Document And Entity Information - USD ($)	9 Months Ended
	Jun. 30, 2018	Jul. 24, 2018	Apr. 01, 2018
Document Information
Entity Registrant Name	MOOG INC.
Entity Central Index Key	0000067887
Current Fiscal Year End Date	--09-29
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 2,718,000,000
Class A Common Stock
Document Information
Entity Common Stock, Shares Outstanding		32,466,689
Entity Listing, Par Value Per Share	$ 1.00
Class B Common Stock
Document Information
Entity Common Stock, Shares Outstanding		3,322,519
Entity Listing, Par Value Per Share	$ 1.00