Investments (Net Investment Income - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net Investment Income [Line Items]
Debt and Equity Securities, Realized Gain (Loss)	$ (222)	$ 348	$ (769)	$ 1,000
Equity Securities, FV-NI, Unrealized Gain (Loss)	(26)	(6)	(88)	158
Income (Loss) from Equity Method Investments	(135)	1,700	1,300	4,000
Net investment income
Net Investment Income [Line Items]
Debt and Equity Securities, Gain (Loss)	(373)	137	(1,700)	811
Debt and Equity Securities, Realized Gain (Loss)	30	146	139	407
Debt and Equity Securities, Unrealized Gain (Loss)	(403)	(9)	(1,800)	404
Unit-linked investments
Net Investment Income [Line Items]
Equity Securities, FV-NI, Unrealized Gain (Loss)	$ (304)	$ 55	$ (1,500)	$ 577