Commitments and Contingencies - Schedule of Principal Debt Repayments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
2025 (remaining)	$ 997,626
2026	3,716,972
2027	3,999,786
2028	1,374,061
2029	2,733,021
Thereafter	496,377
Net book value	13,317,843
Total loan exposure including non-consolidated senior interests	845,800
Loan participations sold, net, face amount	101,672	$ 100,064
Secured debt, net
Debt Instrument [Line Items]
2025 (remaining)	986,557
2026	3,392,946
2027	3,383,555
2028	735,303
2029	1,174,497
Thereafter	338,683
Net book value	10,011,541	9,705,529
Long-term debt	10,000,027	9,696,334
Asset-specific debt, net
Debt Instrument [Line Items]
2025 (remaining)	0
2026	0
2027	0
2028	0
2029	336,387
Thereafter	157,694
Net book value	494,081	1,228,110
Long-term debt	492,235	1,224,841
Term Loans
Debt Instrument [Line Items]
2025 (remaining)	11,069
2026	324,026
2027	14,758
2028	638,758
2029	772,137
Thereafter	0
Net book value	$ 1,760,748	1,764,437
Amortization percentage	1.00%
Long-term debt	$ 1,730,565	1,732,073
Senior secured notes, net
Debt Instrument [Line Items]
2025 (remaining)	0
2026	0
2027	335,316
2028	0
2029	450,000
Thereafter	0
Net book value	785,316	785,316
Long-term debt	779,187	771,035
Convertible Notes
Debt Instrument [Line Items]
2025 (remaining)	0
2026	0
2027	266,157
2028	0
2029	0
Thereafter	0
Net book value	266,157	266,157
Long-term debt	263,898	263,616
Securitized debt obligations, net
Debt Instrument [Line Items]
Net book value	2,569,979	1,936,967
Long-term debt	$ 2,559,896	$ 1,936,956