XML 197 R93.htm IDEA: XBRL DOCUMENT
v3.23.1

Fair Value Measures - Financial Instruments Carried at Fair Value (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets: |  |
Total debt securities available for sale | $ 7,599 | $ 9,060
Total securities | 7,613 | 9,074
Mortgage servicing rights | 1,034 | 1,033
Total debt securities available for sale |  |
Assets: |  |
Total debt securities available for sale | 7,599 | 9,060
Total mortgage-related debt securities |  |
Assets: |  |
Total debt securities available for sale | 4,716 | 4,789
Total mortgage-related debt securities | GSE certificates |  |
Assets: |  |
Total debt securities available for sale | 1,246 | 1,297
Total mortgage-related debt securities | GSE CMOs |  |
Assets: |  |
Total debt securities available for sale | 3,282 | 3,301
Total mortgage-related debt securities | Private Label CMOs |  |
Assets: |  |
Total debt securities available for sale | 188 | 191
Total other debt securities |  |
Assets: |  |
Total debt securities available for sale | 2,883 | 4,271
Total other debt securities | U. S. Treasury obligations |  |
Assets: |  |
Total debt securities available for sale | 0 | 1,487
Total other debt securities | GSE debentures |  |
Assets: |  |
Total debt securities available for sale | 1,589 | 1,398
Total other debt securities | Asset-backed securities |  |
Assets: |  |
Total debt securities available for sale | 335 | 361
Total other debt securities | Municipal bonds |  |
Assets: |  |
Total debt securities available for sale | 18 | 30
Total other debt securities | Corporate bonds |  |
Assets: |  |
Total debt securities available for sale | 833 | 885
Total other debt securities | Foreign notes |  |
Assets: |  |
Total debt securities available for sale | 19 | 20
Total other debt securities | Capital trust notes |  |
Assets: |  |
Total debt securities available for sale | 89 | 90
Recurring |  |
Assets: |  |
Total securities | 7,613 | 9,074
Residential first mortgage loans | 1,305 | 1,115
Mortgage servicing rights | 1,034 | 1,033
Total assets at fair value | 10,131 | 11,451
Liabilities: |  |
Total liabilities at fair value | 70 | 136
Recurring | Interest rate swaps and swaptions |  |
Assets: |  |
Derivative assets | 159 | 182
Liabilities: |  |
Derivative liabilities | 49 | 65
Recurring | Futures |  |
Assets: |  |
Derivative assets | 0 | 2
Recurring | Rate lock commitments |  |
Assets: |  |
Derivative assets | 15 | 9
Liabilities: |  |
Derivative liabilities | 7 | 10
Recurring | Mortgage-backed securities forwards |  |
Assets: |  |
Derivative assets | 5 | 36
Liabilities: |  |
Derivative liabilities | 14 | 61
Recurring | Total debt securities available for sale |  |
Assets: |  |
Total debt securities available for sale | 7,599 | 9,060
Recurring | Total mortgage-related debt securities |  |
Assets: |  |
Total debt securities available for sale | 4,716 | 4,789
Recurring | Total mortgage-related debt securities | GSE certificates |  |
Assets: |  |
Total debt securities available for sale | 1,246 | 1,297
Recurring | Total mortgage-related debt securities | GSE CMOs |  |
Assets: |  |
Total debt securities available for sale | 3,282 | 3,301
Recurring | Total mortgage-related debt securities | Private Label CMOs |  |
Assets: |  |
Total debt securities available for sale | 188 | 191
Recurring | Total other debt securities |  |
Assets: |  |
Total debt securities available for sale | 2,883 | 4,271
Recurring | Total other debt securities | U. S. Treasury obligations |  |
Assets: |  |
Total debt securities available for sale |  | 1,487
Recurring | Total other debt securities | GSE debentures |  |
Assets: |  |
Total debt securities available for sale | 1,589 | 1,398
Recurring | Total other debt securities | Asset-backed securities |  |
Assets: |  |
Total debt securities available for sale | 335 | 361
Recurring | Total other debt securities | Municipal bonds |  |
Assets: |  |
Total debt securities available for sale | 18 | 30
Recurring | Total other debt securities | Corporate bonds |  |
Assets: |  |
Total debt securities available for sale | 833 | 885
Recurring | Total other debt securities | Foreign notes |  |
Assets: |  |
Total debt securities available for sale | 19 | 20
Recurring | Total other debt securities | Capital trust notes |  |
Assets: |  |
Total debt securities available for sale | 89 | 90
Recurring | Total equity securities |  |
Assets: |  |
Total equity securities | 14 | 14
Recurring | Total equity securities | Mutual funds and common stock |  |
Assets: |  |
Total equity securities | 14 | 14
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Total securities | 0 | 1,487
Residential first mortgage loans | 0 | 0
Mortgage servicing rights | 0 | 0
Total assets at fair value | 0 | 1,487
Liabilities: |  |
Total liabilities at fair value | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swaps and swaptions |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Futures |  |
Assets: |  |
Derivative assets | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Rate lock commitments |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities forwards |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total debt securities available for sale |  |
Assets: |  |
Total debt securities available for sale | 0 | 1,487
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total mortgage-related debt securities |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total mortgage-related debt securities | GSE certificates |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total mortgage-related debt securities | GSE CMOs |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total mortgage-related debt securities | Private Label CMOs |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total other debt securities |  |
Assets: |  |
Total debt securities available for sale | 0 | 1,487
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total other debt securities | U. S. Treasury obligations |  |
Assets: |  |
Total debt securities available for sale |  | 1,487
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total other debt securities | GSE debentures |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total other debt securities | Asset-backed securities |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total other debt securities | Municipal bonds |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total other debt securities | Corporate bonds |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total other debt securities | Foreign notes |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total other debt securities | Capital trust notes |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total equity securities |  |
Assets: |  |
Total equity securities | 0 | 0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Total equity securities | Mutual funds and common stock |  |
Assets: |  |
Total equity securities | 0 | 0
Recurring | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Total securities | 7,613 | 7,587
Residential first mortgage loans | 1,305 | 1,115
Mortgage servicing rights | 0 | 0
Total assets at fair value | 9,082 | 8,922
Liabilities: |  |
Total liabilities at fair value | 63 | 126
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps and swaptions |  |
Assets: |  |
Derivative assets | 159 | 182
Liabilities: |  |
Derivative liabilities | 49 | 65
Recurring | Significant Other Observable Inputs (Level 2) | Futures |  |
Assets: |  |
Derivative assets | 0 | 2
Recurring | Significant Other Observable Inputs (Level 2) | Rate lock commitments |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities forwards |  |
Assets: |  |
Derivative assets | 5 | 36
Liabilities: |  |
Derivative liabilities | 14 | 61
Recurring | Significant Other Observable Inputs (Level 2) | Total debt securities available for sale |  |
Assets: |  |
Total debt securities available for sale | 7,599 | 7,573
Recurring | Significant Other Observable Inputs (Level 2) | Total mortgage-related debt securities |  |
Assets: |  |
Total debt securities available for sale | 4,716 | 4,789
Recurring | Significant Other Observable Inputs (Level 2) | Total mortgage-related debt securities | GSE certificates |  |
Assets: |  |
Total debt securities available for sale | 1,246 | 1,297
Recurring | Significant Other Observable Inputs (Level 2) | Total mortgage-related debt securities | GSE CMOs |  |
Assets: |  |
Total debt securities available for sale | 3,282 | 3,301
Recurring | Significant Other Observable Inputs (Level 2) | Total mortgage-related debt securities | Private Label CMOs |  |
Assets: |  |
Total debt securities available for sale | 188 | 191
Recurring | Significant Other Observable Inputs (Level 2) | Total other debt securities |  |
Assets: |  |
Total debt securities available for sale | 2,883 | 2,784
Recurring | Significant Other Observable Inputs (Level 2) | Total other debt securities | U. S. Treasury obligations |  |
Assets: |  |
Total debt securities available for sale |  | 0
Recurring | Significant Other Observable Inputs (Level 2) | Total other debt securities | GSE debentures |  |
Assets: |  |
Total debt securities available for sale | 1,589 | 1,398
Recurring | Significant Other Observable Inputs (Level 2) | Total other debt securities | Asset-backed securities |  |
Assets: |  |
Total debt securities available for sale | 335 | 361
Recurring | Significant Other Observable Inputs (Level 2) | Total other debt securities | Municipal bonds |  |
Assets: |  |
Total debt securities available for sale | 18 | 30
Recurring | Significant Other Observable Inputs (Level 2) | Total other debt securities | Corporate bonds |  |
Assets: |  |
Total debt securities available for sale | 833 | 885
Recurring | Significant Other Observable Inputs (Level 2) | Total other debt securities | Foreign notes |  |
Assets: |  |
Total debt securities available for sale | 19 | 20
Recurring | Significant Other Observable Inputs (Level 2) | Total other debt securities | Capital trust notes |  |
Assets: |  |
Total debt securities available for sale | 89 | 90
Recurring | Significant Other Observable Inputs (Level 2) | Total equity securities |  |
Assets: |  |
Total equity securities | 14 | 14
Recurring | Significant Other Observable Inputs (Level 2) | Total equity securities | Mutual funds and common stock |  |
Assets: |  |
Total equity securities | 14 | 14
Recurring | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Total securities | 0 | 0
Residential first mortgage loans | 0 | 0
Mortgage servicing rights | 1,034 | 1,033
Total assets at fair value | 1,049 | 1,042
Liabilities: |  |
Total liabilities at fair value | 7 | 10
Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swaps and swaptions |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Futures |  |
Assets: |  |
Derivative assets | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Rate lock commitments |  |
Assets: |  |
Derivative assets | 15 | 9
Liabilities: |  |
Derivative liabilities | 7 | 10
Recurring | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities forwards |  |
Assets: |  |
Derivative assets | 0 | 0
Liabilities: |  |
Derivative liabilities | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total debt securities available for sale |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total mortgage-related debt securities |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total mortgage-related debt securities | GSE certificates |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total mortgage-related debt securities | GSE CMOs |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total mortgage-related debt securities | Private Label CMOs |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total other debt securities |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total other debt securities | U. S. Treasury obligations |  |
Assets: |  |
Total debt securities available for sale |  | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total other debt securities | GSE debentures |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total other debt securities | Asset-backed securities |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total other debt securities | Municipal bonds |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total other debt securities | Corporate bonds |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total other debt securities | Foreign notes |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total other debt securities | Capital trust notes |  |
Assets: |  |
Total debt securities available for sale | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total equity securities |  |
Assets: |  |
Total equity securities | 0 | 0
Recurring | Significant Unobservable Inputs (Level 3) | Total equity securities | Mutual funds and common stock |  |
Assets: |  |
Total equity securities | $ 0 | $ 0

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
Name: | us-gaap_DerivativeAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 + Details
Name: | us-gaap_DerivativeLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI https://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables. + References No definition available. + Details
Name: | us-gaap_LoansHeldForSaleFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
Name: | us-gaap_MarketableSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=128311188&loc=d3e122625-111746 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
Name: | us-gaap_ServicingAssetAtFairValueAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=fbc_MortgageBackedSecuritiesAndOtherSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_MortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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

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

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=fbc_InterestRateSwapsandSwaptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_FutureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateLockCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_MortgageBackedSecuritiesOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |