Supplemental financial information - Other income (expense), net (OI&E) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure Text Block Supplement [Abstract]
Other income	[1]	$ 483	$ 169	$ 145
Other expense	[2]	(43)	(63)	(2)
Total		$ 440	$ 106	$ 143

[1] Other income includes interest, royalty and lease income, as well as investment gains and losses.

[2] Other expense includes a portion of pension and other retiree benefit costs, lease expense, tax interest, currency gains and losses and miscellaneous items.