,000 -100,200,000 -100,100,000 -106,900,000 -100,200,000 -100,100,000 -108,800,000 -108,100,000 -100,500,000 -75,000,000 -98,400,000 -99,000,000 -175,200,000 -215,700,000                           
          dividends paid to stockholders
        -78,200,000 -78,400,000 -73,400,000 -77,100,000 -77,200,000 -77,800,000 -69,000,000 -72,500,000 -71,400,000 -71,400,000 -65,100,000 -69,200,000 -65,800,000 -66,100,000 -60,300,000 -62,000,000 -61,400,000 -61,300,000 -58,300,000 -58,400,000 -58,100,000 -58,000,000 -58,000,000 -57,800,000 -58,900,000 -59,400,000 -55,200,000 -55,700,000 -56,900,000 -50,900,000 -52,400,000 -51,800,000 -45,800,000 -46,500,000 -46,800,000 -44,200,000 -45,200,000 -42,300,000 -38,300,000 -38,400,000 -34,700,000 -35,700,000 -31,400,000 -29,900,000 -27,700,000 -27,200,000 -24,900,000 -25,000,000 -26,100,000 -25,900,000 -26,700,000 -27,000,000 -25,600,000 -25,600,000 -25,600,000 -22,300,000 -22,200,000 -22,200,000 -22,100,000 -22,200,000 -22,000,000 -22,200,000 -22,100,000 -22,100,000 -18,100,000 -35,600,000  -35,700,000 -35,800,000 -35,800,000 
          proceeds from policyholders' account deposits
        153,800,000 30,300,000 31,000,000 32,300,000 32,300,000 33,100,000 33,300,000 34,500,000 34,100,000 35,300,000 36,300,000 37,700,000                                                           
          payments for policyholders' account withdrawals
        -43,000,000 -25,600,000 -20,500,000 -22,700,000 -17,200,000 -21,000,000 -20,600,000 -23,900,000 -21,800,000 -20,100,000 -20,700,000 -24,400,000                                                           
          net cash used by financing activities
        -389,100,000 -305,800,000 -363,700,000 -266,600,000 -535,100,000 -239,600,000 -194,400,000 -182,900,000 -136,100,000 -112,100,000 -95,700,000 -106,200,000 -116,300,000 -108,400,000 -92,100,000 -101,800,000 -100,000   -61,800,000 -47,900,000   -89,400,000 -290,100,000   -183,500,000 -286,800,000 115,200,000 -187,700,000   -177,000,000   -175,000,000   -142,000,000 -228,100,000 -424,500,000 -161,600,000 -486,000,000 -51,600,000  -189,900,000 -13,100,000   -400,500,000   -188,900,000 -26,400,000 231,400,000 -426,300,000   -51,900,000   -26,400,000   -90,200,000     
          net increase in cash and bank deposits
        34,400,000 -866,900,000 957,100,000 74,900,000 -600,000   133,100,000 -19,900,000 57,600,000 -14,800,000 3,900,000 -24,100,000 -8,100,000 44,800,000 31,600,000 -46,700,000 -1,400,000 -438,700,000 364,800,000 93,200,000 -61,800,000 -171,600,000 253,100,000 7,100,000 16,200,000 -1,300,000 -31,900,000 114,700,000 -209,400,000 231,500,000  10,000,000 6,600,000 -5,900,000 -26,900,000 7,800,000  -17,900,000   24,700,000 -14,100,000 3,000,000 -19,900,000   200,000 5,200,000 9,300,000 -114,300,000 17,800,000 -8,700,000 14,200,000      -70,200,000   12,100,000   -5,000,000    15,400,000 
          cash and bank deposits at beginning of year
        158,200,000 162,800,000 146,000,000 119,200,000 75,000,000 197,000,000 84,100,000 94,000,000 77,400,000 100,400,000 112,900,000 102,500,000 94,100,000 77,300,000 116,600,000 53,600,000 71,600,000 49,900,000 199,100,000 121,300,000 69,400,000 130,700,000 119,200,000        
          cash and bank deposits at end of period
        192,600,000 -866,900,000 957,100,000 237,700,000  30,700,000 -146,400,000 279,100,000  57,600,000 -14,800,000 123,100,000  -8,100,000 44,800,000 106,600,000  -1,400,000 -438,700,000 561,800,000  -61,800,000 -171,600,000 337,200,000  16,200,000 -1,300,000 62,100,000 114,700,000 -209,400,000 308,900,000 -46,900,000 10,000,000 107,000,000 -5,900,000 -26,900,000 120,700,000 84,100,000 76,200,000 15,200,000 -54,200,000 102,000,000 102,500,000 56,600,000 51,700,000 171,900,000 -1,400,000 50,100,000 5,200,000 9,300,000 84,800,000 17,800,000 -8,700,000 135,500,000 -31,000,000 2,200,000 61,000,000 -31,200,000 34,400,000 60,500,000 10,900,000 -12,100,000 131,300,000 -9,400,000 -5,800,000 139,700,000  17,400,000 -43,900,000 139,300,000 
          cash related to reinsurance transaction
                                                                              
          amortization of the deferred gain on reinsurance
                                                                              
          issuance of long-term debt
                         446,000,000           347,200,000                            
          repayment of long-term debt
                                                                             
          issuances of common stock
         1,500,000    1,400,000                                                                 
          repurchases of common stock
         -250,900,000    -200,000,000                                                                 
          cash received related to active life volatility cover agreement
                     22,500,000 17,900,000                                                   
          purchase of fixed maturity securities
                                             -959,500,000 -904,400,000 -1,223,600,000 -863,000,000 -721,900,000 -845,700,000                            
          purchase of other investments
                                             -127,600,000 -95,600,000 -93,000,000 -106,000,000 -43,400,000 -52,600,000 -92,900,000 -21,800,000 -93,500,000 -37,800,000 -52,600,000 -125,700,000 -54,700,000 -52,900,000 -152,700,000 -125,800,000 -99,700,000 -80,100,000                
          net purchases of short-term investments
            -534,200,000 -161,400,000                481,200,000    82,100,000   194,500,000                       -249,400,000         202,000,000 -447,700,000 -40,100,000        
          net cash used by investing activities
            48,700,000 -119,700,000   -227,300,000 -225,400,000 -232,700,000 -40,500,000 -264,700,000 -176,900,000   -434,800,000 -399,100,000   822,400,000 600,000   -187,600,000 -198,700,000   14,200,000   -101,500,000 -152,000,000 -124,400,000 331,900,000 -742,000,000 -110,500,000 -233,600,000       -249,900,000 -332,300,000   44,600,000   -592,200,000   -195,900,000   -122,000,000 -278,800,000 -305,200,000 157,600,000   -388,500,000   -529,800,000 -313,100,000 -579,300,000 -168,200,000 
          short-term debt repayment
                                                                             
          cost related to early retirement of debt
                             -1,800,000                                           
          cash and bank deposits at end of year
                                                                              
          net investment (gain) loss
                                                                              
          net decrease in cash and bank deposits
                                             -18,400,000  15,200,000               -31,000,000 2,200,000 -8,400,000       -9,400,000    17,400,000   
          instrument
                                                                              
          united states government and government agencies and authorities
                                                                              
          net sales and maturities of short-term investments
               25,700,000    183,800,000    190,200,000    769,000,000                                                   
          net sales (purchases) of short-term investments
                        9,400,000       15,500,000    -217,900,000          259,800,000 -273,300,000 -66,700,000 333,100,000 256,300,000 -17,200,000      107,700,000      -38,500,000   -63,000,000 18,700,000 157,200,000     -464,600,000 -428,500,000 305,900,000    
          net decrease in payables for collateral on investments
                   -60,300,000             -6,600,000 2,500,000 7,900,000 -107,900,000 -69,500,000 -74,500,000 -14,000,000                                        
          net maturities and sales (purchases) of short-term investments
                 115,700,000                                                             
          change in insurance reserves and liabilities
                    -156,500,000 -13,100,000 -74,100,000 -38,300,000 -149,500,000 -154,500,000 87,100,000 291,100,000 1,480,800,000 -114,600,000 176,300,000 67,500,000 73,500,000 59,000,000 152,900,000 90,700,000 810,300,000 107,500,000 183,800,000 104,000,000 115,400,000 128,700,000 63,100,000 98,000,000 113,000,000 98,400,000 120,600,000 101,000,000 166,900,000 197,600,000 167,300,000 112,600,000 155,000,000 58,500,000 194,700,000 82,200,000 201,000,000 271,200,000 190,600,000 107,600,000 393,900,000 199,800,000   349,700,000              
          proceeds from universal life policyholder account deposits
                                                                              
          payments for universal life policyholder account withdrawals
                                                                              
          standard
                                                                              
          asu 2020-06, debt—debt with conversion and other options (subtopic 470-20) and derivatives and hedging—contracts in entity's own equity (subtopic 815-40): accounting for convertible instruments and contracts in an entity's own equity
                                                                              
          net sales of short-term investments
                                      450,900,000   10,400,000   70,900,000       524,400,000 208,200,000 -199,500,000 -206,300,000 426,300,000   91,500,000   28,000,000   283,800,000            101,600,000 58,700,000 
          proceeds from policyholder account deposits
                     29,500,000 30,200,000 31,200,000                                                       
          payments for policyholder account withdrawals
                     -16,800,000 -17,200,000 -21,600,000                                                       
          adjustments to reconcile net income to net cash provided (used) by operating activities
                                                                              
          net cash provided (used) by operating activities
                       325,800,000    -162,000,000                                           277,700,000   -65,700,000     
          accounting standards codification
                                                                              
          asc 740 "income taxes"
                                                                              
          net realized investment (gain) loss
                                   -1,100,000                 -25,600,000 -14,900,000      46,100,000 -10,400,000 3,700,000 -4,800,000 5,800,000 -2,500,000 71,400,000 -65,500,000 3,200,000   -24,200,000        
          cash related to reinsurance agreement
                         -456,800,000                                                   
          net realized investment loss
                          -900,000 -84,600,000 -1,304,900,000 -4,400,000 -33,800,000 144,000,000      2,600,000 2,200,000 -9,800,000 -8,100,000 -11,000,000 -11,000,000 -5,300,000 20,500,000 15,300,000          64,600,000   68,500,000             25,100,000 26,400,000 88,200,000     
          net cash provided (used) by financing activities
                                             -184,900,000 176,000,000          -353,300,000   -29,100,000      -225,600,000      -26,100,000      -23,500,000 
          net cash from investing activities
                           588,600,000                                                   
          acquisition of business
                                                                      89,000,000  -2,800,000 
          net cash from financing activities
                                                                    -30,100,000          
          asc 220 "income statement - reporting comprehensive income"
                                                                              
          asc 310 "receivables - nonrefundable fees and other costs"
                                                                              
          asc 718 "compensation - stock compensation"
                                                                              
          net realized investment gain
                                              -6,300,000  -13,300,000 -10,300,000 -12,400,000 -15,200,000                           
          short-term debt repayments
                                                   -225,100,000                           
          long-term debt repayments
                                 -351,500,000 -15,000,000 -15,000,000 -15,000,000 -15,000,000 -15,000,000 -15,000,000 -18,300,000 -15,200,000 -375,000,000 -10,800,000 -13,200,000 -29,100,000 -15,000,000 -15,000,000 -15,000,000 -71,200,000 -17,500,000 -24,200,000 -33,300,000 -20,400,000 -4,100,000 -4,700,000 -12,800,000 -49,500,000 -17,500,000 -2,500,000 -37,000,000 -160,000,000 -300,000,000 -400,000,000              
          acquisition of business, net of cash acquired
                                                                              
          asc 820 "fair value measurement"
                                                                              
          asc 835 "interest - imputation of interest"
                                                                              
          non-cash adjustments to net investment income
                                              -96,700,000 51,600,000 -98,700,000 -96,100,000 -100,900,000 -112,600,000 -126,100,000 -77,200,000 -48,500,000 -74,700,000 -112,800,000 -72,400,000 -81,200,000 -119,200,000 -79,300,000 -105,400,000 -117,700,000 -82,400,000 -102,100,000              
          net short-term debt repayments
                                              -14,900,000       -45,000,000   35,000,000         -200,000,000 -2,000,000 -25,000,000           
          net short-term debt borrowings
                                               -13,100,000 -82,700,000 -219,500,000 59,900,000     16,400,000                       
          assets
                                                                              
          fixed maturity securities
                                               3,400,000                               
          mortgage loans
                                               40,800,000                               
          policy loans
                                               129,400,000                               
          other long-term investments
                                                                              
          derivatives
                                               -11,900,000                               
          equity securities
                                               1,200,000                               
          miscellaneous long-term investments
                                               5,300,000                               
          liabilities
                                                                              
          policyholders' funds
                                                                              
          deferred annuity products
                                               100,000                               
          supplementary contracts without life contingencies
                                               -1,700,000                               
          long-term debt
                                               -12,700,000                               
          other liabilities
                                                                              
          embedded derivative in modified coinsurance arrangement
                                               300,000                               
          unfunded commitments to investment partnerships
                                               -14,900,000                               
          effect of foreign exchange rate changes on cash
                                                     -100,000 400,000 -100,000 -6,400,000   500,000 800,000 100,000 -500,000 600,000 100,000 -500,000 -1,200,000 -300,000 -200,000 -200,000 600,000        
          net cash (used) provided by investing activities
                                                  -181,800,000                            
          proceeds from sales of available-for-sale securities
                                                   243,700,000 463,000,000 467,300,000 516,300,000 107,800,000 682,500,000 400,300,000 478,800,000 371,000,000 212,100,000 746,600,000 436,000,000                
          proceeds from maturities of available-for-sale securities
                                                   400,500,000 343,000,000 274,100,000 276,800,000 191,000,000 127,900,000 715,100,000 161,500,000 277,100,000 332,400,000 244,900,000 213,200,000                
          purchase of available-for-sale securities
                                                   -898,600,000 -1,255,600,000 -825,100,000 -752,500,000 -970,900,000 -755,400,000 -1,691,200,000 -748,200,000 -865,200,000 -1,017,900,000 -1,126,000,000 -753,300,000                
          other comprehensive income
                                                                              
          change in net unrealized gains and losses on securities before reclassification adjustment:
                                                                              
          change in net unrealized gains and losses on securities not other-than-temporarily impaired
                                                   -77,300,000  423,200,000                         
          change in net unrealized gains and losses on securities other-than-temporarily impaired
                                                   -2,100,000  15,400,000                         
          total change in net unrealized gains and losses on securities before reclassification adjustment
                                                   -79,400,000  438,600,000                         
          reclassification adjustment for net realized investment gain
                                                   -600,000          -1,300,000                 
          change in net gain on cash flow hedges
                                                   -9,900,000 -14,000,000 71,900,000 -69,600,000 -10,700,000 114,600,000 -70,800,000 33,000,000 46,700,000 -31,400,000 -13,700,000                 
          change in adjustment to reserves for future policy and contract benefits, net of reinsurance and other
                                                   113,200,000 -184,200,000 -580,200,000 -698,200,000 94,800,000                       
          change in foreign currency translation adjustment
                                                   26,800,000 -62,300,000 -164,900,000 153,300,000 -18,200,000 -118,900,000 1,300,000 -900,000 4,700,000 9,500,000 5,700,000                 
          change in unrecognized pension and postretirement benefit costs
                                                   5,100,000 18,600,000 5,600,000 -5,500,000 7,500,000 3,700,000 -200,000 1,900,000 2,600,000 18,800,000 -16,600,000                 
          total other comprehensive income
                                                   55,200,000 61,900,000 -245,600,000                         
          comprehensive income
                                                   280,600,000 291,700,000 -291,700,000 1,026,500,000 43,100,000 -604,200,000 74,300,000 -30,700,000   109,200,000                 
          net (purchases) sales of short-term investments
                                                                              
          purchases of treasury stock
                                                        -350,000,000 -350,000,000                    
          reclassification adjustment for net realized investment
                                                    -2,200,000                          
          adjustments to reconcile net income to
                                                                              
          change in net unrealized gains and losses on securities
                                                                              
          not other-than-temporarily impaired before reclassification adjustment
                                                    306,000,000                          
          maturities and benefit payments from policyholder accounts
                                                     -100,000 -300,000 -600,000 -1,000,000 -1,200,000 -7,400,000 -500,000 -600,000 -4,000,000 -500,000 -1,400,000 -4,400,000 -1,000,000 -1,100,000 -4,300,000 -2,000,000 -2,500,000 -4,800,000 -6,200,000 -2,200,000 -9,400,000  -3,600,000 -3,000,000 -5,600,000 
          reclassification adjustment for net realized investment loss
                                                     -16,600,000 -22,500,000 57,400,000                       
          change in income tax liabilities
                                                       91,400,000 -26,100,000 -28,000,000 49,500,000 39,800,000 -3,600,000 49,200,000 -78,900,000 -7,400,000 13,000,000              
          other comprehensive loss
                                                                              
          change in net unrealized gains and losses on securities before reclassification adjustment
                                                       -252,600,000                       
          total other comprehensive loss
                                                       -121,800,000  -2,900,000 -193,800,000  -370,900,000 -69,100,000                 
          cash received from reinsurance recapture
                                                                              
          disposition of business
                                                           98,800,000       18,800,000        
          reclassification adjustment for net realized
                                                                              
          investment loss
                                                                              
          change in adjustment to reserves for future policy and contract benefits, net of reinsurance
                                                        277,600,000 91,100,000 174,400,000                    
          change in net unrealized gains and losses on securities before
                                                                              
          reclassification adjustment
                                                         -23,200,000 -403,800,000 669,000,000                   
          investment
                                                                              
          change in net unrealized gain on securities before
                                                                              
          investment gain
                                                          1,600,000                    
          comprehensive loss
                                                                              
          change in net unrealized gain on securities before reclassification adjustment
                                                             -43,200,000                 
          change in deferred policy acquisition costs
                                                              -11,600,000 -11,400,000 -16,100,000              
          amortization of value of business acquired
                                                              2,100,000                
          deposits to policyholder accounts
                                                              400,000 400,000 700,000 800,000 700,000 800,000 700,000 800,000 1,200,000 1,800,000 2,000,000 1,800,000 400,000 1,500,000 2,300,000 2,000,000 
          premium income
                                                                 93,200,000 -61,900,000 93,200,000 57,600,000 -61,900,000 93,200,000        
          u.s. brokerage
                                                              2,200,000 3,900,000 283,100,000              
          group income protection
                                                                              
          group long-term income protection
                                                              -5,400,000 4,500,000 485,300,000              
          group short-term income protection
                                                              -1,800,000 -1,400,000 134,500,000              
          group life and accidental death & dismemberment
                                                                              
          group life
                                                              -28,000,000 2,400,000 320,100,000              
          accidental death & dismemberment
                                                              -2,900,000 300,000 38,700,000              
          supplemental and voluntary
                                                                              
          individual income protection – recently issued
                                                                             
          long-term care
                                                              2,900,000 600,000 120,600,000              
          voluntary workplace benefits
                                                              2,200,000 400,000 94,400,000              
          unum limited
                                                              6,000,000 1,700,000 38,100,000              
          individual income protection
                                                              900,000 7,400,000              
          colonial
                                                              900,000 22,900,000              
          income protection
                                                              1,500,000 3,000,000 129,800,000              
          life
                                                              700,000 2,500,000 30,000,000              
          cancer and critical illness
                                                              1,100,000 1,400,000 42,800,000              
          individual income protection – closed block
                                                              -6,400,000                
          net investment income and other income
                                                                              
          corporate
                                                              1,000,000 -3,000,000 18,000,000              
          change insurance reserves and liabilities
                                                                              
          proceeds from sales of investments
                                                                684,300,000 364,500,000 723,500,000 330,900,000 377,900,000 411,600,000 475,500,000  591,000,000 1,079,400,000  103,400,000 1,254,200,000 1,334,300,000 
          proceeds from maturities of investments
                                                                433,400,000 287,100,000 372,400,000 309,000,000 510,300,000 608,700,000 427,200,000  849,000,000 612,700,000  344,200,000 334,900,000 357,400,000 
          purchase of investments
                                                                -1,233,800,000 -750,800,000 -1,411,700,000 -1,103,700,000 -928,000,000 -974,100,000 -1,115,100,000  -2,410,300,000 -1,197,500,000  -533,300,000 -2,267,100,000 -1,907,700,000 
          individual income protection - recently issued
                                                                110,200,000              
          individual income protection - closed block
                                                                271,000,000              
          policy acquisition costs capitalized
                                                                 -119,500,000 -145,000,000 -137,600,000 -137,900,000 -149,400,000 -158,600,000 -170,600,000 -182,500,000 -180,200,000     
          amortization and depreciation
                                                                 133,000,000 141,100,000 136,300,000 132,000,000 130,500,000 132,100,000 144,100,000 144,500,000 142,500,000     
          impairment of intangible assets
                                                                    856,400,000        
          insurance reserves and liabilities
                                                                 188,800,000 327,200,000 317,200,000 297,500,000 462,300,000 482,000,000 429,500,000 451,400,000 806,600,000     
          income tax
                                                                 -8,100,000 38,600,000 20,600,000 71,000,000 35,900,000 -229,100,000 32,500,000 42,800,000 -105,700,000     
          cash transferred to reinsurer for individual income protection - closed block restructuring transaction
                                                                              
          total revenue
                                                                 109,300,000 -72,400,000 109,300,000 70,000,000 -72,400,000 109,300,000        
          income before income tax, excluding loss on sale and write-downs
                                                                 11,400,000             
          loss on sale and write-downs
                                                                 -600,000             
          income before income tax
                                                                 10,800,000 -119,000,000 10,800,000 124,400,000 -119,000,000 10,800,000        
          income excluding loss on sale and write-downs
                                                                 7,400,000             
          loss on sale and write-downs, net of income tax
                                                                 -400,000             
          loss
                                                                 7,000,000             
          loss per share
                                                                              
          basic
                                                                 30,000 -250,000 20,000 270,000 -250,000 20,000        
          assuming dilution
                                                                 30,000 -250,000 20,000 260,000 -250,000 20,000        
          income from discontinued operations
                                                                   7,000,000   7,000,000        
          income per share
                                                                              
          cash transferred to reinsurer on amendment of existing contract from coinsurance to modified coinsurance
                                                                             
          income before income tax, excluding loss on sale
                                                                              
          loss on sale
                                                                              
          income excluding loss on sale
                                                                    7,300,000          
          loss on sale, after income tax
                                                                              
          income
                                                                    78,200,000          
          income before income tax excluding loss on sale
                                                                              
          proceeds from sales of long-term investments
                                                                              
          proceeds from maturities of long-term investments
                                                                              
          purchase of long-term investments
                                                                              
          net short-term debt and commercial paper repayments
                                                                          -100,000   
          treasury stock acquired
                                                                             
          effect of foreign exchange rate on cash
                                                                       -700,000 2,000,000 -500,000  400,000 500,000 -200,000 
          cash and bank deposits at beginning of period
                                                                       144,700,000  123,900,000 
          net income, as reported
                                                                         -246,400,000     
          stock-based employee compensation expense determined under sfas 123, net of tax
                                                                         5,900,000     
          pro forma net income
                                                                         -252,300,000     
          net income per share
                                                                              
          basic – as reported
                                                                              
          basic – pro forma
                                                                              
          assuming dilution – as reported
                                                                              
          assuming dilution – pro forma
                                                                              
          cash transferred to reinsurer on amendment of existing contract from
                                                                              
          coinsurance to modified coinsurance
                                                                         -286,200,000     
          net short-term debt and commercial paper borrowings
                                                                         -47,800,000    2,200,000 
          basic–as reported
                                                                         -1,020,000     
          basic–pro forma
                                                                         -1,040,000     
          assuming dilution–as reported
                                                                         -1,020,000     
          assuming dilution–pro forma
                                                                         -1,040,000     
          amortization of policy acquisition costs
                                                                              
          amortization of value of business acquired and goodwill
                                                                              
          reinsurance receivable
                                                                              
          federal income tax
                                                                              
          available-for-sale securities
                                                                              
          held-to-maturity securities
                                                                              
          other investments
                                                                              
          numerator
                                                                              
          denominator
                                                                              
          weighted-average common shares - basic
                                                                              
          dilutive securities
                                                                           -409,300,000   
          weighted-average common shares - assuming dilution
                                                                              
          weighted-average common shares—basic
                                                                              
          weighted-average common shares—assuming dilution
                                                                              
          employee benefits
                                                                             78,200,000 
          individual
                                                                             585,500,000 
          total
                                                                             674,700,000