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Loans Receivable and Allowance for Credit Losses - Aging Analysis on Loans Held-for-Investment (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Current, Past Due or Nonaccrual Loans |  |
Total | $ 51,992,504 | $ 52,210,782
Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 51,736,401 | 51,984,909
Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 107,924 | 122,999
Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 71,501 | 88,791
Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 36,423 | 34,208
Nonperforming Financial Instruments |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 148,179 | 102,874
Commercial lending |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 36,644,030 | 37,045,191
Commercial lending | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 36,504,760 | 36,927,223
Commercial lending | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 38,420 | 53,014
Commercial lending | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 23,653 | 44,117
Commercial lending | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 14,767 | 8,897
Commercial lending | Nonperforming Financial Instruments |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 100,850 | 64,954
Commercial lending | Commercial and industrial (“C&I”) |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 16,350,191 | 16,581,079
Commercial lending | Commercial and industrial (“C&I”) | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 16,281,903 | 16,508,394
Commercial lending | Commercial and industrial (“C&I”) | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 19,326 | 35,649
Commercial lending | Commercial and industrial (“C&I”) | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 4,559 | 28,550
Commercial lending | Commercial and industrial (“C&I”) | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 14,767 | 7,099
Commercial lending | Commercial and industrial (“C&I”) | Nonperforming Financial Instruments |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 48,962 | 37,036
Commercial lending | CRE |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 14,609,655 | 14,777,081
Commercial lending | CRE | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 14,555,923 | 14,750,315
Commercial lending | CRE | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 18,726 | 3,517
Commercial lending | CRE | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 18,726 | 1,719
Commercial lending | CRE | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 0 | 1,798
Commercial lending | CRE | Nonperforming Financial Instruments |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 35,006 | 23,249
Commercial lending | Real estate loan | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 5,010,245 | 5,023,163
Commercial lending | Real estate loan | Current Accruing Loans | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 5,005,231 | 5,017,897
Commercial lending | Real estate loan | Total Accruing Past Due Loans | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 368 | 597
Commercial lending | Real estate loan | Accruing Loans 30-59 Days Past Due | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 368 | 597
Commercial lending | Real estate loan | Accruing Loans 60-89 Days Past Due | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 0 | 0
Commercial lending | Real estate loan | Nonperforming Financial Instruments | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 4,646 | 4,669
Commercial lending | Construction and land |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 673,939 | 663,868
Commercial lending | Construction and land | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 661,703 | 650,617
Commercial lending | Construction and land | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 0 | 13,251
Commercial lending | Construction and land | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 0 | 13,251
Commercial lending | Construction and land | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 0 | 0
Commercial lending | Construction and land | Nonperforming Financial Instruments |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 12,236 | 0
Commercial lending | Total CRE |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 20,293,839 | 20,464,112
Commercial lending | Total CRE | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 20,222,857 | 20,418,829
Commercial lending | Total CRE | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 19,094 | 17,365
Commercial lending | Total CRE | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 19,094 | 15,567
Commercial lending | Total CRE | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 0 | 1,798
Commercial lending | Total CRE | Nonperforming Financial Instruments |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 51,888 | 27,918
Consumer lending |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 15,348,474 | 15,165,591
Consumer lending | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 15,231,641 | 15,057,686
Consumer lending | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 69,504 | 69,985
Consumer lending | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 47,848 | 44,674
Consumer lending | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 21,656 | 25,311
Consumer lending | Nonperforming Financial Instruments |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 47,329 | 37,920
Consumer lending | Real estate loan | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 13,563,738 | 13,383,060
Consumer lending | Real estate loan | Current Accruing Loans | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 13,478,789 | 13,313,455
Consumer lending | Real estate loan | Total Accruing Past Due Loans | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 49,280 | 45,228
Consumer lending | Real estate loan | Accruing Loans 30-59 Days Past Due | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 33,911 | 29,285
Consumer lending | Real estate loan | Accruing Loans 60-89 Days Past Due | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 15,369 | 15,943
Consumer lending | Real estate loan | Nonperforming Financial Instruments | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 35,669 | 24,377
Consumer lending | HELOCs |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 1,731,233 | 1,722,204
Consumer lending | HELOCs | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 1,699,628 | 1,687,301
Consumer lending | HELOCs | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 20,107 | 21,492
Consumer lending | HELOCs | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 13,877 | 12,266
Consumer lending | HELOCs | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 6,230 | 9,226
Consumer lending | HELOCs | Nonperforming Financial Instruments |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 11,498 | 13,411
Consumer lending | Total residential mortgage |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 15,294,971 | 15,105,264
Consumer lending | Total residential mortgage | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 15,178,417 | 15,000,756
Consumer lending | Total residential mortgage | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 69,387 | 66,720
Consumer lending | Total residential mortgage | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 47,788 | 41,551
Consumer lending | Total residential mortgage | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 21,599 | 25,169
Consumer lending | Total residential mortgage | Nonperforming Financial Instruments |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 47,167 | 37,788
Consumer lending | Other consumer |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 53,503 | 60,327
Consumer lending | Other consumer | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 53,224 | 56,930
Consumer lending | Other consumer | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 117 | 3,265
Consumer lending | Other consumer | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 60 | 3,123
Consumer lending | Other consumer | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Total | 57 | 142
Consumer lending | Other consumer | Nonperforming Financial Instruments |  |
Current, Past Due or Nonaccrual Loans |  |
Total | $ 162 | $ 132

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