Accumulated Other Comprehensive Income (Loss) - Schedule of Components of Accumulated Other Comprehensive Loss in the Equity Section of the Balance Sheet (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ (5,673)
Other comprehensive income (loss)	$ 116	$ (36)	(172)	$ 39
Ending balance	(5,845)		(5,845)
Defined Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(393)
Other comprehensive income (loss)			14
Ending balance	(379)		(379)
Unrealized Holding Gain/(Loss) on Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			2
Other comprehensive income (loss)			10
Ending balance	12		12
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			(5,344)
Other comprehensive income (loss)			(156)
Ending balance	(5,500)		(5,500)
Unrealized Gain/(Loss) on Hedging Activities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			62
Other comprehensive income (loss)			(40)
Ending balance	$ 22		$ 22