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Value of Business Acquired, Deferred Acquisition Costs and Deferred Sales Inducements - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
VOBA amortization including actuarial model updates and refinements	$ 135
VOBA amortization	120	$ 128
DAC amortization	200	135
Indexed annuities
Goodwill and Intangible Assets Disclosure [Abstract]
VOBA amortization	101	106
DAC amortization	112	75
Finite-Lived Intangible Assets [Line Items]
DSI amortization	$ 27	$ 15

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Present Value of Future Insurance Profits, Amortization Expense, Including Experience Adjustment Amortization Expense

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Amount of amortization expense (reversal of expense) for deferred policy acquisition costs.

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Amount of amortization expense (reversal of expense) for present value of future profits of insurance contract acquired in business combination.

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