Cash Flow Information (Cash Payments For Interest And Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Cash Flow Information [Abstract]
Income taxes paid	$ 13,293	$ 15,473	$ 15,364
Included in cash flows from operating activities	624	584	666
Capitalized, included in cash flows from investing activities	1,276	1,152	838
Total cash interest paid	$ 1,900	$ 1,736	$ 1,504