XML 88 R63.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Business Combinations - Pro Forma Information (Details) - Flagstar Bancorp - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Business Acquisition [Line Items] |  |
Net interest income | $ 2,278 | $ 2,208
Non-interest income | 650 | 1,105
Net income | 804 | 1,207
Net income available to common stockholders | $ 771 | $ 1,174

X
- Definition Business Acquisitions, Pro Forma Net Income Available To Common Stockholders + References No definition available. + Details
Name: | fbc_BusinessAcquisitionsProFormaNetIncomeAvailableToCommonStockholders
Namespace Prefix: | fbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Acquisitions, Pro Forma, Net Income Interest + References No definition available. + Details
Name: | fbc_BusinessAcquisitionsProFormaNetIncomeInterest
Namespace Prefix: | fbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Acquisitions, Pro Forma Non Interest Income + References No definition available. + Details
Name: | fbc_BusinessAcquisitionsProFormaNonInterestIncome
Namespace Prefix: | fbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-5 + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=fbc_FlagstarBancorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |