Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Operating Loss Carryforwards [Line Items]
U.S. federal income tax at statutory rate (as a percent)	21.00%	21.00%
Effective tax rates on income from continuing operations (as a percent)	27.30%	24.70%
Valuation allowance related to certain tax attribute carryforward	$ 300
Deferred tax asset, increase (decrease) in valuation allowance recognized	(2)
Gross unrecognized tax benefits, beginning of year	1,400		$ 1,400
Unrecognized tax benefits, if recognized would favorably affect the effective tax rate	1,400		1,400
Unrecognized tax benefits, interest and penalties accrued	41		$ 53
Accrued expense (benefit) for the payment of interest and penalties	(12)	$ 0
U.S. And Non-U.S. Life Insurance Companies, Available-for-Sale Portfolio
Operating Loss Carryforwards [Line Items]
Valuation allowance	394
Non U.S.. Life Insurance Companies, Available-for-Sale Portfolio
Operating Loss Carryforwards [Line Items]
Deferred tax asset, increase (decrease) in valuation allowance recognized	$ (115)