Derivative instruments - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2025	Dec. 31, 2024
Derivative [Line Items]
Length of time hedged in foreign currency contracts	3 years
3.125% Notes Due In 2025 \| Notes
Derivative [Line Items]
Interest rate, stated percentage	3.125%
5.25% Notes Due In 2033 \| Notes
Derivative [Line Items]
Interest rate, stated percentage	5.25%
Foreign currency forward contracts \| Designated as Hedging Instrument
Derivative [Line Items]
Notional amounts	$ 7,700	$ 7,200
Foreign currency forward contracts \| Derivatives not designated as hedging instrument
Derivative [Line Items]
Notional amounts	245	148
Interest Rate Swap
Derivative [Line Items]
Notional amounts	$ 550
Derivative, basis spread on variable rate	1.70%
Interest Rate Swap \| Designated as Hedging Instrument
Derivative [Line Items]
Notional amounts	$ 6,200	$ 6,700

Contractual interest rate for funds borrowed, under the debt agreement.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

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- Definition

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.

+ References

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