Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Shares At Cost	Stock Employee Compensation Trust (SECT)	Supplemental Retirement Plan (SERP) Trust	Accumulated Other Comprehensive (Loss) Income	Class A Common Stock	Class A Common Stock Treasury Shares At Cost	Class A Common Stock Stock Employee Compensation Trust (SECT)	Class B Common Stock	Class B Common Stock Treasury Shares At Cost	Class B Common Stock Stock Employee Compensation Trust (SECT)	Class B Common Stock Supplemental Retirement Plan (SERP) Trust
Beginning of year, Amount at Sep. 27, 2014			$ 463,965	$ 1,447,911	$ (360,445)	$ (48,458)	$ 0	$ (206,838)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares			(4,529)		15,965
Equity-based compensation expense			5,074
Redemption of noncontrolling interest			0
Adjustments to market - SECT, SERP and other			(7,998)
Net earnings attributable to Moog	$ 131,883			131,883
Class A and B shares purchased					(357,291)
Issuance of shares						7,395
Purchase of shares - SECT	(15,151)					(15,151)
Purchase of shares - SERP	(7,328)						(7,328)
Adjustment to market						12,003	1,991
Other comprehensive income (loss)	(134,897)							(134,897)
End of year, Amount at Oct. 03, 2015	994,532	$ 51,280	456,512	1,579,794	(701,771)	(44,211)	(5,337)	(341,735)
Beginning of year at Sep. 27, 2014	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redeemable noncontrolling interest of acquired entity	0
Net loss attributable to redeemable noncontrolling interest	0
Acquisition of noncontrolling interest	0
End of year at Oct. 03, 2015	0
Beginning of year - Common stock at Sep. 27, 2014									43,627,531			7,652,182
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B to Class A									11,087			(11,087)
End of year - Common stock at Oct. 03, 2015									43,638,618			7,641,095
Beginning of year - Shares at Sep. 27, 2014										(5,806,702)	0		(3,319,038)	(710,841)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued related to equity awards										543,923			0
Shares purchased										(5,055,652)			(4,888)
Shares issued														101,000
Purchase of shares - SECT											0			(218,540)
Purchase of shares - SERP															(100,000)
End of year - Shares at Oct. 03, 2015										(10,318,431)	0		(3,323,926)	(828,381)	(100,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares			(429)		5,003
Equity-based compensation expense			3,271
Redemption of noncontrolling interest			0
Adjustments to market - SECT, SERP and other			6,408
Net earnings attributable to Moog	126,745			126,745
Class A and B shares purchased					(44,932)
Issuance of shares						28,048
Purchase of shares - SECT	(28,799)					(28,799)
Purchase of shares - SERP	(2,300)						(2,300)
Adjustment to market						(4,501)	(1,309)
Other comprehensive income (loss)	(93,326)							(93,326)
End of year, Amount at Oct. 01, 2016	988,411	51,280	465,762	1,706,539	(741,700)	(49,463)	(8,946)	(435,061)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redeemable noncontrolling interest of acquired entity	8,763
Net loss attributable to redeemable noncontrolling interest	(3,112)
Acquisition of noncontrolling interest	0
End of year at Oct. 01, 2016	5,651
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B to Class A									28,183			(28,183)
End of year - Common stock at Oct. 01, 2016									43,666,801			7,612,912
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued related to equity awards										152,099			0
Shares purchased										(943,755)			0
Shares issued														487,678
Purchase of shares - SECT											(425,148)			(64,216)
Purchase of shares - SERP															(50,000)
End of year - Shares at Oct. 01, 2016										(11,110,087)	(425,148)		(3,323,926)	(404,919)	(150,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares			(7,390)		11,186
Equity-based compensation expense			4,582
Redemption of noncontrolling interest			3,125
Adjustments to market - SECT, SERP and other			26,167
Net earnings attributable to Moog	141,280			141,280
Class A and B shares purchased					(8,643)
Issuance of shares						867
Purchase of shares - SECT	(18,685)					(18,685)
Purchase of shares - SERP	0						0
Adjustment to market						(22,638)	(3,528)
Other comprehensive income (loss)	99,570							99,570
End of year, Amount at Sep. 30, 2017	1,214,304	$ 51,280	$ 492,246	$ 1,847,819	$ (739,157)	$ (89,919)	$ (12,474)	$ (335,491)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Redeemable noncontrolling interest of acquired entity	0
Net loss attributable to redeemable noncontrolling interest	(870)
Acquisition of noncontrolling interest	(4,781)
End of year at Sep. 30, 2017	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B to Class A									37,485			(37,485)
End of year - Common stock at Sep. 30, 2017									43,704,286			7,575,427
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued related to equity awards										284,048			7,380
Shares purchased										(106,964)			(17,381)
Shares issued														15,000
Purchase of shares - SECT											0			(264,834)
Purchase of shares - SERP															0
End of year - Shares at Sep. 30, 2017										(10,933,003)	(425,148)		(3,333,927)	(654,753)	(150,000)