Goodwill and Intangible Assets - Schedule of Intangible Assets, Net (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|---|
| Intangible Asset, Finite-Lived [Line Items] | |||
| Gross Carrying Amount | $ 13,454 | $ 13,448 | |
| Accumulated Amortization | 9,344 | 8,985 | |
| Net Carrying Amount | 4,110 | 4,463 | |
| Customer relationships | |||
| Intangible Asset, Finite-Lived [Line Items] | |||
| Gross Carrying Amount | 7,638 | 7,547 | |
| Accumulated Amortization | 5,391 | 4,945 | |
| Net Carrying Amount | 2,247 | 2,602 | |
| Capitalized software | |||
| Intangible Asset, Finite-Lived [Line Items] | |||
| Gross Carrying Amount | 5,657 | 5,743 | |
| Accumulated Amortization | 3,843 | 3,940 | |
| Net Carrying Amount | 1,814 | 1,803 | |
| Patents and other | |||
| Intangible Asset, Finite-Lived [Line Items] | |||
| Gross Carrying Amount | 159 | 158 | |
| Accumulated Amortization | 110 | 100 | |
| Net Carrying Amount | $ 49 | $ 58 | |
| Fully amortized and retired capitalized software | |||
| Intangible Asset, Finite-Lived [Line Items] | |||
| Gross Carrying Amount | $ 259 |
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- Definition Amount of 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, before 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 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/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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