Segment information - Information about geographic areas (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information
Total sales and revenues	$ 64,809	$ 67,060	$ 59,427
Property, plant and equipment - net	13,361	12,680
Inside United States
Segment Reporting Information
Total sales and revenues	30,624	31,053	24,368
Property, plant and equipment - net	8,213	7,658
Outside United States
Segment Reporting Information
Total sales and revenues	34,185	36,007	$ 35,059
Property, plant and equipment - net	$ 5,148	$ 5,022