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Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of cash or securities placed with a broker or counterparty as security for a trading or derivatives securities position which was partially obtained with funds provided by the broker dealer.

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Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from discontinuance of cash flow hedge included in assessment of hedge effectiveness.

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The carrying value as of the balance sheet date of the assets received as collateral against securities loaned to other broker-dealers. Borrowers of securities generally are required to provide collateral to the lenders of securities, commonly cash but sometimes other securities or standby letters of credit, with a value slightly higher than that of the securities borrowed. In instances where the entity is permitted to sell or re-pledge these securities, the entity reports the fair value of the collateral received and the related obligation to return the collateral as a liability.

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Derivatives - Narrative (Details) - USD ($)	6 Months Ended		12 Months Ended
Derivatives - Narrative (Details) - USD ($)	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2022	Dec. 31, 2020
Derivative [Line Items]
Notional amount	$ 35,067,000,000		$ 32,802,000,000
Invested assets supporting Modco	775,000,000		645,000,000
Loss reclassification from ACOI, estimated net amount to be transferred			8,000,000
Reclassifications from AOCI to earnings resulting from the discontinuance of cash-flow hedges	0	$ 0	0	$ 0
Derivative, fair value	(777,000,000)		858,000,000
Margin deposit assets	4,000,000		15,000,000
Derivative asset, collateral, obligation to return cash, offset	172,000,000		187,000,000
Securities received as collateral	30,000,000		262,000,000
Asset Pledged as Collateral \| Cash Deposits
Derivative [Line Items]
Derivative, fair value	2,000,000		5,000,000
Asset Pledged as Collateral \| Securities
Derivative [Line Items]
Derivative, fair value	270,000,000		106,000,000
Fair value securities
Derivative [Line Items]
Securities received as collateral	5,000,000		79,000,000
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	34,967,000,000		32,552,000,000
Derivative, fair value	(777,000,000)		858,000,000
Interest rate swaps \| Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	$ 506,000,000		$ 276,000,000