Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2018
Mar. 19, 2019
Jun. 30, 2018
Document and Entity Information [Abstract]      
Entity Registrant Name Delta Tucker Holdings, Inc.    
Entity Central Index Key 0001514226    
Document Type 10-K    
Document Period End Date Dec. 31, 2018    
Amendment Flag false    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Common Stock, Shares Outstanding   100  
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Current Reporting Status No    
Entity Voluntary Filers Yes    
Entity Well-known Seasoned Issuers No    
Entity Public Float     $ 0