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Derivative instruments - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Derivative Instruments Gain Loss [Line Items]
Length of time hedged in foreign currency contracts	3 years
5.25% 2033 Notes \| Notes
Derivative Instruments Gain Loss [Line Items]
Interest rate, stated percentage	5.25%
3.125% Notes Due In 2025 \| Notes
Derivative Instruments Gain Loss [Line Items]
Interest rate, stated percentage	3.125%
Forward Contracts \| Derivatives designated as hedging instruments:
Derivative Instruments Gain Loss [Line Items]
Notional amounts	$ 7,800	$ 7,200
Forward Contracts \| Derivatives not designated as hedging instruments:
Derivative Instruments Gain Loss [Line Items]
Notional amounts	240	148
Interest rate swap contracts
Derivative Instruments Gain Loss [Line Items]
Notional amounts	500
Interest rate swap contracts \| 5.25% 2033 Notes
Derivative Instruments Gain Loss [Line Items]
Notional amounts	1,000
Interest rate swap contracts \| 3.125% Notes Due In 2025
Derivative Instruments Gain Loss [Line Items]
Notional amounts	1,000
Interest rate swap contracts \| Derivatives designated as hedging instruments:
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	$ (120)