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v3.25.1

Fiduciary Assets and Liabilities (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Fiduciary Assets and Liabilities [Line Items] |  |  |
Net uncollected premiums and claims receivable and payable | $ 16,300 |  | $ 15,100
Operating Segments | Risk and Insurance Services |  |  |
Fiduciary Assets and Liabilities [Line Items] |  |  |
Interest on fiduciary funds | $ 103 | $ 122 |

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- Definition Fiduciary Assets and Liabilities [Line Items] + References No definition available. + Details
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- Definition Interest income earned on both U.S. and foreign fiduciary funds held in trust. + References No definition available. + Details
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- Definition Net uncollected premiums and claims and the related payables are not assets and liabilities of MMC and are not included in the accompanying consolidated balance sheets. + References No definition available. + Details
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- Details
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- Details
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Period Type: |