Loans Receivable, Net - Schedule Of Loan Receivable Portfolio Based On Floor Rate (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	$ 23,873,563	$ 22,156,437
Loans accounted under cost-recovery method	$ 286,300
Weighted Average
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Weighted-average index rate floor	0.33%
Excluding 0.0% index rate floors, weighted-average index rate floor	0.58%
Non-USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	$ 7,245,466
USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	16,628,097
Fixed Rate
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	94,568
Fixed Rate | Non-USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	57,068
Fixed Rate | USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	37,500
0.00% or no floor
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	10,466,391
0.00% or no floor | Non-USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	6,544,292
0.00% or no floor | USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	3,922,099
0.01% to 0.25% floor
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	8,410,485
0.01% to 0.25% floor | Non-USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	479,462
0.01% to 0.25% floor | USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	7,931,023
0.26% to 1.00% floor
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	1,372,043
0.26% to 1.00% floor | Non-USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	51,856
0.26% to 1.00% floor | USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	1,320,187
1.01% or more floor
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	3,530,076
1.01% or more floor | Non-USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	112,788
1.01% or more floor | USD
Disclosure Details Of Loan Receivable Portfolio Based On Floor Rate [Line Items]
Loans receivable	$ 3,417,288