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SCHEDULE I - CONSOLIDATED SUMMARY OF INVESTMENTS - OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Summary of investments, other than investments in related parties [Line Items]
Cost	$ 132,670
Carrying Value	153,956
Trading Securities [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	4,072
Fair Value	4,501
Carrying Value	4,501
Mortgage Loans On Real Estate [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	16,972
Fair Value	18,219
Carrying Value	16,763
Real estate [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	10
Carrying Value	10
Policy loans [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	2,426
Carrying Value	2,426
Derivative Instruments [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	910
Fair Value	3,109
Carrying Value	3,109
Other Investments [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	3,974
Fair Value	3,974
Carrying Value	3,974
Fixed Maturity AFS Securities [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	104,174
Fair Value	123,044
Carrying Value	123,044
Fixed Maturity AFS Securities [Member] | Mortgage-Backed And Asset-Backed Securities [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	11,196
Fair Value	11,765
Carrying Value	11,765
Fixed Maturity AFS Securities [Member] | Hybrid And Redeemable Preferred Securities [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	548
Fair Value	615
Carrying Value	615
Fixed Maturity AFS Securities [Member] | Bonds [Member] | U.S. government and government agencies and authorities [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	397
Fair Value	484
Carrying Value	484
Fixed Maturity AFS Securities [Member] | Bonds [Member] | Foreign governments [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	384
Fair Value	470
Carrying Value	470
Fixed Maturity AFS Securities [Member] | Bonds [Member] | State And Municipal Bonds [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	5,360
Fair Value	6,921
Carrying Value	6,921
Fixed Maturity AFS Securities [Member] | Bonds [Member] | Public utilities [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	14,096
Fair Value	17,288
Carrying Value	17,288
Fixed Maturity AFS Securities [Member] | Bonds [Member] | All other corporate bonds [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	72,193
Fair Value	85,501
Carrying Value	85,501
Equity Securities [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	132
Fair Value	129
Carrying Value	129
Equity Securities [Member] | Nonredeemable preferred securities [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	50
Fair Value	40
Carrying Value	40
Equity Securities [Member] | Common Stock [Member] | Public utilities [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	5
Fair Value	7
Carrying Value	7
Equity Securities [Member] | Common Stock [Member] | Banks, trusts, and insurance companies [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	33
Fair Value	38
Carrying Value	38
Equity Securities [Member] | Common Stock [Member] | Industrial, miscellaneous and all other [Member]
Summary of investments, other than investments in related parties [Line Items]
Cost	44
Fair Value	44
Carrying Value	44
Parent Company [Member]
Summary of investments, other than investments in related parties [Line Items]
Derivative Liabilities	552	$ 110
Parent Company [Member] | Other Liabilities [Member]
Summary of investments, other than investments in related parties [Line Items]
Derivative Liabilities	$ 906

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