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Loans Receivable and Allowance for Credit Losses - Aging Analysis on Loans Held-for-Investment (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | $ 93,125 | $ 99,526
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 48,918,048 | 48,202,430
Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 48,769,743 | 48,040,733
Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 55,180 | 62,171
Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 29,991 | 42,677
Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 25,189 | 19,494
Commercial lending |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 63,174 | 73,841
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 35,074,650 | 34,780,453
Commercial lending | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 34,992,236 | 34,682,072
Commercial lending | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 19,240 | 24,540
Commercial lending | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 6,453 | 21,345
Commercial lending | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 12,787 | 3,195
Commercial lending | Commercial and industrial (“C&I”) |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 43,747 | 50,428
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 15,641,840 | 15,711,095
Commercial lending | Commercial and industrial (“C&I”) | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 15,589,505 | 15,651,312
Commercial lending | Commercial and industrial (“C&I”) | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 8,588 | 9,355
Commercial lending | Commercial and industrial (“C&I”) | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 4,758 | 6,482
Commercial lending | Commercial and industrial (“C&I”) | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 3,830 | 2,873
Commercial lending | CRE |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 19,268 | 23,244
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 14,019,136 | 13,857,870
Commercial lending | CRE | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 13,998,080 | 13,820,441
Commercial lending | CRE | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,788 | 14,185
Commercial lending | CRE | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,304 | 14,185
Commercial lending | CRE | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 484 | 0
Commercial lending | Real estate loan | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 159 | 169
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 4,682,280 | 4,573,068
Commercial lending | Real estate loan | Current Accruing Loans | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 4,681,411 | 4,571,899
Commercial lending | Real estate loan | Total Accruing Past Due Loans | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 710 | 1,000
Commercial lending | Real estate loan | Accruing Loans 30-59 Days Past Due | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 391 | 678
Commercial lending | Real estate loan | Accruing Loans 60-89 Days Past Due | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 319 | 322
Commercial lending | Construction and land |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 0 | 0
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 731,394 | 638,420
Commercial lending | Construction and land | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 723,240 | 638,420
Commercial lending | Construction and land | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 8,154 | 0
Commercial lending | Construction and land | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 0 | 0
Commercial lending | Construction and land | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 8,154 | 0
Commercial lending | Total CRE |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 19,427 | 23,413
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 19,432,810 | 19,069,358
Commercial lending | Total CRE | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 19,402,731 | 19,030,760
Commercial lending | Total CRE | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 10,652 | 15,185
Commercial lending | Total CRE | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,695 | 14,863
Commercial lending | Total CRE | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 8,957 | 322
Consumer lending |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 29,951 | 25,685
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 13,843,398 | 13,421,977
Consumer lending | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 13,777,507 | 13,358,661
Consumer lending | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 35,940 | 37,631
Consumer lending | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 23,538 | 21,332
Consumer lending | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 12,402 | 16,299
Consumer lending | Real estate loan | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 20,540 | 14,240
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 11,786,998 | 11,223,027
Consumer lending | Real estate loan | Current Accruing Loans | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 11,740,953 | 11,183,134
Consumer lending | Real estate loan | Total Accruing Past Due Loans | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 25,505 | 25,653
Consumer lending | Real estate loan | Accruing Loans 30-59 Days Past Due | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 17,964 | 13,523
Consumer lending | Real estate loan | Accruing Loans 60-89 Days Past Due | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 7,541 | 12,130
Consumer lending | HELOCs |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 9,045 | 11,346
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,988,881 | 2,122,655
Consumer lending | HELOCs | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,969,546 | 2,102,523
Consumer lending | HELOCs | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 10,290 | 8,786
Consumer lending | HELOCs | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 5,485 | 7,700
Consumer lending | HELOCs | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 4,805 | 1,086
Consumer lending | Total residential mortgage |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 29,585 | 25,586
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 13,775,879 | 13,345,682
Consumer lending | Total residential mortgage | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 13,710,499 | 13,285,657
Consumer lending | Total residential mortgage | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 35,795 | 34,439
Consumer lending | Total residential mortgage | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 23,449 | 21,223
Consumer lending | Total residential mortgage | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 12,346 | 13,216
Consumer lending | Other consumer |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 366 | 99
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 67,519 | 76,295
Consumer lending | Other consumer | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 67,008 | 73,004
Consumer lending | Other consumer | Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 145 | 3,192
Consumer lending | Other consumer | Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 89 | 109
Consumer lending | Other consumer | Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | $ 56 | $ 3,083

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