Segment Information (Reconciliation Of Reportable Segment Operating Gain To Income Before Income Taxes In The Consolidated Statements Of Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Reportable segments operating gain	$ 7,489	$ 6,360	$ 5,999
Net investment income	1,378	877	1,005
Net gains on financial instruments	318	182	67
Interest expense	(798)	(784)	(746)
Amortization of other intangible assets	(441)	(361)	(338)
(Loss) gain on extinguishment of debt	(21)	(36)	(2)
Income before income tax expense	$ 7,925	$ 6,238	$ 5,985