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Derivative Instruments - Forward Currency Exchange Contracts (Details) - Foreign Exchange Contract $ in Millions, € in Billions	6 Months Ended	12 Months Ended
	Jun. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)	Jun. 30, 2026 EUR (€)	Dec. 31, 2025 EUR (€)
Derivative [Line Items]
Derivative, notional amount	$ 7,759	$ 8,776
Foreign Currency Derivative, Maximum Remaining Maturity Period	8 years 2 months 12 days	8 years 8 months 12 days
Total fair value	$ (26)	$ (124)
Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent
Derivative [Line Items]
Derivative assets	12	2
Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent
Derivative [Line Items]
Derivative liabilities	(76)	(102)
Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesNoncurrent
Derivative [Line Items]
Derivative liabilities	(31)	(68)
Balance Sheet Location [Axis]: us-gaap:PrepaidExpenseCurrent
Derivative [Line Items]
Derivative assets	69	44
Non-Designated
Derivative [Line Items]
Derivative, notional amount	3,268	4,391
Total fair value	32	(10)
Non-Designated \| Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent
Derivative [Line Items]
Derivative assets	0	0
Non-Designated \| Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent
Derivative [Line Items]
Derivative liabilities	(9)	(21)
Non-Designated \| Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesNoncurrent
Derivative [Line Items]
Derivative liabilities	0	0
Non-Designated \| Balance Sheet Location [Axis]: us-gaap:PrepaidExpenseCurrent
Derivative [Line Items]
Derivative assets	41	11
Cash Flow \| Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	1,925	1,738
Total fair value	0	23
Cash Flow \| Designated as Hedging Instrument \| Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent
Derivative [Line Items]
Derivative assets	3	2
Cash Flow \| Designated as Hedging Instrument \| Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent
Derivative [Line Items]
Derivative liabilities	(28)	(10)
Cash Flow \| Designated as Hedging Instrument \| Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesNoncurrent
Derivative [Line Items]
Derivative liabilities	(3)	(2)
Cash Flow \| Designated as Hedging Instrument \| Balance Sheet Location [Axis]: us-gaap:PrepaidExpenseCurrent
Derivative [Line Items]
Derivative assets	28	33
Net Investment \| Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	2,566	2,647	€ 2.3	€ 2.3
Total fair value	(58)	(137)
Net Investment \| Designated as Hedging Instrument \| Balance Sheet Location [Axis]: us-gaap:OtherAssetsNoncurrent
Derivative [Line Items]
Derivative assets	9	0
Net Investment \| Designated as Hedging Instrument \| Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesCurrent
Derivative [Line Items]
Derivative liabilities	(39)	(71)
Net Investment \| Designated as Hedging Instrument \| Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesNoncurrent
Derivative [Line Items]
Derivative liabilities	(28)	(66)
Net Investment \| Designated as Hedging Instrument \| Balance Sheet Location [Axis]: us-gaap:PrepaidExpenseCurrent
Derivative [Line Items]
Derivative assets	$ 0	$ 0