Secured Debt, Net - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2022 USD ($) credit_facility	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Interest expense	$ 710,904,000	$ 340,223,000	$ 347,471,000
Covenants, minimum tangible net worth	$ 3,600,000,000
Covenants, percentage of recourse indebtedness	0.05
Minimum
Debt Instrument [Line Items]
Covenants, EBITDA to fixed charges, in percent	1.4
Covenants, percentage of tangible assets on cash proceeds from equity issuances	0.75
Covenants, minimum cash liquidity amount	$ 10,000,000.0
Maximum
Debt Instrument [Line Items]
Covenants, percentage of tangible assets on cash proceeds from equity issuances	0.85
Covenants, indebtedness to total assets, in percent	0.8333
Secured credit facilities | Line of Credit
Debt Instrument [Line Items]
New borrowings	$ 3,350,146,000	7,763,563,000
Collateral	$ 19,694,790,000	17,042,381,000
Number of new secured credit facilities | credit_facility	2
Maximum borrowing capacity	$ 2,200,000,000
Number of existing secured credit facilities with increased size | credit_facility	6
Additional credit capacity	$ 1,400,000,000
Remaining borrowing capacity	1,500,000,000
Borrowings	13,549,748,000	12,299,580,000
Secured credit facilities | Line of Credit | New Borrowings
Debt Instrument [Line Items]
New borrowings	4,600,000,000
Collateral	5,900,000,000
Acquisition facility | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	250,000,000
Remaining borrowing capacity		147,500,000
Borrowings	0	0
Interest expense	1,200,000	1,200,000
Amortization of deferred fees and expenses	$ 333,000	$ 354,000