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Document And Entity Information - USD ($)
 3 Months Ended
Dec. 31, 2016
Jan. 23, 2017
Apr. 03, 2016
Document Information      
Entity Registrant Name MOOG INC.    
Entity Central Index Key 0000067887    
Current Fiscal Year End Date --09-30    
Entity Filer Category Large Accelerated Filer    
Document Type 10-Q    
Document Period End Date Dec. 31, 2016    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus Q1    
Amendment Flag false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 1,462,000,000
Class A Common Stock      
Document Information      
Entity Common Stock, Shares Outstanding   32,236,629  
Entity Listing, Par Value Per Share $ 1.00    
Class B Common Stock      
Document Information      
Entity Common Stock, Shares Outstanding   3,634,435  
Entity Listing, Par Value Per Share $ 1.00