v3.25.4

Goodwill and Other Intangibles (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Segment Reporting Information [Line Items] |  |  |
Indefinite lived identified intangible assets | $ 0 | $ 0 |
Goodwill | 24,337,000,000 | 23,306,000,000 | $ 17,231,000,000
Aggregate amortization expense | 549,000,000 | 377,000,000 | $ 343,000,000
Risk and Insurance Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill expected to be tax deductible | 264,000,000 | 1,800,000,000 |
Goodwill | 19,500,000,000 |  |
Consulting |  |  |
Segment Reporting Information [Line Items] |  |  |
Goodwill expected to be tax deductible | 29,000,000 | $ 88,000,000 |
Goodwill | $ 4,800,000,000 |  |

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