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Borrowed Funds - Junior Subordinated Debentures (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Debt Instrument |  |
Junior Subordinated Notes | $ 579 | $ 575
Capital Securities Amount Outstanding | 589 |
Flagstar Bancorp |  |
Debt Instrument |  |
Fair value adjustment | (30) |
Previously Reported |  |
Debt Instrument |  |
Junior Subordinated Notes | $ 609 | $ 608
New York Community Capital Trust V (BONUSES Units) |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 600.00% |
Junior Subordinated Notes | $ 147 |
Capital Securities Amount Outstanding | $ 141 |
New York Community Capital Trust X |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 725.00% |
Junior Subordinated Notes | $ 124 |
Capital Securities Amount Outstanding | $ 120 |
PennFed Capital Trust III |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 890.00% |
Junior Subordinated Notes | $ 31 |
Capital Securities Amount Outstanding | $ 30 |
New York Community Capital Trust XI |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 724.00% |
Junior Subordinated Notes | $ 59 |
Capital Securities Amount Outstanding | $ 58 |
Flagstar Statutory Trust II |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 887.00% |
Junior Subordinated Notes | $ 26 |
Capital Securities Amount Outstanding | $ 25 |
Flagstar Statutory Trust III |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 891.00% |
Junior Subordinated Notes | $ 26 |
Capital Securities Amount Outstanding | $ 25 |
Flagstar Statutory Trust IV |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 884.00% |
Junior Subordinated Notes | $ 26 |
Capital Securities Amount Outstanding | $ 25 |
Flagstar Statutory Trust V |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 766.00% |
Junior Subordinated Notes | $ 26 |
Capital Securities Amount Outstanding | $ 25 |
Flagstar Statutory Trust VI |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 766.00% |
Junior Subordinated Notes | $ 26 |
Capital Securities Amount Outstanding | $ 25 |
Flagstar Statutory Trust VII |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 740.00% |
Junior Subordinated Notes | $ 51 |
Capital Securities Amount Outstanding | $ 50 |
Flagstar Statutory Trust VIII |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 716.00% |
Junior Subordinated Notes | $ 26 |
Capital Securities Amount Outstanding | $ 25 |
Flagstar Statutory Trust IX |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 710.00% |
Junior Subordinated Notes | $ 26 |
Capital Securities Amount Outstanding | $ 25 |
Flagstar Statutory Trust X |  |
Debt Instrument |  |
Interest Rate of Capital Securities and Debentures | 815.00% |
Junior Subordinated Notes | $ 15 |
Capital Securities Amount Outstanding | $ 15 |

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