v3.26.1
Derivatives (Primary Risks) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount $ 257,307   $ 257,307   $ 251,076
Estimated Fair Value Assets 7,549   7,549   7,045
Estimated Fair Value Liabilities 7,413   7,413   7,548
Gain (Loss) on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net (13) $ 2 (9) $ 14  
Accumulated Other Comprehensive Income Loss (1,700)   (1,700)   (2,100)
Cash Flow Hedges [Member]          
Derivatives, Fair Value [Line Items]          
Derivative, Gain (Loss) on Derivative, Net 0 0 0 0  
Cash Flow Hedges [Member] | Foreign currency swaps          
Derivatives, Fair Value [Line Items]          
Derivative, Gain (Loss) on Derivative, Net 0 0 0 0  
Cash Flow Hedges [Member] | Interest rate contracts          
Derivatives, Fair Value [Line Items]          
Derivative, Gain (Loss) on Derivative, Net 0 0 0 0  
Not Designated as Hedging Instrument, Economic Hedge | Derivative Contract [Domain]          
Derivatives, Fair Value [Line Items]          
Derivative, Gain (Loss) on Derivative, Net     (166) (130)  
Derivatives Designated as Hedging Instruments:          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 68,477   68,477   66,071
Estimated Fair Value Assets 3,626   3,626   3,626
Estimated Fair Value Liabilities 4,131   4,131   4,238
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member]          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 9,466   9,466   6,531
Estimated Fair Value Assets 981   981   956
Estimated Fair Value Liabilities 731   731   728
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member] | Interest rate swaps          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 4,986   4,986   4,924
Estimated Fair Value Assets 910   910   923
Estimated Fair Value Liabilities 712   712   706
Derivatives Designated as Hedging Instruments: | Fair Value Hedges [Member] | Foreign currency swaps          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 4,480   4,480   1,607
Estimated Fair Value Assets 71   71   33
Estimated Fair Value Liabilities 19   19   22
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member]          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 54,802   54,802   55,488
Estimated Fair Value Assets 2,290   2,290   2,374
Estimated Fair Value Liabilities 3,394   3,394   3,500
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member] | Interest rate swaps          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 3,754   3,754   4,002
Estimated Fair Value Assets 0   0   0
Estimated Fair Value Liabilities 256   256   267
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member] | Interest rate forwards          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 4,009   4,009   4,389
Estimated Fair Value Assets 0   0   16
Estimated Fair Value Liabilities 1,073   1,073   1,049
Derivatives Designated as Hedging Instruments: | Cash Flow Hedges [Member] | Foreign currency swaps          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 47,039   47,039   47,097
Estimated Fair Value Assets 2,290   2,290   2,358
Estimated Fair Value Liabilities 2,065   2,065   2,184
Derivatives Designated as Hedging Instruments: | Foreign Operations Hedges [Member]          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 4,209   4,209   4,052
Estimated Fair Value Assets 355   355   296
Estimated Fair Value Liabilities 6   6   10
Derivatives Designated as Hedging Instruments: | Foreign Operations Hedges [Member] | Foreign currency forwards          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 1,209   1,209   1,052
Estimated Fair Value Assets 30   30   32
Estimated Fair Value Liabilities 6   6   10
Derivatives Designated as Hedging Instruments: | Foreign Operations Hedges [Member] | Currency options          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 3,000   3,000   3,000
Estimated Fair Value Assets 325   325   264
Estimated Fair Value Liabilities 0   0   0
Derivatives Not Designated or Not Qualifying as Hedging Instruments:          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 188,830   188,830   185,005
Estimated Fair Value Assets 3,923   3,923   3,419
Estimated Fair Value Liabilities 3,282   3,282   3,310
Derivative, Gain (Loss) on Derivative, Net (860) $ (899) (1,113) $ (564)  
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate swaps          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 24,151   24,151   24,623
Estimated Fair Value Assets 1,355   1,355   1,409
Estimated Fair Value Liabilities 1,579   1,579   1,434
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate forwards          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 1,724   1,724   2,731
Estimated Fair Value Assets 0   0   16
Estimated Fair Value Liabilities 276   276   176
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate floors          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 5,390   5,390   5,640
Estimated Fair Value Assets 33   33   34
Estimated Fair Value Liabilities 0   0   0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate caps          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 15,147   15,147   14,898
Estimated Fair Value Assets 84   84   48
Estimated Fair Value Liabilities 2   2   1
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate futures          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 2,111   2,111   1,679
Estimated Fair Value Assets 2   2   1
Estimated Fair Value Liabilities 6   6   3
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Interest rate options          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 22,923   22,923   23,820
Estimated Fair Value Assets 172   172   155
Estimated Fair Value Liabilities 94   94   130
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Synthetic GICs          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 52,056   52,056   52,664
Estimated Fair Value Assets 0   0   0
Estimated Fair Value Liabilities 0   0   0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Foreign currency swaps          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 11,423   11,423   10,210
Estimated Fair Value Assets 1,242   1,242   1,167
Estimated Fair Value Liabilities 143   143   175
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Foreign currency forwards          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 13,967   13,967   15,694
Estimated Fair Value Assets 81   81   85
Estimated Fair Value Liabilities 673   673   1,012
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Currency futures          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 283   283   292
Estimated Fair Value Assets 1   1   0
Estimated Fair Value Liabilities 2   2   1
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Credit default swaps — purchased          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 2,646   2,646   2,739
Estimated Fair Value Assets 1   1   2
Estimated Fair Value Liabilities 51   51   58
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Credit default swaps — written          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 15,523   15,523   8,873
Estimated Fair Value Assets 260   260   153
Estimated Fair Value Liabilities 3   3   1
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity futures          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 1,086   1,086   1,380
Estimated Fair Value Assets 10   10   5
Estimated Fair Value Liabilities 7   7   2
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity index options          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 17,937   17,937   16,253
Estimated Fair Value Assets 682   682   337
Estimated Fair Value Liabilities 353   353   281
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity variance swaps          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 96   96   96
Estimated Fair Value Assets 0   0   0
Estimated Fair Value Liabilities 2   2   2
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Equity total return swaps          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 1,367   1,367   2,413
Estimated Fair Value Assets 0   0   7
Estimated Fair Value Liabilities 91   91   34
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Longevity Swaps          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 1,000   1,000   1,000
Derivative Liability, Not Subject to Master Netting Arrangement 0   0   0
Derivative Asset, Not Subject to Master Netting Arrangement 0   0   0
Derivatives Not Designated or Not Qualifying as Hedging Instruments: | Derivatives hedging MRBs          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 11,378   11,378   11,622
Estimated Fair Value Assets 289   289   164
Estimated Fair Value Liabilities 679   679   637
Not Designated as Hedging Instrument, Economic Hedge | Interest rate contracts          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 8,535   8,535   8,450
Estimated Fair Value Assets 17   17   10
Estimated Fair Value Liabilities 557   557   524
Not Designated as Hedging Instrument, Economic Hedge | Foreign currency exchange rate          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 217   217   328
Estimated Fair Value Assets 0   0   2
Estimated Fair Value Liabilities 3   3   9
Not Designated as Hedging Instrument, Economic Hedge | Equity          
Derivatives, Fair Value [Line Items]          
Derivative, Notional Amount 2,626   2,626   2,844
Estimated Fair Value Assets 272   272   152
Estimated Fair Value Liabilities $ 119   $ 119   $ 104