Derivatives and Hedging - Summary of the Impact of Changes in Fair Values of Derivatives (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Derivatives and Hedging
Amount of gain/(loss) recognized in statements of operations	$ (24)	$ (20)	$ 114	$ (8)
Derivatives designated as hedging instruments
Derivatives and Hedging
Amount of gain/(loss) recognized in other comprehensive income (loss)	$ (2)	$ (2)	$ (7)	$ (6)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Nonoperating	Interest Expense, Nonoperating	Interest Expense, Nonoperating	Interest Expense, Nonoperating
Amount of gain/(loss) recognized in statements of operations	$ 2	$ 2	$ 7	$ 6
Derivatives designated as hedging instruments \| Interest rate swaps
Derivatives and Hedging
Amount of gain/(loss) recognized in other comprehensive income (loss)	0	(10)	(22)	(5)
Amount of gain/(loss) recognized in statements of operations	0	0	0	0
Derivatives designated as hedging instruments \| Cross currency interest rate swaps
Derivatives and Hedging
Amount of gain/(loss) recognized in other comprehensive income (loss)	2	(12)	(31)	(12)
Amount of gain/(loss) recognized in statements of operations	0	0	0	0
Derivatives not designated as hedging instruments \| Earnout shares
Derivatives and Hedging
Amount of gain/(loss) recognized in other comprehensive income (loss)	$ 0	$ 0	$ 0	$ 0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Fair value movement on earnout derivative liabilities	Fair value movement on earnout derivative liabilities	Fair value movement on earnout derivative liabilities	Fair value movement on earnout derivative liabilities
Amount of gain/(loss) recognized in statements of operations	$ (26)	$ (22)	$ 80	$ (14)
Derivatives not designated as hedging instruments \| Foreign currency forward contracts
Derivatives and Hedging
Amount of gain/(loss) recognized in other comprehensive income (loss)	$ 0	$ 0	$ 0	$ 0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Nonoperating	Interest Expense, Nonoperating	Interest Expense, Nonoperating	Interest Expense, Nonoperating
Amount of gain/(loss) recognized in statements of operations	$ 0	$ 0	$ 27	$ 0

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-SubTopic 10
-Topic 825
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482881/825-10-55-10

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Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative.

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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
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
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-Name Accounting Standards Codification
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-Paragraph 5
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-Publisher FASB
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Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-9

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
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-Name Accounting Standards Codification
-Section 45
-Paragraph 10A
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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