Pension And Other Postretirement Benefits (Change In Plan Assets Of Pension And Other Postretirement Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Other Postretirement Benefits [Member]
Change in plan assets
Fair value at January 1	$ 371	$ 348
Actual return on plan assets	20	36
Company contribution	24	38
Benefits paid	(51)	(51)
Fair value at December 31	364	371
United States
Change in plan assets
Fair value at January 1	11,367
Fair value at December 31	11,244	11,367
United States | Pension Plans, Defined Benefit [Member]
Change in plan assets
Fair value at January 1	11,367	10,989
Actual return on plan assets	286	1,121
Company contribution	300	0
Benefits paid	(709)	(743)
Fair value at December 31	11,244	11,367
Pension Benefits - Non-U.S. [Member]
Change in plan assets
Fair value at January 1	18,431
Fair value at December 31	17,378	18,431
Pension Benefits - Non-U.S. [Member] | Pension Plans, Defined Benefit [Member]
Change in plan assets
Fair value at January 1	18,431	16,757
Actual return on plan assets	862	1,484
Foreign exchange rate changes	(1,051)	492
Company contribution	288	615
Benefits paid	(931)	(878)
Other	(221)	(39)
Fair value at December 31	$ 17,378	$ 18,431