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Hedging Activities and Fair Value Measurements - Balance Sheet Location (Details) € in Millions, $ in Millions	Jun. 30, 2026 EUR (€)	Jun. 30, 2026 USD ($)	Dec. 31, 2025 EUR (€)	Dec. 31, 2025 USD ($)
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset		$ 255		$ 181
Derivative Liability, Fair Value, Gross Liability		1,198		1,308
December 2027 Notes
Derivatives, Fair Value [Line Items]
Long-term Debt	€ 900	1,026	€ 900	1,058
Designated Hedging Instruments
Derivatives, Fair Value [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value		209		156
Derivative Instruments in Hedges, Liabilities, at Fair Value		1,159		1,266
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Derivatives, Fair Value [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value		1,023		1,055
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Derivatives, Fair Value [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value		62		109
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Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Liability, at Fair Value		39		42
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Derivatives, Fair Value [Line Items]
Derivative Instruments in Hedges, Liabilities, at Fair Value		74		102
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Derivatives, Fair Value [Line Items]
Derivative Instruments in Hedges, Assets, at Fair Value		100		99
Location, Statement of Financial Position, Balance [Axis]: us-gaap:PrepaidExpenseAndOtherAssetsCurrent \| Forward currency contracts \| Non-Designated Hedging Instruments
Derivatives, Fair Value [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value		$ 46		$ 25