Accumulated other comprehensive loss - Reclassification out of accumulated other comprehensive income (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax benefit	$ (19)	$ (14)
Other nonoperating income, net	161	0
Total	116	(28)
Reclassifications from Accumulated other comprehensive loss to income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total	23	7
Reclassifications from Accumulated other comprehensive loss to income | Cash flow hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of product revenues	30	14
Income tax benefit	(4)	(4)
Total	26	10
Reclassifications from Accumulated other comprehensive loss to income | Pension and other postretirement plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax benefit	1	0
Other nonoperating income, net	(4)	(3)
Total	$ (3)	$ (3)