v3.24.1.u1
Equity - Rollforward of accumulated other comprehensive income (loss) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balance, beginning of period $ 12,635 $ 10,319
Change in unrealized depreciation of investments (a)   4,020
Change in fair value of market risk benefits attributable to changes in our own credit risk (29) 94
Change in discount rates assumptions of certain liabilities 695 (595)
Change in future policy benefits and other (127) (116)
Change in cash flow hedges (25) (7)
Change in foreign currency translation adjustments (4) 37
Change in net actuarial loss 0 3
Change in deferred tax asset (liability) (79) (631)
Other comprehensive income (loss) (644) 2,805
Balance, end of period 12,386 12,465
Total    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balance, beginning of period (13,458) (16,863)
Change in unrealized depreciation of investments (a) (1,075)  
Other comprehensive income (loss) (643) 2,796
Balance, end of period (14,139) (14,067)
Unrealized Appreciation (Depreciation) of Fixed Maturity Securities on Which allowance for credit losses was Taken    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balance, beginning of period (79) (92)
Other comprehensive income (loss) 35 30
Balance, end of period (44) (62)
Unrealized Appreciation (Depreciation) of All Other Investments    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balance, beginning of period (14,650) (19,380)
Other comprehensive income (loss) (1,176) 3,132
Other (39)  
Balance, end of period (15,865) (16,248)
Change in fair value of market risk benefits attributable to changes in our own credit risk    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balance, beginning of period (909) (365)
Other comprehensive income (loss) (23) 74
Balance, end of period (932) (291)
Change in unrealized depreciation of investments    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Change in unrealized depreciation of investments (a) (1,120) 3,982
Change in future policy benefits and other (127) (116)
Change in deferred tax asset (liability) 71 (734)
Other comprehensive income (loss) (1,176) 3,132
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balance, beginning of period 2,095 2,908
Other comprehensive income (loss) 543 (465)
Balance, end of period 2,638 2,443
Cash Flow Hedges    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balance, beginning of period 146 157
Other comprehensive income (loss) (20) (4)
Other 1  
Balance, end of period 127 153
Foreign Currency Translation Adjustments    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balance, beginning of period (63) (100)
Other comprehensive income (loss) (3) 36
Balance, end of period (65) (73)
Retirement Plan Liabilities Adjustment    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Balance, beginning of period 2 9
Other comprehensive income (loss) 0 2
Balance, end of period 2 11
Noncontrolling interests    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Other (38)  
Noncontrolling interests (1) 9
Foreign Currency Translation Adjustments    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Noncontrolling interests (1) 9
Unrealized Appreciation (Depreciation) of Fixed Maturity Securities on Which allowance for credit losses was Taken    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Change in unrealized depreciation of investments (a) 45 38
Change in deferred tax asset (liability) (10) (8)
Other comprehensive income (loss) 35 30
Change in fair value of market risk benefits attributable to changes in our own credit risk    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Change in fair value of market risk benefits attributable to changes in our own credit risk (29) 94
Change in deferred tax asset (liability) 6 (20)
Other comprehensive income (loss) (23) 74
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Change in discount rates assumptions of certain liabilities 695 (595)
Change in deferred tax asset (liability) (152) 130
Other comprehensive income (loss) 543 (465)
Cash Flow Hedges    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Change in cash flow hedges (25) (7)
Change in deferred tax asset (liability) 5 3
Other comprehensive income (loss) (20) (4)
Foreign Currency Translation Adjustments    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Change in foreign currency translation adjustments (4) 37
Change in deferred tax asset (liability) 1 (1)
Other comprehensive income (loss) (3) 36
Retirement Plan Liabilities Adjustment    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]    
Change in net actuarial loss 0 3
Change in deferred tax asset (liability) 0 (1)
Other comprehensive income (loss) $ 0 $ 2