Loans Receivable and Allowance for Credit Losses - Schedule Of Aging Analysis Of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Nonaccrual and Past Due Loans
Loans held-for-investment	$ 53,726,637	$ 52,210,782
Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	53,462,858	51,984,909
Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	104,761	122,999
Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	55,354	88,791
Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	49,407	34,208
Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	159,018	102,874
Commercial Lending
Nonaccrual and Past Due Loans
Loans held-for-investment	37,672,102	37,045,191
Commercial Lending | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	37,537,266	36,927,223
Commercial Lending | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	30,353	53,014
Commercial Lending | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	11,025	44,117
Commercial Lending | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	19,328	8,897
Commercial Lending | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	104,483	64,954
Commercial Lending | C&I
Nonaccrual and Past Due Loans
Loans held-for-investment	17,397,158	16,581,079
Commercial Lending | C&I | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	17,288,138	16,508,394
Commercial Lending | C&I | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	22,855	35,649
Commercial Lending | C&I | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	5,690	28,550
Commercial Lending | C&I | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	17,165	7,099
Commercial Lending | C&I | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	86,165	37,036
Commercial Lending | CRE
Nonaccrual and Past Due Loans
Loans held-for-investment	14,655,340	14,777,081
Commercial Lending | CRE | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	14,647,270	14,750,315
Commercial Lending | CRE | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	5,640	3,517
Commercial Lending | CRE | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	3,755	1,719
Commercial Lending | CRE | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	1,885	1,798
Commercial Lending | CRE | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	2,430	23,249
Commercial Lending | Multifamily Residential
Nonaccrual and Past Due Loans
Loans held-for-investment	4,953,442	5,023,163
Commercial Lending | Multifamily Residential | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	4,947,939	5,017,897
Commercial Lending | Multifamily Residential | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	931	597
Commercial Lending | Multifamily Residential | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	653	597
Commercial Lending | Multifamily Residential | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	278	0
Commercial Lending | Multifamily Residential | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	4,572	4,669
Commercial Lending | Construction and land
Nonaccrual and Past Due Loans
Loans held-for-investment	666,162	663,868
Commercial Lending | Construction and land | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	653,919	650,617
Commercial Lending | Construction and land | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	927	13,251
Commercial Lending | Construction and land | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	927	13,251
Commercial Lending | Construction and land | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	0	0
Commercial Lending | Construction and land | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	11,316	0
Commercial Lending | Total CRE
Nonaccrual and Past Due Loans
Loans held-for-investment	20,274,944	20,464,112
Commercial Lending | Total CRE | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	20,249,128	20,418,829
Commercial Lending | Total CRE | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	7,498	17,365
Commercial Lending | Total CRE | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	5,335	15,567
Commercial Lending | Total CRE | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	2,163	1,798
Commercial Lending | Total CRE | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	18,318	27,918
Consumer Lending
Nonaccrual and Past Due Loans
Loans held-for-investment	16,054,535	15,165,591
Consumer Lending | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	15,925,592	15,057,686
Consumer Lending | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	74,408	69,985
Consumer Lending | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	44,329	44,674
Consumer Lending | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	30,079	25,311
Consumer Lending | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	54,535	37,920
Consumer Lending | Single-Family Residential
Nonaccrual and Past Due Loans
Loans held-for-investment	14,175,446	13,383,060
Consumer Lending | Single-Family Residential | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	14,088,086	13,313,455
Consumer Lending | Single-Family Residential | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	54,937	45,228
Consumer Lending | Single-Family Residential | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	32,841	29,285
Consumer Lending | Single-Family Residential | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	22,096	15,943
Consumer Lending | Single-Family Residential | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	32,423	24,377
Consumer Lending | HELOCs
Nonaccrual and Past Due Loans
Loans held-for-investment	1,811,628	1,722,204
Consumer Lending | HELOCs | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	1,770,218	1,687,301
Consumer Lending | HELOCs | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	19,364	21,492
Consumer Lending | HELOCs | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	11,396	12,266
Consumer Lending | HELOCs | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	7,968	9,226
Consumer Lending | HELOCs | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	22,046	13,411
Consumer Lending | Total residential mortgage
Nonaccrual and Past Due Loans
Loans held-for-investment	15,987,074	15,105,264
Consumer Lending | Total residential mortgage | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	15,858,304	15,000,756
Consumer Lending | Total residential mortgage | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	74,301	66,720
Consumer Lending | Total residential mortgage | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	44,237	41,551
Consumer Lending | Total residential mortgage | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	30,064	25,169
Consumer Lending | Total residential mortgage | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	54,469	37,788
Consumer Lending | Other consumer
Nonaccrual and Past Due Loans
Loans held-for-investment	67,461	60,327
Consumer Lending | Other consumer | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	67,288	56,930
Consumer Lending | Other consumer | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	107	3,265
Consumer Lending | Other consumer | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	92	3,123
Consumer Lending | Other consumer | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	15	142
Consumer Lending | Other consumer | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	$ 66	$ 132