Fair Value (Financial Instruments Carried at Other Than Fair Value) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Assets
Policy loans	$ 8,788	$ 8,874
Liabilities
Collateral financing arrangement	637	716
Junior subordinated debt securities	3,161	3,158
Separate account liabilities	144,634	146,038
Carrying Value
Assets
Mortgage loans (1)	92,506	83,763
Policy loans	8,788	8,874
Other invested assets	919	946
Premiums, reinsurance and other receivables	5,182	2,905
Other assets	268	267
Liabilities
Policyholder account balances	138,233	133,788
Long-term debt	15,516	14,591
Collateral financing arrangement	637	716
Junior subordinated debt securities	3,161	3,158
Other liabilities	10,556	2,908
Separate account liabilities	75,705	81,976
Estimated Fair Value
Assets
Mortgage loans (1)	87,753	78,694
Policy loans	9,516	9,682
Other invested assets	919	946
Premiums, reinsurance and other receivables	5,191	2,963
Other assets	266	265
Liabilities
Policyholder account balances	134,025	127,514
Long-term debt	15,621	14,241
Collateral financing arrangement	551	591
Junior subordinated debt securities	3,552	3,502
Other liabilities	10,260	3,170
Separate account liabilities	75,705	81,976
Estimated Fair Value \| Level 1
Assets
Mortgage loans (1)	0	0
Policy loans	0	0
Other invested assets	0	0
Premiums, reinsurance and other receivables	0	0
Other assets	0	0
Liabilities
Policyholder account balances	0	0
Long-term debt	0	0
Collateral financing arrangement	0	0
Junior subordinated debt securities	0	0
Other liabilities	0	0
Separate account liabilities	0	0
Estimated Fair Value \| Level 2
Assets
Mortgage loans (1)	0	0
Policy loans	0	0
Other invested assets	714	729
Premiums, reinsurance and other receivables	791	1,042
Other assets	82	90
Liabilities
Policyholder account balances	0	0
Long-term debt	15,621	14,241
Collateral financing arrangement	0	0
Junior subordinated debt securities	3,552	3,502
Other liabilities	609	1,377
Separate account liabilities	75,705	81,976
Estimated Fair Value \| Level 3
Assets
Mortgage loans (1)	87,753	78,694
Policy loans	9,516	9,682
Other invested assets	205	217
Premiums, reinsurance and other receivables	4,400	1,921
Other assets	184	175
Liabilities
Policyholder account balances	134,025	127,514
Long-term debt	0	0
Collateral financing arrangement	551	591
Junior subordinated debt securities	0	0
Other liabilities	9,651	1,793
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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Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.

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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 assets.

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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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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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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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