Loans Receivable, Net - Loans Receivable Based On Our Internal Risk Ratings, Separated By Year Of Origination (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	$ 22,003,017	$ 16,572,715	$ 16,164,801
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	(124,679)	(173,549)	0
Loans receivable, net	21,878,338	16,399,166
U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	8,514,292	847,573
Year Two	786,287	3,075,651
Year Three	1,623,239	4,153,881
Year Four	2,858,738	1,998,625
Year Five	958,787	429,703
Prior	399,977	443,321
Loans receivable	15,141,320	10,948,754
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest			0
Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	2,101,240	105,300
Year Two	98,412	2,782,719
Year Three	2,582,847	615,533
Year Four	394,949	94,757
Year Five	0	113,653
Prior	0	0
Loans receivable	5,177,448	3,711,962
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest			0
Unique Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	325,097
Year Three	322,787	1,189,101
Year Four	1,017,799	0
Year Five	0	0
Prior	58,854	60,604
Loans receivable	1,399,440	1,574,802
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	(32,657)	(33,159)	0
Impaired loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	284,809
Year Four	284,809	0
Year Five	0	0
Prior	0	52,388
Loans receivable	284,809	337,197
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	(54,874)	(69,661)	$ 0
Total loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	10,615,532	952,873
Year Two	884,699	6,183,467
Year Three	4,528,873	6,243,324
Year Four	4,556,295	2,093,382
Year Five	958,787	543,356
Prior	458,831	556,313
Loans receivable	22,003,017
1
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	642,776	777,163
1 | U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	125,873	0
Year Two	0	0
Year Three	354,775	79,848
Year Four	1,116,872	1,134,288
Year Five	96,539	1,055,142
Prior	0	0
Loans receivable	642,776	546,385
1 | Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	136,021
Year Four	0	94,757
Year Five	0	0
Prior	0	0
Loans receivable	0	230,778
1 | 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
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	125,873	0
Year Two	0	231,796
Year Three	196,017	389,695
Year Four	72,752	138,663
Year Five	248,134	17,009
Prior	0	0
Loans receivable	642,776	777,163
2
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	5,200,533	2,513,848
2 | U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One		231,796
Year Two	876,536	0
Year Three	82,274	222,677
Year Four	292,520	227,466
Year Five	534,938	63,293
Prior	0	0
Loans receivable	3,097,113	2,513,848
2 | Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	698,130	0
Year Two	98,412	0
Year Three	1,306,878	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	2,103,420	0
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	1,574,666	0
Year Two	526,251	282,017
Year Three	1,528,391	1,172,168
Year Four	1,134,176	757,138
Year Five	354,775	79,848
Prior	82,274	222,677
Loans receivable	5,200,533	2,513,848
3
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	13,604,027	9,911,914
3 | U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	196,017	253,674
Year Two	427,839	282,017
Year Three	7,511,883	781,595
Year Four	228,264	220,644
Year Five	63,358	105,380
Prior	0	0
Loans receivable	10,617,157	6,428,187
3 | Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	1,403,110	105,300
Year Two	0	2,526,225
Year Three	932,939	479,512
Year Four	394,949	0
Year Five	0	113,653
Prior	0	0
Loans receivable	2,730,998	3,224,690
3 | Unique Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	198,433
Year Four	197,018	0
Year Five	0	0
Prior	58,854	60,604
Loans receivable	255,872	259,037
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	8,914,993	886,895
Year Two	358,448	4,917,522
Year Three	2,042,109	2,350,842
Year Four	1,708,839	1,134,288
Year Five	292,520	341,119
Prior	287,118	281,248
Loans receivable	13,604,027	9,911,914
4
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable	2,270,872	3,032,593
4 | U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	72,752	43,906
Year Two	221,513	1,172,168
Year Three	358,448	2,391,297
Year Four	0	65,978
Year Five	89,439	0
Prior	0	0
Loans receivable	784,274	1,460,334
4 | Non-U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	256,494
Year Three	343,030	0
Year Four	0	0
Year Five	0	0
Prior	0	0
Loans receivable	343,030	256,494
4 | Unique Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	325,097
Year Three	322,787	990,668
Year Four	820,781	0
Year Five	0	0
Prior	0	0
Loans receivable	1,143,568	1,315,765
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	65,978
Year Two	0	752,132
Year Three	762,356	2,045,810
Year Four	1,355,719	63,293
Year Five	63,358	105,380
Prior	89,439	0
Loans receivable	2,270,872	3,032,593
5 | U.S. Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	248,134	17,009
Year Two	1,134,176	757,138
Year Three	1,109,170	1,672,897
Year Four	0	170,541
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	0
Year Three	0	284,809
Year Four	284,809	0
Year Five	0	0
Prior	0	52,388
Loans receivable	284,809	337,197
5 | Total loans receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year One	0	0
Year Two	0	0
Year Three	0	284,809
Year Four	284,809	0
Year Five	0	0
Prior	0	52,388
Loans receivable	$ 284,809	$ 337,197