Loans Receivable and Allowance for Credit Losses - Schedule Of Aging Analysis Of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Nonaccrual and Past Due Loans
Loans held-for-investment	$ 56,878,172	$ 53,726,637
Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	56,562,628	53,462,858
Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	149,702	104,761
Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	107,134	55,354
Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	42,568	49,407
Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	165,842	159,018
Commercial Lending
Nonaccrual and Past Due Loans
Loans held-for-investment	39,912,528	37,672,102
Commercial Lending | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	39,752,345	37,537,266
Commercial Lending | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	41,291	30,353
Commercial Lending | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	37,740	11,025
Commercial Lending | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	3,551	19,328
Commercial Lending | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	118,892	104,483
Commercial Lending | C&I
Nonaccrual and Past Due Loans
Loans held-for-investment	18,650,755	17,397,158
Commercial Lending | C&I | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	18,572,467	17,288,138
Commercial Lending | C&I | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	26,044	22,855
Commercial Lending | C&I | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	25,962	5,690
Commercial Lending | C&I | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	82	17,165
Commercial Lending | C&I | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	52,244	86,165
Commercial Lending | CRE
Nonaccrual and Past Due Loans
Loans held-for-investment	15,407,088	14,655,340
Commercial Lending | CRE | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	15,354,548	14,647,270
Commercial Lending | CRE | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	13,994	5,640
Commercial Lending | CRE | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	10,525	3,755
Commercial Lending | CRE | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	3,469	1,885
Commercial Lending | CRE | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	38,546	2,430
Commercial Lending | Multifamily Residential
Nonaccrual and Past Due Loans
Loans held-for-investment	5,112,328	4,953,442
Commercial Lending | Multifamily Residential | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	5,110,783	4,947,939
Commercial Lending | Multifamily Residential | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	1,253	931
Commercial Lending | Multifamily Residential | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	1,253	653
Commercial Lending | Multifamily Residential | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	0	278
Commercial Lending | Multifamily Residential | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	292	4,572
Commercial Lending | Construction and land
Nonaccrual and Past Due Loans
Loans held-for-investment	742,357	666,162
Commercial Lending | Construction and land | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	714,547	653,919
Commercial Lending | Construction and land | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	0	927
Commercial Lending | Construction and land | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	0	927
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	27,810	11,316
Commercial Lending | Total CRE
Nonaccrual and Past Due Loans
Loans held-for-investment	21,261,773	20,274,944
Commercial Lending | Total CRE | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	21,179,878	20,249,128
Commercial Lending | Total CRE | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	15,247	7,498
Commercial Lending | Total CRE | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	11,778	5,335
Commercial Lending | Total CRE | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	3,469	2,163
Commercial Lending | Total CRE | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	66,648	18,318
Consumer Lending
Nonaccrual and Past Due Loans
Loans held-for-investment	16,965,644	16,054,535
Consumer Lending | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	16,810,283	15,925,592
Consumer Lending | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	108,411	74,408
Consumer Lending | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	69,394	44,329
Consumer Lending | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	39,017	30,079
Consumer Lending | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	46,950	54,535
Consumer Lending | Single-Family Residential
Nonaccrual and Past Due Loans
Loans held-for-investment	15,002,549	14,175,446
Consumer Lending | Single-Family Residential | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	14,899,224	14,088,086
Consumer Lending | Single-Family Residential | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	73,684	54,937
Consumer Lending | Single-Family Residential | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	46,010	32,841
Consumer Lending | Single-Family Residential | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	27,674	22,096
Consumer Lending | Single-Family Residential | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	29,641	32,423
Consumer Lending | HELOCs
Nonaccrual and Past Due Loans
Loans held-for-investment	1,911,897	1,811,628
Consumer Lending | HELOCs | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	1,860,080	1,770,218
Consumer Lending | HELOCs | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	34,650	19,364
Consumer Lending | HELOCs | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	23,328	11,396
Consumer Lending | HELOCs | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	11,322	7,968
Consumer Lending | HELOCs | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	17,167	22,046
Consumer Lending | Total residential mortgage
Nonaccrual and Past Due Loans
Loans held-for-investment	16,914,446	15,987,074
Consumer Lending | Total residential mortgage | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	16,759,304	15,858,304
Consumer Lending | Total residential mortgage | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	108,334	74,301
Consumer Lending | Total residential mortgage | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	69,338	44,237
Consumer Lending | Total residential mortgage | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	38,996	30,064
Consumer Lending | Total residential mortgage | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	46,808	54,469
Consumer Lending | Other consumer
Nonaccrual and Past Due Loans
Loans held-for-investment	51,198	67,461
Consumer Lending | Other consumer | Current Accruing Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	50,979	67,288
Consumer Lending | Other consumer | Total Accruing Past Due Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	77	107
Consumer Lending | Other consumer | Accruing Loans 30-59 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	56	92
Consumer Lending | Other consumer | Accruing Loans 60-89 Days Past Due
Nonaccrual and Past Due Loans
Loans held-for-investment	21	15
Consumer Lending | Other consumer | Total Nonaccrual Loans
Nonaccrual and Past Due Loans
Loans held-for-investment	$ 142	$ 66