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Investments (Fixed Maturities Securities Excluding Investments Classified as Trading) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost $ 334,598 $ 335,447
Gross Unrealized Gains 9,777 8,449
Gross Unrealized Losses 27,894 36,039
Fixed Maturities, AFS, allowance for credit losses 160 138
Fixed Maturities, available-for-sale, at fair value [1] 316,321 307,719
Amortized Cost 0 1,298
Gross Unrealized Gains 0 157
Gross Unrealized Losses 0 0
Fixed Maturities, Held-to-maturity, Fair Value 0 1,455
Fixed Maturities, HTM, allowance for credit losses 0 2
Amortized Cost, Net of Allowance [1] 0 1,296
U.S. Treasury securities and obligations of U.S. government authorities and agencies    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 24,874 29,372
Gross Unrealized Gains 1,091 1,110
Gross Unrealized Losses 4,169 4,413
Fixed Maturities, AFS, allowance for credit losses 0 0
Fixed Maturities, available-for-sale, at fair value 21,796 26,069
Obligations of U.S. states and their political subdivisions    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 8,650 10,179
Gross Unrealized Gains 267 238
Gross Unrealized Losses 459 728
Fixed Maturities, AFS, allowance for credit losses 0 0
Fixed Maturities, available-for-sale, at fair value 8,458 9,689
Foreign government bonds    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 71,556 74,103
Gross Unrealized Gains 3,895 4,503
Gross Unrealized Losses 5,208 5,379
Fixed Maturities, AFS, allowance for credit losses 53 1
Fixed Maturities, available-for-sale, at fair value 70,190 73,226
Amortized Cost 0 725
Gross Unrealized Gains 0 128
Gross Unrealized Losses 0 0
Fixed Maturities, Held-to-maturity, Fair Value 0 853
Fixed Maturities, HTM, allowance for credit losses 0 0
Amortized Cost, Net of Allowance 0 725
U.S. public corporate securities    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 105,593 99,854
Gross Unrealized Gains 2,357 1,311
Gross Unrealized Losses 9,711 13,563
Fixed Maturities, AFS, allowance for credit losses 67 16
Fixed Maturities, available-for-sale, at fair value 98,172 87,586
U.S. private corporate securities    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 42,801 39,867
Gross Unrealized Gains 807 507
Gross Unrealized Losses 2,574 3,438
Fixed Maturities, AFS, allowance for credit losses 14 57
Fixed Maturities, available-for-sale, at fair value 41,020 36,879
Foreign public corporate securities    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 20,473 22,235
Gross Unrealized Gains 487 416
Gross Unrealized Losses 1,298 1,945
Fixed Maturities, AFS, allowance for credit losses 19 19
Fixed Maturities, available-for-sale, at fair value 19,643 20,687
Amortized Cost 0 430
Gross Unrealized Gains 0 24
Gross Unrealized Losses 0 0
Fixed Maturities, Held-to-maturity, Fair Value 0 454
Fixed Maturities, HTM, allowance for credit losses 0 2
Amortized Cost, Net of Allowance 0 428
Foreign private corporate securities    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 35,128 32,755
Gross Unrealized Gains 613 150
Gross Unrealized Losses 3,446 5,201
Fixed Maturities, AFS, allowance for credit losses 5 44
Fixed Maturities, available-for-sale, at fair value 32,290 27,660
Asset-backed securities    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 12,514 12,972
Gross Unrealized Gains 202 166
Gross Unrealized Losses 119 286
Fixed Maturities, AFS, allowance for credit losses 2 1
Fixed Maturities, available-for-sale, at fair value 12,595 12,851
Commercial mortgage-backed securities    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 10,571 11,497
Gross Unrealized Gains 34 19
Gross Unrealized Losses 713 861
Fixed Maturities, AFS, allowance for credit losses 0 0
Fixed Maturities, available-for-sale, at fair value 9,892 10,655
Residential mortgage-backed securities    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 2,438 2,613
Gross Unrealized Gains 24 29
Gross Unrealized Losses 197 225
Fixed Maturities, AFS, allowance for credit losses 0 0
Fixed Maturities, available-for-sale, at fair value 2,265 2,417
Amortized Cost 0 143
Gross Unrealized Gains 0 5
Gross Unrealized Losses 0 0
Fixed Maturities, Held-to-maturity, Fair Value 0 148
Fixed Maturities, HTM, allowance for credit losses 0 0
Amortized Cost, Net of Allowance 0 143
Prudential Netting Agreement | U.S. private corporate securities    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 12,370 8,040
Fixed Maturities, available-for-sale, at fair value 12,370 8,040
Prudential Netting Agreement | Fixed Maturities    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Amortized Cost   4,250
Fixed Maturities, Held-to-maturity, Fair Value   4,250
Prudential Netting Agreement | Fixed Maturities | U.S. private corporate securities    
Summary Of Investments Other Than Investments In Related Parties Reportable Data [Line Items]    
Fixed Maturities, available-for-sale, Amortized Cost 12,370 8,040
Fixed Maturities, available-for-sale, at fair value $ 12,370 $ 8,040
[1] See Note 4 for details of balances associated with variable interest entities.