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Loans Receivable and Allowance for Credit Losses - Aging Analysis on Loans Held-for-Investment (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
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Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | $ 115,533 | $ 99,526
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 49,828,364 | 48,202,430
Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 49,624,742 | 48,040,733
Total Accruing Past Due Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 88,089 | 62,171
Accruing Loans 30-59 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 73,315 | 42,677
Accruing Loans 60-89 Days Past Due |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 14,774 | 19,494
Commercial lending |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 82,477 | 73,841
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 35,588,717 | 34,780,453
Commercial lending | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 35,462,899 | 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 | 43,341 | 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 | 40,950 | 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 | 2,391 | 3,195
Commercial lending | Commercial and industrial (“C&I”) |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 61,879 | 50,428
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 15,670,084 | 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 | 15,602,567 | 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 | 5,638 | 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 | 3,247 | 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 | 2,391 | 2,873
Commercial lending | CRE |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 15,895 | 23,244
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 14,373,385 | 13,857,870
Commercial lending | CRE | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 14,342,301 | 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 | 15,189 | 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 | 15,189 | 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 | 0 | 0
Commercial lending | Real estate loan | Multifamily residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 4,703 | 169
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 4,764,180 | 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 | 4,758,515 | 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 | 962 | 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 | 962 | 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 | 0 | 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 | 781,068 | 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 | 759,516 | 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 | 21,552 | 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 | 21,552 | 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 | 0 | 0
Commercial lending | Total CRE |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 20,598 | 23,413
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 19,918,633 | 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 | 19,860,332 | 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 | 37,703 | 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 | 37,703 | 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 | 0 | 322
Consumer lending |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 33,056 | 25,685
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 14,239,647 | 13,421,977
Consumer lending | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 14,161,843 | 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 | 44,748 | 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 | 32,365 | 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 | 12,383 | 16,299
Consumer lending | Real estate loan | Single-family residential |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 21,981 | 14,240
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 12,308,613 | 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 | 12,254,680 | 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 | 31,952 | 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 | 21,752 | 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 | 10,200 | 12,130
Consumer lending | HELOCs |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 11,051 | 11,346
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,862,928 | 2,122,655
Consumer lending | HELOCs | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 1,840,064 | 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 | 11,813 | 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 | 10,471 | 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 | 1,342 | 1,086
Consumer lending | Total residential mortgage |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 33,032 | 25,586
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 14,171,541 | 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 | 14,094,744 | 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 | 43,765 | 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 | 32,223 | 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 | 11,542 | 13,216
Consumer lending | Other consumer |  |
Current, Past Due or Nonaccrual Loans |  |
Total Nonaccrual Loans | 24 | 99
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 68,106 | 76,295
Consumer lending | Other consumer | Current Accruing Loans |  |
Current, Past Due or Nonaccrual Loans |  |
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months | 67,099 | 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 | 983 | 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 | 142 | 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 | $ 841 | $ 3,083

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