Fair Value (Financial Instruments Carried at Other Than Fair Value) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Assets
Policy loans	$ 876	$ 869
Liabilities
Separate account liabilities	96,995	106,225
Carrying Value
Assets
Mortgage loans	21,295	19,787
Policy loans	876	869
Other invested assets	104	85
Premiums, reinsurance and other receivables	3,080	3,075
Liabilities
Policyholder account balances	24,881	23,507
Long-term debt	840	841
Other liabilities	1,089	886
Separate account liabilities	1,304	1,437
Estimated Fair Value
Assets
Mortgage loans	21,083	20,591
Policy loans	983	1,038
Other invested assets	104	85
Premiums, reinsurance and other receivables	3,550	3,603
Liabilities
Policyholder account balances	24,366	23,487
Long-term debt	936	1,123
Other liabilities	1,089	876
Separate account liabilities	1,304	1,437
Estimated Fair Value \| Level 1
Assets
Mortgage loans	0	0
Policy loans	0	0
Other invested assets	0	0
Premiums, reinsurance and other receivables	0	0
Liabilities
Policyholder account balances	0	0
Long-term debt	0	0
Other liabilities	0	0
Separate account liabilities	0	0
Estimated Fair Value \| Level 2
Assets
Mortgage loans	0	0
Policy loans	477	470
Other invested assets	89	70
Premiums, reinsurance and other receivables	31	20
Liabilities
Policyholder account balances	0	0
Long-term debt	33	36
Other liabilities	269	60
Separate account liabilities	1,304	1,437
Estimated Fair Value \| Level 3
Assets
Mortgage loans	21,083	20,591
Policy loans	506	568
Other invested assets	15	15
Premiums, reinsurance and other receivables	3,519	3,583
Liabilities
Policyholder account balances	24,366	23,487
Long-term debt	903	1,087
Other liabilities	820	816
Separate account liabilities	$ 0	$ 0

Total amount of mortgage loans not valued on a recurring basis as of the balance sheet date.

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Fair value portion of other investments not otherwise specified in the taxonomy.

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Fair value portion of the liability of policyholders for deposits held under the terms of insurance contracts.

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Amount before allowance of loans made to policy and contract holders using their life insurance contracts' cash value or separate accounts as collateral. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums over and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Fair value portion of other liabilities.

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Fair value portion of receivables, including, but not limited to, trade account receivables, note receivables, and loan receivables.

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Amount of liability for variable contract in which all or portion of contract holder's funds is allocated to specific separate account and supported by assets held in separate account.

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