Description of Business and Summary of Significant Accounting Policies - Additional Information (Details)
6 Months Ended
Sep. 26, 2014
USD ($)
Jun. 26, 2015
capability_area
segment
Sep. 18, 2014
Sep. 17, 2014
USD ($)
Accounting Policies [Line Items]        
Number of reportable segments | segment   1    
Number of capability areas for which services are offered | capability_area   3    
Distribution to subsidiary of Exelis $ 136,300,000      
Transition services agreement, term (or less)   1 year    
Vectrus, Inc.        
Accounting Policies [Line Items]        
Common stock, distribution basis for issued and outstanding shares     0.0556  
Term Loan | Term Facility        
Accounting Policies [Line Items]        
Credit facility, maximum borrowing capacity       $ 140,000,000
Distribution to subsidiary of Exelis $ 136,300,000