Goodwill and Other Intangibles (Amortized Intangible Assets) (Details) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross Cost | $ 7,653 | $ 7,567 |
| Accumulated Amortization | 3,149 | 2,821 |
| Net Carrying Amount | 4,504 | 4,746 |
| Client relationships | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross Cost | 7,184 | 7,091 |
| Accumulated Amortization | 2,726 | 2,422 |
| Net Carrying Amount | 4,458 | 4,669 |
| Other | ||
| Intangible Asset, Finite-Lived [Line Items] | ||
| Gross Cost | 469 | 476 |
| Accumulated Amortization | 423 | 399 |
| Net Carrying Amount | $ 46 | $ 77 |
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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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