Loans Receivable and Allowance for Credit Losses - Aging Analysis on Loans Held-for-Investment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Nonaccrual and Past Due Loans
Total	$ 52,210,782	$ 48,202,430
Commercial Lending
Nonaccrual and Past Due Loans
Total	37,045,191	34,780,453
Commercial Lending | C&I
Nonaccrual and Past Due Loans
Total	16,581,079	15,711,095
Commercial Lending | CRE
Nonaccrual and Past Due Loans
Total	14,777,081	13,857,870
Commercial Lending | Residential loan | Multifamily Residential
Nonaccrual and Past Due Loans
Total	5,023,163	4,573,068
Commercial Lending | Construction and land
Nonaccrual and Past Due Loans
Total	663,868	638,420
Commercial Lending | Total CRE
Nonaccrual and Past Due Loans
Total	20,464,112	19,069,358
Consumer Lending
Nonaccrual and Past Due Loans
Total	15,165,591	13,421,977
Consumer Lending | Residential loan | Single-Family Residential
Nonaccrual and Past Due Loans
Total	13,383,060	11,223,027
Consumer Lending | HELOCs
Nonaccrual and Past Due Loans
Total	1,722,204	2,122,655
Consumer Lending | Total residential mortgage
Nonaccrual and Past Due Loans
Total	15,105,264	13,345,682
Consumer Lending | Other consumer
Nonaccrual and Past Due Loans
Total	60,327	76,295
Current Accruing Loans
Nonaccrual and Past Due Loans
Total	51,984,909	48,040,733
Current Accruing Loans | Commercial Lending
Nonaccrual and Past Due Loans
Total	36,927,223	34,682,072
Current Accruing Loans | Commercial Lending | C&I
Nonaccrual and Past Due Loans
Total	16,508,394	15,651,312
Current Accruing Loans | Commercial Lending | CRE
Nonaccrual and Past Due Loans
Total	14,750,315	13,820,441
Current Accruing Loans | Commercial Lending | Residential loan | Multifamily Residential
Nonaccrual and Past Due Loans
Total	5,017,897	4,571,899
Current Accruing Loans | Commercial Lending | Construction and land
Nonaccrual and Past Due Loans
Total	650,617	638,420
Current Accruing Loans | Commercial Lending | Total CRE
Nonaccrual and Past Due Loans
Total	20,418,829	19,030,760
Current Accruing Loans | Consumer Lending
Nonaccrual and Past Due Loans
Total	15,057,686	13,358,661
Current Accruing Loans | Consumer Lending | Residential loan | Single-Family Residential
Nonaccrual and Past Due Loans
Total	13,313,455	11,183,134
Current Accruing Loans | Consumer Lending | HELOCs
Nonaccrual and Past Due Loans
Total	1,687,301	2,102,523
Current Accruing Loans | Consumer Lending | Total residential mortgage
Nonaccrual and Past Due Loans
Total	15,000,756	13,285,657
Current Accruing Loans | Consumer Lending | Other consumer
Nonaccrual and Past Due Loans
Total	56,930	73,004
Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Total	122,999	62,171
Total Accruing Past Due Loans | Commercial Lending
Nonaccrual and Past Due Loans
Total	53,014	24,540
Total Accruing Past Due Loans | Commercial Lending | C&I
Nonaccrual and Past Due Loans
Total	35,649	9,355
Total Accruing Past Due Loans | Commercial Lending | CRE
Nonaccrual and Past Due Loans
Total	3,517	14,185
Total Accruing Past Due Loans | Commercial Lending | Residential loan | Multifamily Residential
Nonaccrual and Past Due Loans
Total	597	1,000
Total Accruing Past Due Loans | Commercial Lending | Construction and land
Nonaccrual and Past Due Loans
Total	13,251	0
Total Accruing Past Due Loans | Commercial Lending | Total CRE
Nonaccrual and Past Due Loans
Total	17,365	15,185
Total Accruing Past Due Loans | Consumer Lending
Nonaccrual and Past Due Loans
Total	69,985	37,631
Total Accruing Past Due Loans | Consumer Lending | Residential loan | Single-Family Residential
Nonaccrual and Past Due Loans
Total	45,228	25,653
Total Accruing Past Due Loans | Consumer Lending | HELOCs
Nonaccrual and Past Due Loans
Total	21,492	8,786
Total Accruing Past Due Loans | Consumer Lending | Total residential mortgage
Nonaccrual and Past Due Loans
Total	66,720	34,439
Total Accruing Past Due Loans | Consumer Lending | Other consumer
Nonaccrual and Past Due Loans
Total	3,265	3,192
Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Total	88,791	42,677
Accruing Loans 30-59 Days Past Due | Commercial Lending
Nonaccrual and Past Due Loans
Total	44,117	21,345
Accruing Loans 30-59 Days Past Due | Commercial Lending | C&I
Nonaccrual and Past Due Loans
Total	28,550	6,482
Accruing Loans 30-59 Days Past Due | Commercial Lending | CRE
Nonaccrual and Past Due Loans
Total	1,719	14,185
Accruing Loans 30-59 Days Past Due | Commercial Lending | Residential loan | Multifamily Residential
Nonaccrual and Past Due Loans
Total	597	678
Accruing Loans 30-59 Days Past Due | Commercial Lending | Construction and land
Nonaccrual and Past Due Loans
Total	13,251	0
Accruing Loans 30-59 Days Past Due | Commercial Lending | Total CRE
Nonaccrual and Past Due Loans
Total	15,567	14,863
Accruing Loans 30-59 Days Past Due | Consumer Lending
Nonaccrual and Past Due Loans
Total	44,674	21,332
Accruing Loans 30-59 Days Past Due | Consumer Lending | Residential loan | Single-Family Residential
Nonaccrual and Past Due Loans
Total	29,285	13,523
Accruing Loans 30-59 Days Past Due | Consumer Lending | HELOCs
Nonaccrual and Past Due Loans
Total	12,266	7,700
Accruing Loans 30-59 Days Past Due | Consumer Lending | Total residential mortgage
Nonaccrual and Past Due Loans
Total	41,551	21,223
Accruing Loans 30-59 Days Past Due | Consumer Lending | Other consumer
Nonaccrual and Past Due Loans
Total	3,123	109
Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Total	34,208	19,494
Accruing Loans 60-89 Days Past Due | Commercial Lending
Nonaccrual and Past Due Loans
Total	8,897	3,195
Accruing Loans 60-89 Days Past Due | Commercial Lending | C&I
Nonaccrual and Past Due Loans
Total	7,099	2,873
Accruing Loans 60-89 Days Past Due | Commercial Lending | CRE
Nonaccrual and Past Due Loans
Total	1,798	0
Accruing Loans 60-89 Days Past Due | Commercial Lending | Residential loan | Multifamily Residential
Nonaccrual and Past Due Loans
Total	0	322
Accruing Loans 60-89 Days Past Due | Commercial Lending | Construction and land
Nonaccrual and Past Due Loans
Total	0	0
Accruing Loans 60-89 Days Past Due | Commercial Lending | Total CRE
Nonaccrual and Past Due Loans
Total	1,798	322
Accruing Loans 60-89 Days Past Due | Consumer Lending
Nonaccrual and Past Due Loans
Total	25,311	16,299
Accruing Loans 60-89 Days Past Due | Consumer Lending | Residential loan | Single-Family Residential
Nonaccrual and Past Due Loans
Total	15,943	12,130
Accruing Loans 60-89 Days Past Due | Consumer Lending | HELOCs
Nonaccrual and Past Due Loans
Total	9,226	1,086
Accruing Loans 60-89 Days Past Due | Consumer Lending | Total residential mortgage
Nonaccrual and Past Due Loans
Total	25,169	13,216
Accruing Loans 60-89 Days Past Due | Consumer Lending | Other consumer
Nonaccrual and Past Due Loans
Total	142	3,083
Nonperforming Financial Instruments
Nonaccrual and Past Due Loans
Total	102,874	99,526
Nonperforming Financial Instruments | Commercial Lending
Nonaccrual and Past Due Loans
Total	64,954	73,841
Nonperforming Financial Instruments | Commercial Lending | C&I
Nonaccrual and Past Due Loans
Total	37,036	50,428
Nonperforming Financial Instruments | Commercial Lending | CRE
Nonaccrual and Past Due Loans
Total	23,249	23,244
Nonperforming Financial Instruments | Commercial Lending | Residential loan | Multifamily Residential
Nonaccrual and Past Due Loans
Total	4,669	169
Nonperforming Financial Instruments | Commercial Lending | Construction and land
Nonaccrual and Past Due Loans
Total	0	0
Nonperforming Financial Instruments | Commercial Lending | Total CRE
Nonaccrual and Past Due Loans
Total	27,918	23,413
Nonperforming Financial Instruments | Consumer Lending
Nonaccrual and Past Due Loans
Total	37,920	25,685
Nonperforming Financial Instruments | Consumer Lending | Residential loan | Single-Family Residential
Nonaccrual and Past Due Loans
Total	24,377	14,240
Nonperforming Financial Instruments | Consumer Lending | HELOCs
Nonaccrual and Past Due Loans
Total	13,411	11,346
Nonperforming Financial Instruments | Consumer Lending | Total residential mortgage
Nonaccrual and Past Due Loans
Total	37,788	25,586
Nonperforming Financial Instruments | Consumer Lending | Other consumer
Nonaccrual and Past Due Loans
Total	$ 132	$ 99