Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Mar. 15, 2023	Jun. 30, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Supplemental Cash Flow Elements [Abstract]
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash inclusive of fiduciary cash			$ 64	$ (13)	$ 34
Cash received from settlement of contingent payments		$ 57
Deferred federal income tax payments amounts due to Hurricane Debby and Milton tax relief				$ 90
Deferred federal income tax payments amounts due to Hurricane Idalia Tax Relief					121
Payments of accrued federal income tax payments due	$ 31
Tax payments associated with gain on disposal of businesses sold					$ 30