Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Operating Loss Carryforwards [Line Items]
Effective tax rates on income from continuing operations (as a percent)	25.90%	36.30%	24.60%	21.30%
U.S. federal income tax at statutory rate (as a percent)	21.00%	21.00%	21.00%	21.00%
Valuation allowance related to certain tax attribute carryforward	$ 300		$ 300
Gross unrecognized tax benefits, beginning of year	1,400		1,400		$ 1,400
Unrecognized tax benefits, if recognized would favorably affect the effective tax rate	1,400		1,400		1,400
Unrecognized tax benefits, interest and penalties accrued	53		53		$ 52
Unrecognized tax benefits, interest net of the federal (benefit) expense and penalties			1	$ (5)
Foreign
Operating Loss Carryforwards [Line Items]
Deferred tax asset, increase (decrease) in valuation allowance recognized			(15)
U.S. And Non-U.S. Life Insurance Companies, Available-for-Sale Portfolio
Operating Loss Carryforwards [Line Items]
Valuation allowance	369		369
Non U.S.. Life Insurance Companies, Available-for-Sale Portfolio
Operating Loss Carryforwards [Line Items]
Deferred tax asset, increase (decrease) in valuation allowance recognized	$ (204)		$ (181)