XML 143 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2019
Feb. 28, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Entity File Number 001-16577    
Entity Registrant Name Flagstar Bancorp, Inc    
Entity Incorporation, State or Country Code MI    
Entity Tax Identification Number 38-3150651    
Entity Address, Address Line One 5151 Corporate Drive,    
Entity Address, City or Town Troy,    
Entity Address, State or Province MI    
Entity Address, Postal Zip Code 48098-2639    
City Area Code 248    
Local Phone Number 312-2000    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol FBC    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 2
Entity Common Stock, Shares Outstanding   56,657,508  
Documents Incorporated by Reference
Portions of the registrant’s Proxy Statement relating to the 2020 Annual Meeting of Stockholders are incorporated by reference into Part III of this Report on Form 10-K.
    
Entity Central Index Key 0001033012    
Document Period End Date Dec. 31, 2019    
Amendment Flag false    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31