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Allowance for Credit Losses on Loans and Leases - Activity in the Allowance for Loan and Lease Losses (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance, beginning of period | $ 1,168 | $ 1,215 | $ 1,201 | $ 992 | $ 992
Charge-offs | (140) | (354) | (264) | (445) |
Recoveries | 23 | 5 | 32 | 14 |
Provision for (recovery of) credit losses on loans and leases | 55 | 402 | 137 | 707 |
Balance, end of period | 1,106 | 1,268 | 1,106 | 1,268 | 1,201
Loans and leases held for investment: | Multi-family |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance, beginning of period | 609 | 469 | 639 | 307 | 307
Charge-offs | (105) | (76) | (185) | (87) | (308)
Recoveries | 9 | 0 | 9 | 1 |
Provision for (recovery of) credit losses on loans and leases | 25 | 225 | 75 | 397 |
Balance, end of period | 538 | 618 | 538 | 618 | 639
Loans and leases held for investment: | Commercial Real Estate |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance, beginning of period | 289 | 482 | 304 | 402 | 402
Charge-offs | (20) | (237) | (22) | (301) | (466)
Recoveries | 7 | 0 | 7 | 0 |
Provision for (recovery of) credit losses on loans and leases | 42 | 126 | 29 | 270 |
Balance, end of period | 318 | 371 | 318 | 371 | 304
Loans and leases held for investment: | One-to-Four Family First Mortgage |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance, beginning of period | 37 | 42 | 39 | 47 | 47
Charge-offs | (1) | (1) | (2) | (1) | (8)
Recoveries | 0 | 0 | 0 | 0 |
Provision for (recovery of) credit losses on loans and leases | (3) | (1) | (4) | (6) |
Balance, end of period | 33 | 40 | 33 | 40 | 39
Loans and leases held for investment: | Commercial and Industrial |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (41) |  | (136)
Other |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance, beginning of period | 66 | 65 | 68 | 102 | 102
Charge-offs | (7) | (5) | (14) | (10) |
Recoveries | 3 | 1 | 6 | 2 |
Provision for (recovery of) credit losses on loans and leases | (5) | 5 | (3) | (28) |
Balance, end of period | 57 | 66 | 57 | 66 | 68
Other | Commercial and Industrial |  |  |  |  |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance, beginning of period | 167 | 157 | 151 | 134 | 134
Charge-offs | (7) | (35) | (41) | (46) |
Recoveries | 4 | 4 | 10 | 11 |
Provision for (recovery of) credit losses on loans and leases | (4) | 47 | 40 | 74 |
Balance, end of period | $ 160 | $ 173 | $ 160 | $ 173 | $ 151

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
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