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Loans and Leases - Loans Held for Investment by Credit Quality Indicator (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Recorded Investment |  |
Total | $ 84,619 | $ 69,001
Other |  |
Financing Receivable, Recorded Investment |  |
Total | 27,911 | 14,528
Mortgage Loans |  |
Financing Receivable, Recorded Investment |  |
Total | 56,708 | 54,473
Mortgage Loans | Pass |  |
Financing Receivable, Recorded Investment |  |
Total | 51,057 | 52,195
Mortgage Loans | Special mention |  |
Financing Receivable, Recorded Investment |  |
Total | 1,192 | 1,106
Mortgage Loans | Substandard |  |
Financing Receivable, Recorded Investment |  |
Total | 4,459 | 1,172
Mortgage Loans | Doubtful |  |
Financing Receivable, Recorded Investment |  |
Total | 0 |
Mortgage Loans | Multi-family |  |
Financing Receivable, Recorded Investment |  |
Total | 37,265 | 38,130
Mortgage Loans | Multi-family | Pass |  |
Financing Receivable, Recorded Investment |  |
Total | 34,170 | 36,622
Mortgage Loans | Multi-family | Special mention |  |
Financing Receivable, Recorded Investment |  |
Total | 768 | 864
Mortgage Loans | Multi-family | Substandard |  |
Financing Receivable, Recorded Investment |  |
Total | 2,327 | 644
Mortgage Loans | Multi-family | Doubtful |  |
Financing Receivable, Recorded Investment |  |
Total | 0 |
Mortgage Loans | Commercial real estate |  |
Financing Receivable, Recorded Investment |  |
Total | 10,470 | 8,526
Mortgage Loans | Commercial real estate | Pass |  |
Financing Receivable, Recorded Investment |  |
Total | 8,734 | 7,871
Mortgage Loans | Commercial real estate | Special mention |  |
Financing Receivable, Recorded Investment |  |
Total | 367 | 230
Mortgage Loans | Commercial real estate | Substandard |  |
Financing Receivable, Recorded Investment |  |
Total | 1,369 | 425
Mortgage Loans | Commercial real estate | Doubtful |  |
Financing Receivable, Recorded Investment |  |
Total | 0 |
Mortgage Loans | One-to-four family first mortgage |  |
Financing Receivable, Recorded Investment |  |
Total | 6,061 | 5,821
Mortgage Loans | One-to-four family first mortgage | Pass |  |
Financing Receivable, Recorded Investment |  |
Total | 5,328 | 5,710
Mortgage Loans | One-to-four family first mortgage | Special mention |  |
Financing Receivable, Recorded Investment |  |
Total | 0 | 8
Mortgage Loans | One-to-four family first mortgage | Substandard |  |
Financing Receivable, Recorded Investment |  |
Total | 733 | 103
Mortgage Loans | One-to-four family first mortgage | Doubtful |  |
Financing Receivable, Recorded Investment |  |
Total | 0 |
Mortgage Loans | Acquisition, development, and construction |  |
Financing Receivable, Recorded Investment |  |
Total | 2,912 | 1,996
Mortgage Loans | Acquisition, development, and construction | Pass |  |
Financing Receivable, Recorded Investment |  |
Total | 2,825 | 1,992
Mortgage Loans | Acquisition, development, and construction | Special mention |  |
Financing Receivable, Recorded Investment |  |
Total | 57 | 4
Mortgage Loans | Acquisition, development, and construction | Substandard |  |
Financing Receivable, Recorded Investment |  |
Total | 30 | 0
Mortgage Loans | Acquisition, development, and construction | Doubtful |  |
Financing Receivable, Recorded Investment |  |
Total | 0 |
Other Loans: |  |
Financing Receivable, Recorded Investment |  |
Total | 27,911 | 14,528
Other Loans: | Pass |  |
Financing Receivable, Recorded Investment |  |
Total | 27,317 | 14,446
Other Loans: | Special mention |  |
Financing Receivable, Recorded Investment |  |
Total | 335 | 18
Other Loans: | Substandard |  |
Financing Receivable, Recorded Investment |  |
Total | 259 | 64
Other Loans: | Doubtful |  |
Financing Receivable, Recorded Investment |  |
Total | 0 |
Other Loans: | Commercial and industrial loans and lease financing |  |
Financing Receivable, Recorded Investment |  |
Total | 25,254 | 12,276
Other Loans: | Commercial and industrial loans and lease financing | Pass |  |
Financing Receivable, Recorded Investment |  |
Total | 24,683 | 12,208
Other Loans: | Commercial and industrial loans and lease financing | Special mention |  |
Financing Receivable, Recorded Investment |  |
Total | 335 | 18
Other Loans: | Commercial and industrial loans and lease financing | Substandard |  |
Financing Receivable, Recorded Investment |  |
Total | 236 | 50
Other Loans: | Commercial and industrial loans and lease financing | Doubtful |  |
Financing Receivable, Recorded Investment |  |
Total | 0 |
Other Loans: | Other |  |
Financing Receivable, Recorded Investment |  |
Total | 2,657 | 2,252
Other Loans: | Other | Pass |  |
Financing Receivable, Recorded Investment |  |
Total | 2,634 | 2,238
Other Loans: | Other | Special mention |  |
Financing Receivable, Recorded Investment |  |
Total | 0 | 0
Other Loans: | Other | Substandard |  |
Financing Receivable, Recorded Investment |  |
Total | 23 | $ 14
Other Loans: | Other | Doubtful |  |
Financing Receivable, Recorded Investment |  |
Total | $ 0 |

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