Commitments and Contingencies - Schedule of Principal Debt Repayments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
2025	$ 2,324,488
2026	3,788,229
2027	4,027,931
2028	1,163,764
2029	2,366,564
Thereafter	78,573
Net book value	13,749,549
Total loan exposure including non-consolidated senior interests	817,500	$ 1,100,000
Loan participations sold, net, face amount	100,064	337,721
Secured debt, net
Debt Instrument [Line Items]
2025	1,385,568
2026	3,464,203
2027	3,411,700
2028	525,006
2029	840,479
Thereafter	78,573
Net book value	9,705,529	12,697,058
Long-term debt	9,696,334	12,683,095
Asset-specific debt, net
Debt Instrument [Line Items]
2025	924,162
2026	0
2027	0
2028	0
2029	303,948
Thereafter	0
Net book value	1,228,110	1,004,097
Long-term debt	1,224,841	1,000,210
Term Loans
Debt Instrument [Line Items]
2025	14,758
2026	324,026
2027	14,758
2028	638,758
2029	772,137
Thereafter	0
Net book value	$ 1,764,437	2,135,221
Amortization percentage	1.00%
Long-term debt	$ 1,732,073	2,101,632
Senior secured notes, net
Debt Instrument [Line Items]
2025	0
2026	0
2027	335,316
2028	0
2029	450,000
Thereafter	0
Net book value	785,316	366,090
Long-term debt	771,035	362,763
Convertible Notes
Debt Instrument [Line Items]
2025	0
2026	0
2027	266,157
2028	0
2029	0
Thereafter	0
Net book value	266,157	300,000
Long-term debt	263,616	295,847
Securitized debt obligations, net
Debt Instrument [Line Items]
Net book value	1,936,967	2,507,514
Long-term debt	$ 1,936,956	$ 2,505,417