Secured Debt, Net - Schedule of Secured Credit Facilities (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2025 USD ($) lender loan	Dec. 31, 2024 USD ($)
Schedule Of Secured Credit Facilities [Line Items]
Total face value	$ 14,035,684
Secured debt, net | Secured debt, net
Schedule Of Secured Credit Facilities [Line Items]
Collateral	$ 2,500,000
Secured debt, net | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Lenders | lender	14
Total face value	$ 10,693,596	$ 9,705,529
Loan Count | loan	122
Collateral	$ 15,460,065	$ 14,807,821
Secured debt, net | Weighted Average | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	31.00%
Secured debt, net | Minimum | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%
Secured debt, net | Maximum | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	100.00%
Secured debt, net | USD | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Lenders | lender	13
Total face value	$ 4,451,693
Loan Count | loan	87
Collateral	$ 7,205,566
Secured debt, net | USD | Weighted Average | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	33.00%
Secured debt, net | USD | Minimum | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%
Secured debt, net | USD | Maximum | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	100.00%
Secured debt, net | GBP | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Lenders | lender	6
Total face value	$ 2,802,902
Loan Count | loan	17
Collateral	$ 3,659,704
Secured debt, net | GBP | Weighted Average | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%
Secured debt, net | GBP | Minimum | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%
Secured debt, net | EUR | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Lenders | lender	7
Total face value	$ 1,936,500
Loan Count | loan	11
Collateral	$ 2,716,669
Secured debt, net | EUR | Weighted Average | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	42.00%
Secured debt, net | EUR | Minimum | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%
Secured debt, net | EUR | Maximum | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	100.00%
Secured debt, net | Others | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Lenders | lender	4
Total face value	$ 1,502,501
Loan Count | loan	7
Collateral	$ 1,878,126
Recourse Limitation	25.00%
Secured debt, net | Others | Weighted Average | Secured debt, net | Secured credit facilities
Schedule Of Secured Credit Facilities [Line Items]
Recourse Limitation	25.00%