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	Noncontrolling Interest	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 - Moog shareholder's equity, Amount at Oct. 01, 2016		$ 51,280	$ 465,762	$ 1,706,539	$ (741,700)	$ (49,463)	$ (8,946)	$ (435,061)
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
Dividends	0
Adoption of ASC 606 | Accounting Standards Update 2014-09				0
Tax Cuts and Jobs Act, reclassification to retained earnings	0							0
Class A and B shares purchased					(8,643)
Issuance of shares						867	0
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 - Moog shareholder's equity, Amount at Sep. 30, 2017	1,214,304	51,280	492,246	1,847,819	(739,157)	(89,919)	(12,474)	(335,491)
Beginning of year - Noncontrolling Interest, Amount at Oct. 01, 2016									$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interest of acquired entity									0
Net earnings attributable to noncontrolling interest	(870)								0
Foreign currency translation adjustment	27,460								0
Acquisition of noncontrolling interest	(4,781)								0
End of year - Noncontrolling Interest, Amount at Sep. 30, 2017									0
Beginning of year - Redeemable Noncontrolling Interest at Oct. 01, 2016	5,651
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to redeemable noncontrolling interest	(870)
Acquisition of noncontrolling interest	(4,781)								0
End of year - Redeemable Noncontrolling Interest at Sep. 30, 2017	0
Beginning of year - Common stock at Oct. 01, 2016										43,666,801			7,612,912
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
Beginning 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]
Shares issued related to equity awards											284,048			7,380
Shares purchased											(106,964)			(17,381)
Shares issued															15,000	0
Purchase of shares - SECT															(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)
Total shareholders' equity	1,214,304							(335,491)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares			(4,321)		8,881
Equity-based compensation expense			5,804
Redemption of noncontrolling interest			175
Adjustments to market - SECT, SERP and other			8,353
Net earnings attributable to Moog	96,507			96,507
Dividends				(17,889)
Adoption of ASC 606 | Accounting Standards Update 2014-09				0
Tax Cuts and Jobs Act, reclassification to retained earnings	(47,077)			47,077				(47,077)
Class A and B shares purchased					(8,218)
Issuance of shares						4,714	0
Purchase of shares - SECT	(30,358)					(30,358)
Purchase of shares - SERP	(55,000)						(55,000)
Adjustment to market						(2,886)	(5,467)
Other comprehensive income (loss)	10,357							10,387
End of year - Moog shareholder's equity, Amount at Sep. 29, 2018	1,224,986	51,280	502,257	1,973,514	(738,494)	(118,449)	(72,941)	(372,181)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interest of acquired entity									1,927
Net earnings attributable to noncontrolling interest	121								121
Foreign currency translation adjustment	(16,279)								(30)
Acquisition of noncontrolling interest	0								(2,018)
End of year - Noncontrolling Interest, Amount at Sep. 29, 2018									0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to redeemable noncontrolling interest	0
Acquisition of noncontrolling interest	0								(2,018)
End of year - Redeemable Noncontrolling Interest at Sep. 29, 2018	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B to Class A										80,203			(80,203)
End of year - Common stock at Sep. 29, 2018										43,784,489			7,495,224
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued related to equity awards											104,842			64,664
Shares purchased											(44,414)			(54,733)
Shares issued															57,277	0
Purchase of shares - SECT															(386,296)
Purchase of shares - SERP																(726,170)
End of year - Shares at Sep. 29, 2018											(10,872,575)	(425,148)		(3,323,996)	(983,772)	(876,170)
Total shareholders' equity	1,224,986							(372,181)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares			(1,018)		9,880
Equity-based compensation expense			6,464
Redemption of noncontrolling interest			0
Adjustments to market - SECT, SERP and other			2,843
Net earnings attributable to Moog	179,748			179,748
Dividends				(34,857)
Adoption of ASC 606 | Accounting Standards Update 2014-09				14,923
Tax Cuts and Jobs Act, reclassification to retained earnings	0			0				0
Class A and B shares purchased					(40,955)
Issuance of shares						22,190	4,293
Purchase of shares - SECT	(15,288)					(15,288)
Purchase of shares - SERP	0						0
Adjustment to market						55	(2,898)
Other comprehensive income (loss)	(47,885)							(47,885)
End of year - Moog shareholder's equity, Amount at Sep. 28, 2019	1,322,481	$ 51,280	$ 510,546	$ 2,133,328	$ (769,569)	$ (111,492)	$ (71,546)	(420,066)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interest of acquired entity									0
Net earnings attributable to noncontrolling interest	0								0
Foreign currency translation adjustment	(29,984)								0
Acquisition of noncontrolling interest	0								0
End of year - Noncontrolling Interest, Amount at Sep. 28, 2019									0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to redeemable noncontrolling interest	0
Acquisition of noncontrolling interest	0								$ 0
End of year - Redeemable Noncontrolling Interest at Sep. 28, 2019	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of Class B to Class A										10,446			(10,446)
End of year - Common stock at Sep. 28, 2019										43,794,935			7,484,778
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued related to equity awards											109,005			148,017
Shares purchased											(337,942)			(169,510)
Shares issued															270,675	50,000
Purchase of shares - SECT															(173,203)
Purchase of shares - SERP																0
End of year - Shares at Sep. 28, 2019											(11,101,512)	(425,148)		(3,345,489)	(886,300)	(826,170)
Total shareholders' equity	$ 1,322,481							$ (420,066)