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Summary of Significant Accounting Policies - Cash and Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Sep. 30, 2024
Dec. 31, 2023
Accounting Policies [Abstract]        
Cash and cash equivalents $ 2,005,508 $ 1,553,642 $ 1,303,464 $ 1,389,648
Restricted cash 2,908,885 2,902,703 2,851,547 1,751,887
Total cash and cash equivalents and restricted cash $ 4,914,393 $ 4,456,345 $ 4,155,011 $ 3,141,535