Supplementary Information for Certain Balance Sheet Accounts - Prepaid and Other Current Assets (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Prepayments and accrued income	$ 116	$ 128
Deferred contract costs	89	88
Derivatives and investments	19	28
Deferred compensation plan assets	23	21
Corporate income and other taxes	329	241
Held-to-maturity securities	0	8
Available-for-sale securities	34	25
Other current assets	59	56
Total prepaid and other current assets	$ 669	$ 595

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as current.

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-Topic 340
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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity), classified as current.

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Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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Amount of investment in marketable security, classified as current.

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Amount of current assets classified as other.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Deferred compensation plan assets current.

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Derivatives and investments current.

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Prepaid expense and accrue revenue receivable current.

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