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v3.25.2

Goodwill and Other Intangibles (Narrative) (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2025 | Sep. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Goodwill, impairment loss |  | $ 0 |  |  |  |  |
Indefinite-lived intangible assets | $ 0 |  |  | $ 0 |  | $ 0 |
Goodwill | 23,919,000,000 |  | $ 17,516,000,000 | 23,919,000,000 | $ 17,516,000,000 | $ 23,306,000,000 | $ 17,231,000,000
Aggregate amortization expense | 140,000,000 |  | $ 89,000,000 | 279,000,000 | $ 179,000,000 |  |
Consulting |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Goodwill expected to be tax deductible | 20,000,000 |  |  | 20,000,000 |  |  |
Goodwill | 4,700,000,000 |  |  | 4,700,000,000 |  |  |
Risk and Insurance Services |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Goodwill | $ 19,300,000,000 |  |  | $ 19,300,000,000 |  |  |

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