Supplemental financial information - Restructuring charges and other (Details) - USD ($) $ in Millions		1 Months Ended	12 Months Ended
		Oct. 31, 2021	Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Disclosure Text Block Supplement [Abstract]
Integration charges	[1]		$ 0		$ 257		$ 104
Gains on sales of assets		$ (50)	0	[2]	0	[2]	(50)	[2]
Restructuring charges/other			$ 0		$ 257		$ 54

[1] Includes costs related to our purchase of the Lehi, Utah, manufacturing facility, as well as preproduction costs before December 2022.

[2] Includes a $50 million gain from the sale of property in October 2021.