Goodwill and Acquired Intangible Assets (Narrative) (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| Indefinite-lived Intangible Assets [Line Items] | |||||
| Goodwill, impairment loss | $ 0 | $ 0 | $ 0 | $ 0 | |
| Finite-lived intangible assets, net | 5,005,000,000 | 5,005,000,000 | $ 5,272,000,000 | ||
| Customer Relationships | |||||
| Indefinite-lived Intangible Assets [Line Items] | |||||
| Finite-lived intangible assets, net | 4,117,000,000 | 4,117,000,000 | 4,279,000,000 | ||
| Foreign currency translation adjustment | |||||
| Indefinite-lived Intangible Assets [Line Items] | |||||
| Finite-lived intangible assets, net | (46,000,000) | (46,000,000) | $ (50,000,000) | ||
| Gain (loss) foreign currency translation adjustment | $ (46,000,000) | ||||
| Customer Relationships And Licenses | |||||
| Indefinite-lived Intangible Assets [Line Items] | |||||
| Intangible asset, impairment loss | $ 20,000,000 | ||||
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of impairment loss for finite- and indefinite-lived intangible assets and capitalized cost for software to be sold, leased, or marketed. Excludes goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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