v3.23.1
Insurance Liabilities - Future policy benefits (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   $ 56,371
Effect of changes in cash flow assumptions $ 134 110
Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   1,769
Adjustments for the reclassification from/(to) the liability for the future policy benefits   1,698
Unexpired Risk Reserve    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   1,795
Adjustments for the reclassification from/(to) the liability for the future policy benefits   248
Individual Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   1,323
Effect of changes in cash flow assumptions 0 0
Individual Retirement | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   67
Adjustments for the reclassification from/(to) the liability for the future policy benefits   65
Group Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   279
Effect of changes in cash flow assumptions 0 0
Group Retirement | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   8
Adjustments for the reclassification from/(to) the liability for the future policy benefits   8
Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   14,126
Effect of changes in cash flow assumptions 140 193
Life Insurance | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   5
Adjustments for the reclassification from/(to) the liability for the future policy benefits   0
Life Insurance | Unexpired Risk Reserve    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   1,661
Adjustments for the reclassification from/(to) the liability for the future policy benefits   248
Institutional Markets    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   11,630
Effect of changes in cash flow assumptions (6) 0
Institutional Markets | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   830
Adjustments for the reclassification from/(to) the liability for the future policy benefits   766
Institutional Markets | Unexpired Risk Reserve    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   2
Adjustments for the reclassification from/(to) the liability for the future policy benefits   0
Corporate & Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   29,013
Effect of changes in cash flow assumptions $ 0 (83)
Corporate & Other | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   859
Adjustments for the reclassification from/(to) the liability for the future policy benefits   859
Corporate & Other | Unexpired Risk Reserve    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   132
Adjustments for the reclassification from/(to) the liability for the future policy benefits   0
As Previously Reported    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   45,955
As Previously Reported | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   71
As Previously Reported | Unexpired Risk Reserve    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   1,547
As Previously Reported | Individual Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   1,309
As Previously Reported | Individual Retirement | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   2
As Previously Reported | Group Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   282
As Previously Reported | Group Retirement | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   0
As Previously Reported | Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   11,129
As Previously Reported | Life Insurance | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   5
As Previously Reported | Life Insurance | Unexpired Risk Reserve    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   1,413
As Previously Reported | Institutional Markets    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   11,029
As Previously Reported | Institutional Markets | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   64
As Previously Reported | Institutional Markets | Unexpired Risk Reserve    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   2
As Previously Reported | Corporate & Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Liability for future policy benefits   22,206
As Previously Reported | Corporate & Other | Long-Duration Insurance Contracts    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   0
As Previously Reported | Corporate & Other | Unexpired Risk Reserve    
Liability for Future Policy Benefit, Activity [Line Items]    
Deferred profit liability   132
Adjustments for the reclassification to the deferred profit liability    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   (1,698)
Adjustments for the reclassification to the deferred profit liability | Individual Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   (65)
Adjustments for the reclassification to the deferred profit liability | Group Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   (8)
Adjustments for the reclassification to the deferred profit liability | Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   0
Adjustments for the reclassification to the deferred profit liability | Institutional Markets    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   (766)
Adjustments for the reclassification to the deferred profit liability | Corporate & Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   (859)
Change in cash flow assumptions and effect of net premiums exceeding gross premiums    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   63
Change in cash flow assumptions and effect of net premiums exceeding gross premiums | Individual Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   (14)
Change in cash flow assumptions and effect of net premiums exceeding gross premiums | Group Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   2
Change in cash flow assumptions and effect of net premiums exceeding gross premiums | Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   16
Change in cash flow assumptions and effect of net premiums exceeding gross premiums | Institutional Markets    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   4
Change in cash flow assumptions and effect of net premiums exceeding gross premiums | Corporate & Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   55
Effect of the remeasurement of the liability at a current single A rate    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   12,462
Effect of the remeasurement of the liability at a current single A rate | Individual Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   156
Effect of the remeasurement of the liability at a current single A rate | Group Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   63
Effect of the remeasurement of the liability at a current single A rate | Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   2,977
Effect of the remeasurement of the liability at a current single A rate | Institutional Markets    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   1,655
Effect of the remeasurement of the liability at a current single A rate | Corporate & Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   7,611
Adjustment for the removal of loss recognition balances related to unrealized gain or loss on securities and other    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   (411)
Adjustment for the removal of loss recognition balances related to unrealized gain or loss on securities and other | Individual Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   (63)
Adjustment for the removal of loss recognition balances related to unrealized gain or loss on securities and other | Group Retirement    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   (60)
Adjustment for the removal of loss recognition balances related to unrealized gain or loss on securities and other | Life Insurance    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   4
Adjustment for the removal of loss recognition balances related to unrealized gain or loss on securities and other | Institutional Markets    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   (292)
Adjustment for the removal of loss recognition balances related to unrealized gain or loss on securities and other | Corporate & Other    
Liability for Future Policy Benefit, Activity [Line Items]    
Effect of changes in cash flow assumptions   $ 0