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Significant Accounting Policies - Additional Cash Flow Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Accounting Policies [Abstract]    
Cash paid for interest $ 174,073 $ 191,569
Cash paid for income taxes 0 0
Unsettled securities transactions 10,456 26,255
Right-of-use lease assets obtained in exchange for lessee operating lease liabilities $ 9,150 $ 4,097