Retirement Benefits (Schedule Of Defined Benefit Plan Net Periodic Benefit Cost Combined U.S. and Significant Non-U.S. Plans) (Details) - Pension Benefits - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 7	$ 10	$ 15	$ 20
Interest cost	99	86	199	171
Expected return on plan assets	(197)	(211)	(399)	(419)
Recognized actuarial loss	37	51	76	103
Net periodic credit	(54)	(64)	(109)	(125)
Settlement loss	2	2	2	2
Total credit	(52)	(62)	(107)	(123)
United States
Defined Benefit Plan Disclosure [Line Items]
Interest cost	49	46	97	92
Expected return on plan assets	(84)	(81)	(168)	(163)
Recognized actuarial loss	18	22	37	45
Net periodic credit	(17)	(13)	(34)	(26)
Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	10	15	20
Interest cost	50	40	102	79
Expected return on plan assets	(113)	(130)	(231)	(256)
Recognized actuarial loss	19	29	39	58
Net periodic credit	(37)	(51)	(75)	(99)
Settlement loss	2	2	2	2
Total credit	$ (35)	$ (49)	$ (73)	$ (97)