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The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Maximum period of hedging exposure to variability in future cash flows for forecasted transaction of foreign currency cash flow hedge, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transaction for payment of variable interest on existing financial instrument.

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Derivative instruments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments Gain Loss [Line Items]
Length of time hedged in foreign currency contracts	3 years
3.625% notes due 2024 (3.625% 2024 Notes) \| Notes
Derivative Instruments Gain Loss [Line Items]
Interest rate, stated percentage	3.625%
5.25% 2033 Notes \| Notes
Derivative Instruments Gain Loss [Line Items]
Interest rate, stated percentage	5.25%
Forward Contracts [Member] \| Designated as Hedging Instrument
Derivative Instruments Gain Loss [Line Items]
Notional amounts	$ 7,200	$ 6,600	$ 6,000
Forward Contracts [Member] \| Derivatives not designated as hedging instruments
Derivative Instruments Gain Loss [Line Items]
Notional amounts	148	457	$ 517
Interest rate swap contracts \| 3.625% notes due 2024 (3.625% 2024 Notes)
Derivative Instruments Gain Loss [Line Items]
Notional amounts	1,400
Interest rate swap contracts \| 5.25% 2033 Notes
Derivative Instruments Gain Loss [Line Items]
Notional amounts	$ 1,400
Interest rates	1.80%
Interest rate swap contracts \| Designated as Hedging Instrument
Derivative Instruments Gain Loss [Line Items]
Notional amounts	$ 6,700	$ 6,700
Foreign Currency and Cross Currency Swaps
Derivative Instruments Gain Loss [Line Items]
Foreign currency cash flow hedge gain (loss) to be reclassified	$ 170