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Loans and Leases - Portfolio of Loans Held for Investment by Credit Quality Indicator (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans | [1] | $ 69,001 |  | $ 45,738 |
Multi-Family |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 38,130 |  | 34,628 |
Multi-Family | Pass |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 36,622 |  | 33,035 |
Multi-Family | Special Mention |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 864 |  | 982 |
Multi-Family | Substandard |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 644 |  | 611 |
Commercial Real Estate |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 8,526 |  | 6,701 |
Commercial Real Estate | Pass |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 7,871 |  | 5,876 |
Commercial Real Estate | Special Mention |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 230 |  | 644 |
Commercial Real Estate | Substandard |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 425 |  | 181 |
One-to-Four Family |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 5,821 |  | 160 |
One-to-Four Family | Pass |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 5,710 |  | 137 |
One-to-Four Family | Special Mention |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 8 |  | 14 |
One-to-Four Family | Substandard |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 103 |  | 9 |
Acquisition, Development, and Construction |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 1,996 |  | 209 |
Acquisition, Development, and Construction | Pass |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 1,992 |  | 204 |
Acquisition, Development, and Construction | Special Mention |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 4 |  | 5 |
Mortgage Receivable |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans | [1] | 54,473 |  | 41,698 |
Mortgage Receivable | Pass |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 52,195 |  | 39,252 |
Mortgage Receivable | Special Mention |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 1,106 |  | 1,645 |
Mortgage Receivable | Substandard |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 1,172 |  | 801 |
Commercial and Industrial |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans | [3] | 12,276 | [2] | 4,034 | [4]
Commercial and Industrial | Pass |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 12,208 | [2] | 3,987 | [4]
Commercial and Industrial | Special Mention |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 18 | [2] | 2 | [4]
Commercial and Industrial | Substandard |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 50 | [2] | 45 | [4]
Other |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 2,252 |  | 6 |
Other | Pass |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 2,238 |  | 6 |
Other | Substandard |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 14 |  |  |
Total Other Loans |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 14,528 |  | 4,040 |
Total Other Loans | Pass |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 14,446 |  | 3,993 |
Total Other Loans | Special Mention |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | 18 |  | 2 |
Total Other Loans | Substandard |  |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |  |
Non-Covered Loans |  | $ 64 |  | $ 45 |
[1] | Excludes accrued interest receivable of $292 million and $199 million at December 31, 2022 and December 31, 2021, respectively, which is included in other assets in the Consolidated Statements of Condition.
[2] | Includes lease financing receivables, all of which were classified as Pass.
[3] | Includes specialty finance loans and leases of $4.4 billion and $3.5 billion, respectively, at December 31, 2022 and December 31, 2021.
[4] | Includes lease financing receivables, all of which were classified as Pass.

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