Segment Information (Reconciliation Of Income Before Income Tax Expense To Reportable Segments Operating Gain Included In The Consolidated Statements Of Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting [Abstract]
Income before income tax expense	$ 2,146	$ 1,996	$ 6,615	$ 6,525
Net investment income	(371)	(335)	(1,112)	(1,026)
Net losses (gains) on financial instruments	57	61	439	(107)
Interest expense	213	201	622	598
Amortization of other intangible assets	225	136	520	306
Loss on extinguishment of debt	0	0	0	5
Reportable segments operating gain	$ 2,270	$ 2,059	$ 7,084	$ 6,301