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Separate Account Assets and Liabilities - Separate Account Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Separate Account Asset
Separate account assets	$ 78,114	$ 77,457
Gain (loss) recognized on assets transferred to separate account	0	0	$ 0
Mutual funds
Fair Value, Separate Account Asset
Separate account assets	75,576	74,634
Property/real estate
Fair Value, Separate Account Asset
Separate account assets	1,682	1,784
Equity securities
Fair Value, Separate Account Asset
Separate account assets	514	553
Debt securities
Fair Value, Separate Account Asset
Separate account assets	175	285
Cash and cash equivalents
Fair Value, Separate Account Asset
Separate account assets	120	147
Other
Fair Value, Separate Account Asset
Separate account assets	$ 47	$ 54

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Amount of net gains or losses recognized during the reporting period on assets that were transferred into separate accounts.

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