Derivatives - Derivative Instruments, Gains & Losses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Currency exchange contracts | Other Expense | Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	$ (16)	$ (29)	$ 102
Currency exchange contracts | Included in cost of product revenues | Derivatives not designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	21	1	6
Fair value hedging relationships | Cross-currency interest rate swaps | Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	0	0	(81)
Fair value hedging relationships | Cross-currency interest rate swaps | Other Expense | Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Hedged long-term obligations - included in other income/(expense)	0	0	77
Derivatives designated as cash flow hedges | Interest Rate Swap | Other Expense | Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from accumulated other comprehensive items to interest expense	0	(3)	(3)
Derivatives designated as cash flow hedges | Interest Rate Swap | Amount reclassified from accumulated other comprehensive items to interest expense | Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Amount reclassified from accumulated other comprehensive items to interest expense	(3)	(4)	0
Financial instruments designated as net investment hedges | Cross-currency interest rate swaps | Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative	267	120	19
Included in currency translation adjustment within other comprehensive income/(loss)	682	(222)	52
Financial instruments designated as net investment hedges | Foreign currency-denominated debt and other payables | Derivatives designated as hedging instruments
Derivative Instruments, Gain (Loss) [Line Items]
Included in currency translation adjustment within other comprehensive income/(loss)	$ 686	$ (356)	$ 695