Comprehensive Income/(Loss) - Schedule of Changes in Each Component of Accumulated Other Comprehensive Items (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	$ 44,032
Ending Balance	45,346
Currency translation adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(2,880)
Other comprehensive income/(loss) before reclassifications	57
Amounts reclassified from accumulated other comprehensive income/(loss)	10
Other Comprehensive Income, Other, Net of Tax	67
Ending Balance	(2,813)
Unrealized losses on hedging instruments
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(33)
Other comprehensive income/(loss) before reclassifications	0
Amounts reclassified from accumulated other comprehensive income/(loss)	5
Other Comprehensive Income, Other, Net of Tax	5
Ending Balance	(28)
Pension and other postretirement benefit liability adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(186)
Other comprehensive income/(loss) before reclassifications	2
Amounts reclassified from accumulated other comprehensive income/(loss)	(2)
Other Comprehensive Income, Other, Net of Tax	0
Ending Balance	(186)
Accumulated Other Comprehensive Items
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance	(3,099)
Other comprehensive income/(loss) before reclassifications	59
Amounts reclassified from accumulated other comprehensive income/(loss)	13
Other Comprehensive Income, Other, Net of Tax	72
Ending Balance	$ (3,027)