v3.25.4

Supplemental Disclosures to the Consolidated Statements of Cash Flows (Narrative) (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2023 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Loss Contingencies [Line Items] |  |  |  |
Income taxes paid, net of refunds |  | $ 1,292 | $ 1,200 | $ 1,100
Non-cash issuances of common stock |  | 359 | 333 | 310
Stock-based compensation expense |  | $ 394 | $ 368 | 363
Risk and Insurance Services | Guy Carpenter Reinsurance Group |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Gain from the settlement | $ 58 |  |  | $ 58
Litigation settlement, expense | $ 10 |  |  |

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