Variable Life and Annuity Contracts - Rollforward of GMDB (Details) - GMDB - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Separate Account Investment [Line Items]
Balance, beginning of year	$ 445	$ 421	$ 407
Reserve increase (decrease)	156	72	41
Benefits paid	(69)	(35)	(43)
Changes in reserves related to unrealized appreciation (depreciation) of investments	(82)	(13)	16
Balance, end of year	$ 450	$ 445	$ 421

Amount of increase (decrease) in the liability for guaranteed minimum benefits on long-duration contracts.

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Amount of expected guaranteed benefits in excess of the projected account balances for minimum guaranteed benefit contracts, as of the balance sheet date.

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Amount of cash outflow to policyholders and contract holders for guaranteed minimum benefit payments.

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