Secured Debt, Net - Additional Information (Detail)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) lender	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Interest expense	$ 353,972,000	$ 202,375,000	$ 1,015,718,000	$ 439,708,000
Covenants, minimum tangible net worth	$ 3,600,000,000		$ 3,600,000,000
Covenants, percentage of recourse indebtedness	0.05		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		$ 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		0.8333
Secured credit facilities | Line of Credit
Debt Instrument [Line Items]
New borrowings			$ 66,924,000		$ 3,350,146,000
Collateral	$ 18,613,231,000		$ 18,613,231,000		19,694,790,000
Number of lenders | lender			15
Remaining borrowing capacity	1,300,000,000		$ 1,300,000,000
Borrowings	12,809,913,000		12,809,913,000		13,549,748,000
Secured credit facilities | Line of Credit | New Borrowings
Debt Instrument [Line Items]
New borrowings			73,900,000
Collateral	92,400,000		92,400,000
Acquisition facility | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	100,000,000		100,000,000
Borrowings	$ 0		0		0
Interest expense			599,000		1,200,000
Amortization of deferred fees and expenses			$ 199,000		$ 333,000