CLOSED BLOCK - Summarized Financial Information for Closed Block (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Closed Block Liabilities:
Future policy benefits, policyholders’ account balances and other	$ 5,390		$ 5,461
Other liabilities	69		57
Total Closed Block liabilities	5,459		5,518
Assets Designated to the Closed Block:
Fixed maturities AFS, at fair value (amortized cost of $2,949 and $2,945) (allowance for credit losses of $0 and $0)	2,784		2,800
Mortgage loans on real estate (net of allowance for credit losses of $13 and $13)	1,550		1,612
Policy loans	541		554
Cash and other invested assets	63		58
Other assets	163		150
Total assets designated to the Closed Block	5,101		5,174
Excess of Closed Block liabilities over assets designated to the Closed Block	358		344
Amounts included in AOCI:
Net unrealized investment gains (losses), net of policyholders’ dividend obligation: $0 and $0; and net of income tax: $35 and $31	(130)		(115)
Maximum future earnings to be recognized from Closed Block assets and liabilities	228		$ 229
Amortized cost of fixed maturities AFS	2,949	$ 2,945
Allowance for credit losses of fixed maturities AFS	0	0
Allowance for credit losses of mortgage loans on real estate	13	13
Policy holders' dividend obligations on net unrealized investment gains (losses)	0	0
Income tax on net unrealized investment gains (losses)	$ 35	$ 31

Assets Designated To Closed Block, Mortgage Loans On Real Estate, Credit Losses

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Closed Block Investments, Debt Securities, Available-For-Sale, Allowance For Credit Loss

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The amount of deferred income tax expense or benefit allocated to the operations of the closed block for the period.

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Net increase or decrease in the period in the fair market value of investments that were allocated to the closed block net of deferred income tax (expense) benefit and policyholder dividend obligation.

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Unrealized Investment Gains (Losses), Policyholders’ Dividend Obligation

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The sum of cash, cash equivalents, investments and other assets allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block.

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Cash and highly liquid, safe investments that can be readily converted into cash (cash equivalents) allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block.

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Fair value of investments in debt securities that are deemed to be available for sale that are allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block. Change in fair of such securities is a component of change in other comprehensive income in the period, which is reflected in the closed block disclosure.

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Carrying amount of investments in mortgage loans on real estate allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block.

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Amount of other assets held by the closed block. Excludes other investments.

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Carrying amount of loans to policy holders secured by benefits under insurance policies that are allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block.

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The carrying amount of closed block liabilities in excess of the carrying amount of closed block assets at the date of demutualization (adjusted to eliminate the impact of related amounts in accumulated other comprehensive income).

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The amortized cost as of the balance sheet date of those fixed maturity investments designated as available for sale and reported at fair value which are allocated to the closed block. Also a component of change in other comprehensive income in the period, which is reflected in the closed block disclosure.

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For the segregated group of participating or dividend-paying policies and contracts along with the assets backing them (known as a closed block), the total of future policy benefits, policyholder account balance, policyholder dividend obligation and any other closed block liabilities.

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The liability as of the balance sheet date for future benefits to be paid to or on behalf of policyholders and expenses, less the present value of future net premiums payable under the insurance contracts and the policy cash accumulations, for the segregated group of participating or dividend-paying policies and contracts identified as a closed block.

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Amount of liabilities allocated to the closed block, classified as other.

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The difference between the liabilities of and the assets allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block.

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