Supplemental financial information - Restructuring charges and other (Details) $ in Millions		12 Months Ended
		Dec. 31, 2025 USD ($) factory	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Disclosure Text Block Supplement [Abstract]
Restructuring charges	[1]	$ 85	$ 8	$ 0
Goodwill impairment		32	0	0
Gains on sales of assets		0	(132)	0
Restructuring charges/other		$ 117	$ (124)	$ 0
Number of factories closing | factory		2

[1] Includes severance, benefits and other exit costs related to efforts to drive operational efficiencies to support our long-term strategy, including the planned closures of our two remaining factories with 150mm production.