Consolidated Summary of Investments - Other Than Investments in Related Parties (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	$ 255,915
Amount at Which Shown on Balance Sheet	242,479
Other invested assets - VIE	17,674	$ 17,040
Investments	242,479	247,603
Affiliated Entity [Member]
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Other invested assets - VIE	3,770	$ 4,100
Investments	3,900
Fixed Maturities [Member]
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	153,744
Estimated Fair  Value	140,832
Amount at Which Shown on Balance Sheet	140,832
U.S. government and agency
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	25,163
Estimated Fair  Value	21,843
Amount at Which Shown on Balance Sheet	21,843
Public utilities
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	5,003
Estimated Fair  Value	4,695
Amount at Which Shown on Balance Sheet	4,695
Municipals
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	5,373
Estimated Fair  Value	4,931
Amount at Which Shown on Balance Sheet	4,931
Foreign government
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	3,161
Estimated Fair  Value	2,948
Amount at Which Shown on Balance Sheet	2,948
All other corporate bonds
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	72,194
Estimated Fair  Value	65,988
Amount at Which Shown on Balance Sheet	65,988
Total bonds
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	110,894
Estimated Fair  Value	100,405
Amount at Which Shown on Balance Sheet	100,405
Mortgage-backed, asset-backed and collateralized loan obligations securities
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	42,117
Estimated Fair  Value	39,697
Amount at Which Shown on Balance Sheet	39,697
Redeemable preferred stock
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	733
Estimated Fair  Value	730
Amount at Which Shown on Balance Sheet	730
Mortgage loans
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	60,528
Amount at Which Shown on Balance Sheet	60,025
Policy loans
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	5,601
Amount at Which Shown on Balance Sheet	5,601
Real estate and real estate joint ventures
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	8,623
Amount at Which Shown on Balance Sheet	8,623
Real estate acquired in satisfaction of debt
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	279
Amount at Which Shown on Balance Sheet	279
Other limited partnership interests
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	7,054
Amount at Which Shown on Balance Sheet	7,054
Short-term investments
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	2,412
Amount at Which Shown on Balance Sheet	2,391
Other invested assets
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties [Line Items]
Cost or Amortized Cost	17,674
Amount at Which Shown on Balance Sheet	$ 17,674

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