XML 146 R82.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Loans and Leases - Performance of Loans Modified in Last 12 Months (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Modified [Line Items] |  |
Total | $ 34 | $ 27
Current |  |
Financing Receivable, Modified [Line Items] |  |
Total | 18 | 8
Loans 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total | 0 | 10
90+ Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total | 16 | 9
Loans held for investment | Multi-family |  |
Financing Receivable, Modified [Line Items] |  |
Total | 2 |
Loans held for investment | Multi-family | Current |  |
Financing Receivable, Modified [Line Items] |  |
Total | 2 |
Loans held for investment | Multi-family | Loans 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total | 0 |
Loans held for investment | Multi-family | 90+ Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total | 0 |
Loans held for investment | Commercial real estate |  |
Financing Receivable, Modified [Line Items] |  |
Total | 12 | 1
Loans held for investment | Commercial real estate | Current |  |
Financing Receivable, Modified [Line Items] |  |
Total | 8 | 1
Loans held for investment | Commercial real estate | Loans 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total | 0 | 0
Loans held for investment | Commercial real estate | 90+ Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total | 4 | 0
Loans held for investment | One-to-four family first mortgage |  |
Financing Receivable, Modified [Line Items] |  |
Total | 16 | 11
Loans held for investment | One-to-four family first mortgage | Current |  |
Financing Receivable, Modified [Line Items] |  |
Total | 8 | 3
Loans held for investment | One-to-four family first mortgage | Loans 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total | 0 | 0
Loans held for investment | One-to-four family first mortgage | 90+ Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total | 8 | 8
Other loans held for investment | Commercial and industrial |  |
Financing Receivable, Modified [Line Items] |  |
Total | 4 | 13
Other loans held for investment | Commercial and industrial | Current |  |
Financing Receivable, Modified [Line Items] |  |
Total | 0 | 3
Other loans held for investment | Commercial and industrial | Loans 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total | 0 | 9
Other loans held for investment | Commercial and industrial | 90+ Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total | $ 4 | 1
Other loans held for investment | Other Consumer |  |
Financing Receivable, Modified [Line Items] |  |
Total |  | 2
Other loans held for investment | Other Consumer | Current |  |
Financing Receivable, Modified [Line Items] |  |
Total |  | 1
Other loans held for investment | Other Consumer | Loans 30-89 Days Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total |  | 1
Other loans held for investment | Other Consumer | 90+ Past Due |  |
Financing Receivable, Modified [Line Items] |  |
Total |  | $ 0

X
- Definition Amortized cost excluding accrued interest, of financing receivable 12 months after modification for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestModifiedPast12Months
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-34 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-33 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=fbc_FinancialAsset30To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fbc_MortgageLoansHeldForInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fbc_MultiFamilyLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fbc_CommercialRealEstateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fbc_OneToFourFamilyFirstMortgageLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fbc_OtherLoansHeldForInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=fbc_CommercialAndIndustrialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |