Loans Receivable, Net - Loans Receivable Based On Our Internal Risk Ratings, Separated By Year Of Origination (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Total loans receivable
Loans receivable	$ 21,602,517			$ 21,602,517	$ 23,787,012
CECL reserve	(1,011,059)	$ (893,938)	$ (751,370)	(1,011,059)	(576,936)	$ (463,423)	$ (363,875)	$ (336,591)	$ (326,137)
Loans receivable, net	20,591,458			20,591,458	23,210,076
Gross charge-offs
Year one				0
Year two				0
Year three				(17,450)
Year four				(53,587)
Year five				0
Prior				(19,502)
Charge-offs	(16,989)	(12,537)	(61,013)	(90,539)
Total loans receivable
Total loans receivable
Year one	149,237			149,237	0
Year two	0			0	5,128,418
Year three	4,812,658			4,812,658	9,804,976
Year four	8,672,684			8,672,684	919,167
Year five	873,456			873,456	3,376,753
Prior	7,094,482			7,094,482	4,557,698
Loans receivable	21,602,517			21,602,517	23,787,012
Unique Loans
Total loans receivable
Year one	0			0	0
Year two	0			0	894,599
Year three	909,171			909,171	0
Year four	0			0	0
Year five	0			0	264,457
Prior	862,453			862,453	797,395
Loans receivable	1,771,624			1,771,624	1,956,451
CECL reserve	(48,300)	(43,876)	(43,453)	(48,300)	(49,371)	(45,462)	(46,089)	(46,443)	(45,960)
Gross charge-offs
Charge-offs	0	0	0
Impaired loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	492,615			492,615	508,264
Year four	1,146,576			1,146,576	140,000
Year five	138,840			138,840	0
Prior	1,387,581			1,387,581	1,229,015
Loans receivable	3,165,612			3,165,612	1,877,279
CECL reserve	(883,577)	(759,380)	(602,599)	(883,577)	(417,670)	$ (322,551)	$ (214,401)	$ (197,258)	$ (189,778)
Gross charge-offs
Charge-offs	(16,989)	$ (12,537)	$ (61,013)
U.S. loans
Total loans receivable
Year one	149,237			149,237	0
Year two	0			0	2,556,605
Year three	2,192,111			2,192,111	6,981,813
Year four	5,418,863			5,418,863	685,744
Year five	640,437			640,437	827,750
Prior	2,926,617			2,926,617	2,531,288
Loans receivable	11,327,265			11,327,265	13,583,200
Non-U.S. loans
Total loans receivable
Year one	0			0	0
Year two	0			0	1,677,214
Year three	1,218,761			1,218,761	2,314,899
Year four	2,107,245			2,107,245	93,423
Year five	94,179			94,179	2,284,546
Prior	1,917,831			1,917,831	0
Loans receivable	5,338,016			5,338,016	6,370,082
1
Total loans receivable
Loans receivable	2,058,795			2,058,795	763,101
1 | Total loans receivable
Total loans receivable
Year one	0			0	0
Year two	0			0	172,575
Year three	151,575			151,575	443,739
Year four	442,212			442,212	39,877
Year five	60,364			60,364	52,939
Prior	1,404,644			1,404,644	53,971
Loans receivable	2,058,795			2,058,795	763,101
1 | Unique Loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	0			0	0
Loans receivable	0			0	0
1 | Impaired loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	0			0	0
Loans receivable	0			0	0
1 | U.S. loans
Total loans receivable
Year one	0			0	0
Year two	0			0	172,575
Year three	151,575			151,575	443,739
Year four	352,654			352,654	39,877
Year five	60,364			60,364	52,939
Prior	1,404,644			1,404,644	53,971
Loans receivable	1,969,237			1,969,237	763,101
1 | Non-U.S. loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	89,558			89,558	0
Year five	0			0	0
Prior	0			0	0
Loans receivable	89,558			89,558	0
2
Total loans receivable
Loans receivable	3,938,950			3,938,950	6,143,184
2 | Total loans receivable
Total loans receivable
Year one	0			0	0
Year two	0			0	1,229,951
Year three	734,060			734,060	3,113,924
Year four	2,686,375			2,686,375	125,602
Year five	94,179			94,179	235,532
Prior	424,336			424,336	1,438,175
Loans receivable	3,938,950			3,938,950	6,143,184
2 | Unique Loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	0			0	0
Loans receivable	0			0	0
2 | Impaired loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	0			0	0
Loans receivable	0			0	0
2 | U.S. loans
Total loans receivable
Year one	0			0	0
Year two	0			0	195,755
Year three	196,997			196,997	1,883,162
Year four	1,835,751			1,835,751	32,179
Year five	0			0	200,917
Prior	285,520			285,520	1,438,175
Loans receivable	2,318,268			2,318,268	3,750,188
2 | Non-U.S. loans
Total loans receivable
Year one	0			0	0
Year two	0			0	1,034,196
Year three	537,063			537,063	1,230,762
Year four	850,624			850,624	93,423
Year five	94,179			94,179	34,615
Prior	138,816			138,816	0
Loans receivable	1,620,682			1,620,682	2,392,996
3
Total loans receivable
Loans receivable	9,595,696			9,595,696	12,277,518
3 | Total loans receivable
Total loans receivable
Year one	149,237			149,237	0
Year two	0			0	3,408,227
Year three	3,198,899			3,198,899	4,814,979
Year four	3,494,025			3,494,025	613,688
Year five	580,073			580,073	2,895,114
Prior	2,173,462			2,173,462	545,510
Loans receivable	9,595,696			9,595,696	12,277,518
3 | Unique Loans
Total loans receivable
Year one	0			0	0
Year two	0			0	894,599
Year three	909,171			909,171	0
Year four	0			0	0
Year five	0			0	264,457
Prior	282,964			282,964	186,253
Loans receivable	1,192,135			1,192,135	1,345,309
3 | Impaired loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	0			0	0
Loans receivable	0			0	0
3 | U.S. loans
Total loans receivable
Year one	149,237			149,237	0
Year two	0			0	1,870,610
Year three	1,608,030			1,608,030	3,730,842
Year four	2,326,962			2,326,962	613,688
Year five	580,073			580,073	380,726
Prior	474,972			474,972	359,257
Loans receivable	5,139,274			5,139,274	6,955,123
3 | Non-U.S. loans
Total loans receivable
Year one	0			0	0
Year two	0			0	643,018
Year three	681,698			681,698	1,084,137
Year four	1,167,063			1,167,063	0
Year five	0			0	2,249,931
Prior	1,415,526			1,415,526	0
Loans receivable	3,264,287			3,264,287	3,977,086
4
Total loans receivable
Loans receivable	2,843,464			2,843,464	2,725,930
4 | Total loans receivable
Total loans receivable
Year one	0			0	0
Year two	0			0	317,665
Year three	235,509			235,509	924,070
Year four	903,496			903,496	0
Year five	0			0	193,168
Prior	1,704,459			1,704,459	1,291,027
Loans receivable	2,843,464			2,843,464	2,725,930
4 | Unique Loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	579,489			579,489	611,142
Loans receivable	579,489			579,489	611,142
4 | Impaired loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	0			0	0
Loans receivable	0			0	0
4 | U.S. loans
Total loans receivable
Year one	0			0	0
Year two	0			0	317,665
Year three	235,509			235,509	924,070
Year four	903,496			903,496	0
Year five	0			0	193,168
Prior	761,481			761,481	679,885
Loans receivable	1,900,486			1,900,486	2,114,788
4 | Non-U.S. loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	363,489			363,489	0
Loans receivable	363,489			363,489	0
5
Total loans receivable
Loans receivable	3,165,612			3,165,612	1,877,279
5 | Total loans receivable
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	492,615			492,615	508,264
Year four	1,146,576			1,146,576	140,000
Year five	138,840			138,840	0
Prior	1,387,581			1,387,581	1,229,015
Loans receivable	3,165,612			3,165,612	1,877,279
5 | Unique Loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	0			0	0
Loans receivable	0			0	0
5 | Impaired loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	492,615			492,615	508,264
Year four	1,146,576			1,146,576	140,000
Year five	138,840			138,840	0
Prior	1,387,581			1,387,581	1,229,015
Loans receivable	3,165,612			3,165,612	1,877,279
5 | U.S. loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	0			0	0
Loans receivable	0			0	0
5 | Non-U.S. loans
Total loans receivable
Year one	0			0	0
Year two	0			0	0
Year three	0			0	0
Year four	0			0	0
Year five	0			0	0
Prior	0			0	0
Loans receivable	$ 0			$ 0	$ 0