Accounts receivable, net - Movement in credit loss allowance (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
At January 1	$ 149	$ 125
Charge-offs	(2)	(4)
Provision for credit losses	4	10
Foreign currency translation and other	(1)	3
At March 31	$ 150	$ 134