Other Financial Information - Other Current Assets, Net (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Prepaid Expenses and Other Current Assets [Abstract]
Prepaid expenses	$ 411	$ 372
Income tax receivable	384	483
Materials, supplies and inventory	124	146
Contract assets	16	16
Assets held for sale	24	24
Other	17	22
Total other current assets, net	1,197	1,274
Acquisition Costs
Prepaid Expenses and Other Current Assets [Abstract]
Contract costs	104	102
Fulfillment Costs
Prepaid Expenses and Other Current Assets [Abstract]
Contract costs	$ 117	$ 109

Amount of assets held-for-sale that are not part of a disposal group, expected to be sold within a year or the normal operating cycle, if longer.

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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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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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The carrying amount of capitalized costs of materials, supplies, and other assets, which are not included in inventory but used in production.

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Amount of current assets classified as other.

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Amount of other miscellaneous assets expected to be realized or consumed within one year or operating cycle, if longer.

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Net amount of other deferred costs capitalized at the end of the reporting period. Does not include deferred finance costs or deferred acquisition costs of insurance companies.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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