v3.26.1
Derivatives (Effects on the Consolidated Statement of Operations and Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) $ (6,702) $ (5,661) $ (12,057) $ (10,546)
Net investment gains (losses) (428) (273) (1,098) (660)
Gain (Loss) on Derivative Instruments, Net, Pretax 772 796 698 364
Policyholder Benefits and Claims Incurred, Net (11,335) (10,767) (23,199) (22,573)
Interest credited to PABs (3,067) (2,400) (4,741) (4,047)
Operating Expenses 3,844 3,319 7,642 6,669
Not Designated as Hedging Instrument [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 4 9 (83) (86)
Net investment gains (losses) 0 0 0 0
Derivative, Gain (Loss) on Derivative, Net 860 899 1,113 564
Gain (Loss) on Derivative Instruments, Net, Pretax (177) (106) (277) (216)
Policyholder Benefits and Claims Incurred, Net (7) (2) (14) (4)
Interest credited to PABs (37) (34) (76) (74)
Operating Expenses 0 0 0 0
Other Comprehensive Income (Loss), before Tax 0 0 0 0
Fair Value Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 0 1 0 1
Net investment gains (losses) (1) 0 (1) (1)
Policyholder Benefits and Claims Incurred, Net (5) (6) (9) (10)
Interest credited to PABs (2) (1) (2) (1)
Operating Expenses 0 0 0 0
Other Comprehensive Income (Loss), before Tax (89)   (23)  
Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) (1) (7) (3) (26)
Net investment gains (losses) (22) 4 (30) 6
Derivative, Gain (Loss) on Derivative, Net 0 0 0 0
Interest credited to PABs 0 0 0 0
Operating Expenses 0 0 0 0
Other Comprehensive Income (Loss), before Tax (304) (2,138) 381 (2,283)
Net Investment Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment gains (losses) 0 0 0 0
Other Comprehensive Income (Loss), before Tax 45 (80) 117 (166)
Foreign Exchange Forward [Member] | Net Investment Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), before Tax       (143)
Synthetic GICs [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) on Derivative Instruments, Net, Pretax (20) (21) (39) (40)
Foreign currency hedged item [Member] | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 0 0 0 0
Net investment gains (losses) 110 (1,091) 350 (1,449)
Derivative, Gain (Loss) on Derivative, Net 0 0 0 0
Policyholder Benefits and Claims Incurred, Net 0 0 0 0
Interest credited to PABs 0 0 0 0
Operating Expenses 0 0 0 0
Other Comprehensive Income (Loss), before Tax 0 0 0 0
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment gains (losses) 0 0 0 0
Other Comprehensive Income (Loss), before Tax 40 (71) 108  
Interest rate contracts | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) (1) (6) (2) (23)
Net investment gains (losses) (16) 9 (15) 9
Derivative, Gain (Loss) on Derivative, Net 0 0 0 0
Policyholder Benefits and Claims Incurred, Net 0 0 0 0
Interest credited to PABs 0 0 0 0
Operating Expenses 0 0 0 0
Other Comprehensive Income (Loss), before Tax 15 (15) 13 (32)
Credit forwards [Member] | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 0 0 0 0
Net investment gains (losses) 0 0 0 0
Derivative, Gain (Loss) on Derivative, Net 0 0 0 0
Policyholder Benefits and Claims Incurred, Net 0 0 0 0
Interest credited to PABs 0 0 0 0
Operating Expenses 0 0 0 0
Other Comprehensive Income (Loss), before Tax 0 0 0 0
Currency Swap [Member] | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 0 (1) (1) (3)
Net investment gains (losses) (116) 1,086 (365) 1,446
Derivative, Gain (Loss) on Derivative, Net 0 0 0 0
Policyholder Benefits and Claims Incurred, Net 0 0 0 0
Interest credited to PABs 0 0 0 0
Operating Expenses 0 0 0 0
Other Comprehensive Income (Loss), before Tax 116 (1,087) 364 (1,449)
Derivative [Member] | Fair Value Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 0 0 0 0
Net investment gains (losses) 0 (1) 0 (4)
Policyholder Benefits and Claims Incurred, Net 0 0 0 0
Interest credited to PABs 0 0 0 0
Operating Expenses 0 0 0 0
Derivative [Member] | Interest rate swaps | Fair Value Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 1 0 1 (1)
Net investment gains (losses) 0 0 0 0
Policyholder Benefits and Claims Incurred, Net 33 (2) 39 (77)
Interest credited to PABs (27) (11) (41) (53)
Operating Expenses 0 0 0 0
Derivative [Member] | Currency Swap [Member] | Fair Value Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 78 (18) 54 28
Net investment gains (losses) (2) 5 (2) 13
Policyholder Benefits and Claims Incurred, Net 0 0 0 0
Interest credited to PABs 0 (87) (7) (123)
Operating Expenses 0 0 0 0
Debt Securities [Member] | Interest rate swaps | Fair Value Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 1 0 1 (1)
Net investment gains (losses) 0 0 0 0
Policyholder Benefits and Claims Incurred, Net 28 (8) 30 (87)
Interest credited to PABs (26) (12) (40) (52)
Operating Expenses 0 0 0 0
Debt Securities [Member] | Currency Swap [Member] | Fair Value Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 78 (17) 54 (27)
Net investment gains (losses) 1 (4) 1 (10)
Policyholder Benefits and Claims Incurred, Net 0 0 0 0
Interest credited to PABs (3) (87) (10) (123)
Operating Expenses 0 0 0 0
Non-derivative [Domain] [Member] | Net Investment Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), before Tax 5 (9) 9 (23)
Accumulated Other Comprehensive Income (Loss) | Credit forwards [Member] | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), before Tax 0 0 0 0
Accumulated Other Comprehensive Income (Loss) | Currency Swap [Member] | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), before Tax (339) (801) 110 (680)
Accumulated Other Comprehensive Income (Loss) | Derivative [Member] | Fair Value Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), before Tax (89)   (23)  
Accumulated Other Comprehensive Income (Loss) | Interest rate swaps | Cash Flow Hedging [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Other Comprehensive Income (Loss), before Tax (96) (235) (106) (122)
Foreign Exchange [Member] | Not Designated as Hedging Instrument [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 0 0 0 0
Derivative, Gain (Loss) on Derivative, Net 336 317 381 72
Credit derivatives — purchased | Not Designated as Hedging Instrument [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 0 0 0 0
Derivative, Gain (Loss) on Derivative, Net 6 6 1 15
Credit derivatives — written | Not Designated as Hedging Instrument [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 0 0 0 0
Derivative, Gain (Loss) on Derivative, Net (65) (38) (3) (11)
Equity Market Risk [Member] | Not Designated as Hedging Instrument [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 48 28 32 (11)
Derivative, Gain (Loss) on Derivative, Net 480 441 531 382
Interest Rate Risk [Member] | Not Designated as Hedging Instrument [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 0 0 0 0
Derivative, Gain (Loss) on Derivative, Net 202 272 294 174
Foreign currency hedged item [Member] | Not Designated as Hedging Instrument [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 0 0 0 0
Derivative, Gain (Loss) on Derivative, Net (99) (99) (91) (68)
Income Statement Location [Axis]: us-gaap:DescriptionOfEmbeddedDerivative        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) on Derivative Instruments, Net, Pretax 123 2 106 (1)
Income Statement Location [Axis]: us-gaap:EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet        
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (Loss) on Derivative Instruments, Net, Pretax (14) 22 (205) 57
Effects of Derivatives on Consolidated Statements of Operations and Comprehensive Income (Loss) [Member]        
Derivative Instruments, Gain (Loss) [Line Items]        
Net investment income (1) 51 31 (54) (100)
Net investment gains (losses) (23) 4 (31) 5
Derivative, Gain (Loss) on Derivative, Net 772 796 698  
Gain (Loss) on Derivative Instruments, Net, Pretax       364
Policyholder Benefits and Claims Incurred, Net (2) 4 (5) 6
Interest credited to PABs 35 35 74 73
Operating Expenses 0 0 0 0
Other Comprehensive Income (Loss), before Tax $ (348) $ (2,218) $ 475 $ (2,449)