Commitments and Contingencies - Schedule of Principal Debt Repayments (Detail) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
2022 (remaining)	$ 115,469
2023	582,269
2024	3,388,595
2025	1,927,110
2026	5,799,616
2027	3,842,227
Thereafter	1,275,405
Net book value	$ 16,930,691
Amortization percentage	1.00%
Securitized debt obligations excluded from contractual obligations	$ 2,900,000
Nonconsolidated securitized debt excluded from contractual obligations	1,600,000
Loan participations sold, net, Face Amount	207,762	$ 0
Secured Debt
Debt Instrument [Line Items]
2022 (remaining)	110,784
2023	343,531
2024	3,369,857
2025	1,189,147
2026	4,500,298
2027	2,979,756
Thereafter	719,839
Net book value	13,213,212
Asset-Specific Debt
Debt Instrument [Line Items]
2022 (remaining)	0
2023	0
2024	0
2025	719,225
2026	0
2027	157,471
Thereafter	83,066
Net book value	959,762
Term Loans
Debt Instrument [Line Items]
2022 (remaining)	4,685
2023	18,738
2024	18,738
2025	18,738
2026	1,299,318
2027	5,000
Thereafter	472,500
Net book value	1,837,717
Senior Secured Notes
Debt Instrument [Line Items]
2022 (remaining)	0
2023	0
2024	0
2025	0
2026	0
2027	400,000
Thereafter	0
Net book value	400,000
Convertible Notes
Debt Instrument [Line Items]
2022 (remaining)	0
2023	220,000
2024	0
2025	0
2026	0
2027	300,000
Thereafter	0
Net book value	$ 520,000

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