Segment Information (Reconciliation Of Reportable Segments Operating Revenues To Total Revenues Reported 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]
Reportable segments operating revenues	$ 39,625	$ 35,548	$ 115,993	$ 100,925
Net investment income	371	335	1,112	1,026
Net (losses) gains on financial instruments	(57)	(61)	(439)	107
Total revenues	$ 39,939	$ 35,822	$ 116,666	$ 102,058