v3.26.1
Borrowed Funds - Junior Subordinated Debentures (Details)
$ in Millions
6 Months Ended
Jun. 30, 2026
USD ($)
Debt Instrument  
Junior subordinated debentures $ 611
Capital Securities Amount Outstanding 590
Flagstar Bancorp  
Debt Instrument  
Fair value adjustments, business combination $ (24)
New York Community Capital Trust V (BONUSES Units)  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 6.00%
Junior subordinated debentures $ 148
Capital Securities Amount Outstanding $ 142
New York Community Capital Trust X  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 5.53%
Junior subordinated debentures $ 124
Capital Securities Amount Outstanding $ 120
PennFed Capital Trust III  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 7.18%
Junior subordinated debentures $ 31
Capital Securities Amount Outstanding $ 30
New York Community Capital Trust XI  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 5.64%
Junior subordinated debentures $ 59
Capital Securities Amount Outstanding $ 58
Flagstar Statutory Trust II  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 7.26%
Junior subordinated debentures $ 26
Capital Securities Amount Outstanding $ 25
Flagstar Statutory Trust III  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 7.18%
Junior subordinated debentures $ 26
Capital Securities Amount Outstanding $ 25
Flagstar Statutory Trust IV  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 7.24%
Junior subordinated debentures $ 26
Capital Securities Amount Outstanding $ 25
Flagstar Statutory Trust V  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 5.93%
Junior subordinated debentures $ 26
Capital Securities Amount Outstanding $ 25
Flagstar Statutory Trust VI  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 5.93%
Junior subordinated debentures $ 26
Capital Securities Amount Outstanding $ 25
Flagstar Statutory Trust VII  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 5.68%
Junior subordinated debentures $ 52
Capital Securities Amount Outstanding $ 50
Flagstar Statutory Trust VIII  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 5.43%
Junior subordinated debentures $ 26
Capital Securities Amount Outstanding $ 25
Flagstar Statutory Trust IX  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 5.38%
Junior subordinated debentures $ 26
Capital Securities Amount Outstanding $ 25
Flagstar Statutory Trust X  
Debt Instrument  
Interest Rate of Capital Securities and Debentures 6.43%
Junior subordinated debentures $ 15
Capital Securities Amount Outstanding $ 15