v3.26.1
Policyholder Contract Deposits and Other Policyholder Funds - Account balances by guaranteed minimum interest rates (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Jun. 30, 2025
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 105,204 $ 106,458
Policyholder account balance, percentage 100.00% 100.00%
At Guaranteed Minimum    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 44,459 $ 48,452
Policyholder account balance, percentage 42.00% 46.00%
1 Basis Point - 50 Basis Points Above    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 4,314 $ 4,316
Policyholder account balance, percentage 4.00% 4.00%
More than 50 Basis Points Above Minimum Guarantee    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 56,431 $ 53,690
Policyholder account balance, percentage 54.00% 50.00%
Individual Retirement    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 59,592 $ 58,783
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 1.00% 1.00%
Policyholder account balance $ 41,824 $ 40,300
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 2,515 $ 3,145
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 1.00% 1.00%
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 2.00% 2.00%
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 10,061 $ 9,559
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 2.00% 2.00%
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 3.00% 3.00%
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 4,787 $ 5,348
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 3.00% 3.00%
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 4.00% 4.00%
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 375 $ 398
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 4.00% 4.00%
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 5.00% 5.00%
Individual Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 5.00% 5.00%
Policyholder account balance $ 30 $ 33
Individual Retirement | At Guaranteed Minimum    
Policyholder Account Balance [Line Items]    
Policyholder account balance 14,997 16,674
Individual Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 2,522 2,826
Individual Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 1,789 2,121
Individual Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 5,533 5,991
Individual Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 4,752 5,311
Individual Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 371 394
Individual Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 30 31
Individual Retirement | 1 Basis Point - 50 Basis Points Above    
Policyholder Account Balance [Line Items]    
Policyholder account balance 1,430 1,303
Individual Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 1,217 1,084
Individual Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 45 48
Individual Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 137 138
Individual Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 31 33
Individual Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Individual Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Individual Retirement | More than 50 Basis Points Above Minimum Guarantee    
Policyholder Account Balance [Line Items]    
Policyholder account balance 43,165 40,806
Individual Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 38,085 36,390
Individual Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 681 976
Individual Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 4,391 3,430
Individual Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 4 4
Individual Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 4 4
Individual Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 2
Group Retirement    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 33,308 $ 34,645
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 1.00% 1.00%
Policyholder account balance $ 13,012 $ 12,631
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 4,105 $ 4,492
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 1.00% 1.00%
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 2.00% 2.00%
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 9,754 $ 10,669
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 2.00% 2.00%
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 3.00% 3.00%
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 494 $ 543
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 3.00% 3.00%
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 4.00% 4.00%
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 5,825 $ 6,182
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 4.00% 4.00%
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 5.00% 5.00%
Group Retirement | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 5.00% 5.00%
Policyholder account balance $ 118 $ 128
Group Retirement | At Guaranteed Minimum    
Policyholder Account Balance [Line Items]    
Policyholder account balance 20,595 22,186
Group Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 1,969 1,979
Group Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 2,860 3,156
Group Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 9,329 10,198
Group Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 494 543
Group Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 5,825 6,182
Group Retirement | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 118 128
Group Retirement | 1 Basis Point - 50 Basis Points Above    
Policyholder Account Balance [Line Items]    
Policyholder account balance 2,141 2,313
Group Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 1,467 1,452
Group Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 414 516
Group Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 260 345
Group Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Group Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Group Retirement | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Group Retirement | More than 50 Basis Points Above Minimum Guarantee    
Policyholder Account Balance [Line Items]    
Policyholder account balance 10,572 10,146
Group Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 9,576 9,200
Group Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 831 820
Group Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 165 126
Group Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Group Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Group Retirement | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Life Insurance    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 6,587 $ 6,830
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 1.00% 1.00%
Policyholder account balance $ 0 $ 0
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 472 $ 473
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 1.00% 1.00%
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 2.00% 2.00%
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 1,843 $ 1,894
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 2.00% 2.00%
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 3.00% 3.00%
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 1,536 $ 1,593
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 3.00% 3.00%
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 4.00% 4.00%
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 2,539 $ 2,665
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 4.00% 4.00%
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 5.00% 5.00%
Life Insurance | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 5.00% 5.00%
Policyholder account balance $ 197 $ 205
Life Insurance | At Guaranteed Minimum    
Policyholder Account Balance [Line Items]    
Policyholder account balance 3,807 4,037
Life Insurance | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Life Insurance | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Life Insurance | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 10 12
Life Insurance | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 1,061 1,155
Life Insurance | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 2,539 2,665
Life Insurance | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 197 205
Life Insurance | 1 Basis Point - 50 Basis Points Above    
Policyholder Account Balance [Line Items]    
Policyholder account balance 689 697
Life Insurance | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Life Insurance | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 114 111
Life Insurance | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 137 172
Life Insurance | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 438 414
Life Insurance | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Life Insurance | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Life Insurance | More than 50 Basis Points Above Minimum Guarantee    
Policyholder Account Balance [Line Items]    
Policyholder account balance 2,091 2,096
Life Insurance | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Life Insurance | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 358 362
Life Insurance | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 1,696 1,710
Life Insurance | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 37 24
Life Insurance | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Life Insurance | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Corporate & Other    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 5,717 $ 6,200
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 1.00% 1.00%
Policyholder account balance $ 2,465 $ 2,849
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 677 $ 780
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 1.00% 1.00%
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 2.00% 2.00%
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 1,443 $ 1,367
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 2.00% 2.00%
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 3.00% 3.00%
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 937 $ 1,002
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 3.00% 3.00%
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 4.00% 4.00%
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 186 $ 193
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5% | Minimum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 4.00% 4.00%
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5% | Maximum    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 5.00% 5.00%
Corporate & Other | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Minimum credit rating (as a percent) 5.00% 5.00%
Policyholder account balance $ 9 $ 9
Corporate & Other | At Guaranteed Minimum    
Policyholder Account Balance [Line Items]    
Policyholder account balance 5,060 5,555
Corporate & Other | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 2,463 2,848
Corporate & Other | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 640 740
Corporate & Other | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 1,381 1,300
Corporate & Other | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 384 468
Corporate & Other | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 183 190
Corporate & Other | At Guaranteed Minimum | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 9 9
Corporate & Other | 1 Basis Point - 50 Basis Points Above    
Policyholder Account Balance [Line Items]    
Policyholder account balance 54 3
Corporate & Other | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Corporate & Other | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 1 1
Corporate & Other | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 3 1
Corporate & Other | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 50 1
Corporate & Other | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Corporate & Other | 1 Basis Point - 50 Basis Points Above | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 0 0
Corporate & Other | More than 50 Basis Points Above Minimum Guarantee    
Policyholder Account Balance [Line Items]    
Policyholder account balance 603 642
Corporate & Other | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range Less Than 1%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 2 1
Corporate & Other | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 1% To 2%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 36 39
Corporate & Other | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 2% To 3%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 59 66
Corporate & Other | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 3% To 4%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 503 533
Corporate & Other | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 4% To 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance 3 3
Corporate & Other | More than 50 Basis Points Above Minimum Guarantee | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Greater than 5%    
Policyholder Account Balance [Line Items]    
Policyholder account balance $ 0 $ 0