Loans Receivable, Net - Loans Receivable Based On Our Internal Risk Ratings, Separated By Year Of Origination (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 24,896,364	$ 25,017,880
CECL reserve	(336,591)	(326,137)	$ (122,221)	$ (124,679)
Loans receivable, net	24,559,773	24,691,743
US Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	2,297,577
Year Two	2,362,316	8,082,061
Year Three	8,010,812	779,017
Year Four	791,889	1,220,686
Year Five	1,023,277	3,226,953
Prior	3,396,551	213,010
Loans receivable	15,584,845	15,819,304
Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	1,568,347
Year Two	1,636,595	2,195,536
Year Three	2,146,724	94,995
Year Four	96,159	2,269,196
Year Five	2,305,499	86,706
Prior	88,680	0
Loans receivable	6,273,657	6,214,780
Unique Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	935,281
Year Two	919,438	0
Year Three	0	0
Year Four	0	289,141
Year Five	295,462	830,263
Prior	825,265	0
Loans receivable	2,040,165	2,054,685
CECL reserve	(46,443)	(45,960)	(30,897)	(32,657)
Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	208,894
Year Three	205,595	0
Year Four	0	0
Year Five	0	284,809
Prior	792,102	435,408
Loans receivable	997,697	929,111
CECL reserve	(197,258)	(189,778)	$ (54,874)	$ (54,874)
Total loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	4,801,205
Year Two	4,918,349	10,486,491
Year Three	10,363,131	874,012
Year Four	888,048	3,779,023
Year Five	3,624,238	4,428,731
Prior	5,102,598	648,418
Loans receivable	24,896,364	25,017,880
1
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	1,158,445	1,403,185
1 | US Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	145,152
Year Two	149,285	563,426
Year Three	489,225	5,075
Year Four	33,251	231,894
Year Five	27,597	415,471
Prior	416,370	0
Loans receivable	1,115,728	1,361,018
1 | Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	0	0
1 | Unique Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	42,167
Year Two	42,717	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	42,717	42,167
1 | Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	0	0
1 | Total loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	187,319
Year Two	192,002	563,426
Year Three	489,225	5,075
Year Four	33,251	231,894
Year Five	27,597	415,471
Prior	416,370	0
Loans receivable	1,158,445	1,403,185
2
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	6,462,458	5,880,424
2 | US Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	117,314
Year Two	117,387	1,742,289
Year Three	1,793,599	362,062
Year Four	32,182	156,478
Year Five	298,464	1,178,721
Prior	1,258,162	0
Loans receivable	3,499,794	3,556,864
2 | Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	590,580
Year Two	834,709	609,270
Year Three	998,823	94,995
Year Four	96,159	1,028,715
Year Five	1,032,973	0
Prior	0	0
Loans receivable	2,962,664	2,323,560
2 | Unique Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	0	0
2 | Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	0	0
2 | Total loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	707,894
Year Two	952,096	2,351,559
Year Three	2,792,422	457,057
Year Four	128,341	1,185,193
Year Five	1,331,437	1,178,721
Prior	1,258,162	0
Loans receivable	6,462,458	5,880,424
3
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	13,105,735	14,128,133
3 | US Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	2,035,111
Year Two	2,095,644	5,776,346
Year Three	5,199,940	411,880
Year Four	586,456	735,772
Year Five	697,216	472,134
Prior	508,615	80,323
Loans receivable	9,087,871	9,511,566
3 | Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	977,767
Year Two	801,886	1,586,266
Year Three	1,147,901	0
Year Four	0	896,392
Year Five	922,535	86,706
Prior	88,680	0
Loans receivable	2,961,002	3,547,131
3 | Unique Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	893,114
Year Two	876,721	0
Year Three	0	0
Year Four	0	0
Year Five	0	176,322
Prior	180,141	0
Loans receivable	1,056,862	1,069,436
3 | Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	0	0
3 | Total loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	3,905,992
Year Two	3,774,251	7,362,612
Year Three	6,347,841	411,880
Year Four	586,456	1,632,164
Year Five	1,619,751	735,162
Prior	777,436	80,323
Loans receivable	13,105,735	14,128,133
4
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	3,172,029	2,677,027
4 | US Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	528,048	0
Year Four	140,000	96,542
Year Five	0	1,160,627
Prior	1,213,404	132,687
Loans receivable	1,881,452	1,389,856
4 | Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	344,089
Year Five	349,991	0
Prior	0	0
Loans receivable	349,991	344,089
4 | Unique Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	289,141
Year Five	295,462	653,941
Prior	645,124	0
Loans receivable	940,586	943,082
4 | Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	0	0
4 | Total loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	528,048	0
Year Four	140,000	729,772
Year Five	645,453	1,814,568
Prior	1,858,528	132,687
Loans receivable	3,172,029	2,677,027
5 | US Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	0	0
5 | Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	0	0
5 | Unique Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	0	0
5 | Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	208,894
Year Three	205,595	0
Year Four	0	0
Year Five	0	284,809
Prior	792,102	435,408
Loans receivable	997,697	929,111
5 | Total loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	208,894
Year Three	205,595	0
Year Four	0	0
Year Five	0	284,809
Prior	792,102	435,408
Loans receivable	$ 997,697	$ 929,111