Fair Value (Financial Instruments Carried at Other Than Fair Value) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets
Policy loans	$ 869	$ 884
Liabilities
Separate account liabilities	106,225	103,986
Carrying Value
Assets
Mortgage loans	19,787	15,722
Policy loans	869	884
Other invested assets	85	54
Premiums, reinsurance and other receivables	3,075	3,114
Liabilities
Policyholder account balances	23,507	17,361
Long-term debt	841	843
Other liabilities	886	891
Separate account liabilities	1,437	1,331
Estimated Fair Value
Assets
Mortgage loans	20,591	16,836
Policy loans	1,038	1,356
Other invested assets	85	54
Premiums, reinsurance and other receivables	3,603	3,898
Liabilities
Policyholder account balances	23,487	18,962
Long-term debt	1,123	1,070
Other liabilities	876	908
Separate account liabilities	1,437	1,331
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	470	475
Other invested assets	70	39
Premiums, reinsurance and other receivables	20	90
Liabilities
Policyholder account balances	0	0
Long-term debt	36	39
Other liabilities	60	121
Separate account liabilities	1,437	1,331
Estimated Fair Value \| Level 3
Assets
Mortgage loans	20,591	16,836
Policy loans	568	881
Other invested assets	15	15
Premiums, reinsurance and other receivables	3,583	3,808
Liabilities
Policyholder account balances	23,487	18,962
Long-term debt	1,087	1,031
Other liabilities	816	787
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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