Commitments and Contingencies - Schedule of Principal Debt Repayments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
2024	$ 2,467,573
2025	2,425,664
2026	5,601,381
2027	3,827,957
2028	508,361
Thereafter	1,671,530
Net book value	$ 16,502,466
Amortization percentage	1.00%
Securitized debt obligations excluded from contractual obligations	$ 2,500,000
Nonconsolidated securitized debt excluded from contractual obligations	1,100,000
Net loan exposure, loan participations sold	337,700
Loan participations sold, net, Face Amount	337,721	$ 224,744
Secured Debt
Debt Instrument [Line Items]
2024	2,445,576
2025	1,577,980
2026	4,298,806
2027	3,153,609
2028	500,105
Thereafter	720,982
Net book value	12,697,058
Asset-Specific Debt
Debt Instrument [Line Items]
2024	0
2025	825,687
2026	0
2027	0
2028	0
Thereafter	178,410
Net book value	1,004,097
Term Loans
Debt Instrument [Line Items]
2024	21,997
2025	21,997
2026	1,302,575
2027	8,258
2028	8,256
Thereafter	772,138
Net book value	2,135,221
Senior Secured Notes
Debt Instrument [Line Items]
2024	0
2025	0
2026	0
2027	366,090
2028	0
Thereafter	0
Net book value	366,090
Convertible Notes
Debt Instrument [Line Items]
2024	0
2025	0
2026	0
2027	300,000
2028	0
Thereafter	0
Net book value	$ 300,000