XML 88 R76.htm IDEA: XBRL DOCUMENT
v3.23.2

Mortgage Servicing Rights - Summary of Income and Fees (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023
Servicing Assets at Fair Value [Line Items] |  |
Decrease in MSR fair value due to pay-offs, pay-downs, run-off, model changes and other | $ (16) | $ (34)
Changes in fair value due to interest rate risk | 21 | 2
Residential first mortgage loans |  |
Servicing Assets at Fair Value [Line Items] |  |
Servicing fees, ancillary income and late fees | 54 | 110
Decrease in MSR fair value due to pay-offs, pay-downs, run-off, model changes and other | (16) | (34)
Changes in fair value due to interest rate risk | 21 | 2
Gain on MSR derivatives | (35) | (32)
Net transaction costs | 2 | 1
Total return (loss) included in net return on mortgage servicing rights | 26 | 47
Residential first mortgage loans | Loan administration income on mortgage loans subserviced |  |
Servicing Assets at Fair Value [Line Items] |  |
Servicing fees, ancillary income and late fees | 38 | 74
Charges on subserviced custodial balances | (40) | (69)
Other servicing charges | (1) | (2)
Total income on mortgage loans subserviced, included in loan administration | $ (3) | $ 3

X
- Definition The total amount of other servicing charges earned on loans serviced and subserviced for others during the period for which results of operations are presented. + References No definition available. + Details
Name: | fbc_OtherServicingChargesGeneratedbyServicingFinancialAssetsAmount
Namespace Prefix: | fbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The total amount of income earned on loans serviced and subserviced for others during the period for which results of operations are presented. + References No definition available. + Details
Name: | fbc_ServicingAssetatFairValueIncomeAmount
Namespace Prefix: | fbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total amount of net transaction costs earned on loans serviced and subserviced for others during the period for which results of operations are presented. + References No definition available. + Details
Name: | fbc_ServicingAssetatFairValueNetTransactionCosts
Namespace Prefix: | fbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Subservicing Asset At Fair Value, Charges On Subserviced Escrow Balances + References No definition available. + Details
Name: | fbc_SubservicingAssetAtFairValueChargesOnSubservicedEscrowBalances
Namespace Prefix: | fbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of income earned from subservicing an asset at fair value. + References No definition available. + Details
Name: | fbc_SubservicingAssetatFairValueIncomeAmount
Namespace Prefix: | fbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of contractually specified servicing fee, late fee, and ancillary fee recognized as income for servicing asset and servicing liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-2 + Details
Name: | us-gaap_ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gain (loss) incurred in hedging activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + Details
Name: | us-gaap_GainLossOnOilAndGasHedgingActivity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) from changes in fair value classified as other for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(4)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-3 + Details
Name: | us-gaap_ServicingAssetAtFairValueOtherChangesInFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) in the fair value of servicing assets that are subsequently measured at fair value. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-3 + Details
Name: | us-gaap_ServicingAssetAtFairValuePeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
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 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(4)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481229/860-50-50-4 + Details
Name: | us-gaap_ServicingAssetsAtFairValueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_FirstMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=fbc_NetLoanAdministrationIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |