Secured Debt, Net - Schedule of Secured Credit Facilities (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) lender loan	Dec. 31, 2023 USD ($)
Schedule Of Secured Credit Facilities [Line Items]
Total secured debt	$ 13,749,549
Secured debt, net | Line of Credit
Schedule Of Secured Credit Facilities [Line Items]
Collateral	$ 808,900
Secured debt, net | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Lenders | lender	14
Total secured debt	$ 9,705,529	$ 12,697,058
Loan Count | loan	115
Collateral	$ 14,807,821	$ 18,594,318
Secured debt, net | Weighted Average | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	34.00%
Secured debt, net | Minimum | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%
Secured debt, net | Maximum | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	100.00%
Secured debt, net | USD | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Lenders | lender	13
Total secured debt	$ 4,796,857
Loan Count | loan	85
Collateral	$ 8,302,871
Secured debt, net | USD | Weighted Average | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	37.00%
Secured debt, net | USD | Minimum | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%
Secured debt, net | USD | Maximum | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	100.00%
Secured debt, net | GBP | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Lenders | lender	6
Total secured debt	$ 2,161,978
Loan Count | loan	16
Collateral	$ 2,877,608
Secured debt, net | GBP | Weighted Average | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	26.00%
Secured debt, net | GBP | Minimum | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%
Secured debt, net | GBP | Maximum | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	50.00%
Secured debt, net | EUR | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Lenders | lender	7
Total secured debt	$ 1,653,370
Loan Count | loan	10
Collateral	$ 2,260,687
Secured debt, net | EUR | Weighted Average | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	40.00%
Secured debt, net | EUR | Minimum | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%
Secured debt, net | EUR | Maximum | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	100.00%
Secured debt, net | Others | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Lenders | lender	4
Total secured debt	$ 1,093,324
Loan Count | loan	4
Collateral	$ 1,366,655
Recourse Limitation	25.00%
Secured debt, net | Others | Weighted Average | Line of Credit | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%