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Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities - Additional Information (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Noncash or Part Noncash Acquisitions [Line Items] |  |  |
Payments of accrued federal income tax payments due |  | $ 91 |
Tax payments associated with gain on disposal of businesses sold |  | 30 |
Effect of foreign exchange rate changes on cash and cash equivalents inclusive of fiduciary cash | $ 66 | $ 45 |
Deferred federal income tax payments amounts due to Hurricane Debby and Milton tax relief |  |  | $ 90

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