Revenue - Change in Contract Assets and Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Contract Assets
Balance at January 1,	$ 335	$ 290
Additions	825	661
Transfers to accounts receivable	(805)	(614)
Effect of foreign exchange rate changes	2	(2)
Balance at December 31,	357	335
Contract Liabilities
Balance at January 1,	837	776
Cash received for performance obligations not yet fulfilled	822	726
Revenue recognized	(799)	(640)
Effect of foreign exchange rate changes	9	(25)
Balance at December 31,	$ 869	$ 837