Investments - Available-For-Sale Impairment Losses Recognized in Earnings (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Available-For-Sale Impairment Losses [Abstract]
Impairment losses (gains) recognized in earnings	$ 25	$ 11	$ 55	$ 16
Gain (loss) on mortgage loans due to changes in expected credit losses	8	0	8	0
Corporate and other bonds
Available-For-Sale Impairment Losses [Abstract]
Impairment losses (gains) recognized in earnings	24		53	5
Asset-backed
Available-For-Sale Impairment Losses [Abstract]
Impairment losses (gains) recognized in earnings	$ 1	$ 11	$ 2	$ 11