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Supplementary Information for Certain Balance Sheet Accounts - Other Non-current Assets (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Prepayments and accrued income | $ 19 | $ 17
Deferred contract costs | 163 | 155
Deferred compensation plan assets | 118 | 111
Deferred tax assets | 234 | 238
Accounts receivable, net | 37 | 18
Investment in associates | 100 | 84
Other investments | 87 | 73
Held-to-maturity securities | 45 | 0
Insurance recovery receivables | 84 | 76
Other non-current assets | 55 | 34
Total other non-current assets | $ 942 | $ 806

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