Intangibles - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
VOBA amortization	$ 128	$ 136
DAC amortization	135	69
DSI amortization	$ 15	$ 10