Investments (Net Investment Income - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net Investment Income [Line Items]
Debt and Equity Securities, Realized Gain (Loss)	$ (405)	$ 528	$ (547)	$ 698
Equity Securities, FV-NI, Unrealized Gain (Loss)	(42)	57	(62)	164
Income (Loss) from Equity Method Investments	386	1,000	1,500	2,300
Net investment income
Net Investment Income [Line Items]
Debt and Equity Securities, Gain (Loss)	(777)	413	(1,300)	674
Debt and Equity Securities, Realized Gain (Loss)	40	94	109	261
Debt and Equity Securities, Unrealized Gain (Loss)	(817)	319	(1,400)	413
Unit-linked investments
Net Investment Income [Line Items]
Equity Securities, FV-NI, Unrealized Gain (Loss)	$ (802)	$ 347	$ (1,300)	$ 549