Value of Business Acquired ("VOBA"), Deferred Acquisition Costs ("DAC"), and Deferred Sales Inducements ("DSI") - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]
VOBA amortization	$ 35	$ 38
VOBA including amortization		38
DAC amortization	98	82
DSI amortization	$ 20	$ 14

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

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