Supplemental financial information - Restructuring Charges, Other (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disclosure Text Block Supplement [Abstract]
Restructuring charges/other	$ 0	$ 0	$ (124)	$ 0