Consolidated Condensed Statements of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock At Cost	Stock Employee Compensation Trust (SECT)	Supplemental Retirement Plan (SERP) Trust	Accumulated Other Comprehensive Loss	Noncontrolling Interest	Class A Common Stock	Class A Common Stock Treasury Stock At Cost	Class A Common Stock Stock Employee Compensation Trust (SECT)	Class B Common Stock	Class B Common Stock Treasury Stock At Cost	Class B Common Stock Stock Employee Compensation Trust (SECT)	Class B Common Stock Supplemental Retirement Plan (SERP) Trust
Beginning of period - Shareholder's equity, Amount at Sep. 30, 2017		$ 51,280	$ 492,246	$ 1,847,819	$ (739,157)	$ (89,919)	$ (12,474)	$ (335,491)
Increase (Decrease) in Stockholders' Equity
Issuance of shares			(2,874)		5,325
Equity-based compensation expense			4,394
Adjustment to market - SECT, SERP and other			(7,256)
Net earnings attributable to Moog	$ 55,947			55,947
Dividends				(8,941)
Adoption of ASC 606 | ASC 606				0
Tax Cuts and Jobs Act, reclassification from AOCIL to retained earnings	(47,077)			47,077				(47,077)
Class A and B shares purchased					(5,210)
Issuance of shares - SECT						1,941	0
Purchase of shares - SECT	(8,444)					(8,444)
Adjustment to market						6,518	738
Other comprehensive income (loss)	5,799							5,825
End of period - Moog shareholder's equity, Amount at Jun. 30, 2018	1,262,267	51,280	486,510	1,941,902	(739,042)	(89,904)	(11,736)	(376,743)
Noncontrolling Interest - Beginning of period at Sep. 30, 2017									$ 0
Increase (Decrease) in Stockholders' Equity
Net earnings attributable to noncontrolling interest	67								67
Foreign currency translation adjustment	(10,127)								(26)
Acquisition of noncontrolling interest									485
Noncontrolling Interest - End of period at Jun. 30, 2018									526
Beginning of period - Common Stock at Sep. 30, 2017										43,704,286			7,575,427
Increase (Decrease) in Stockholders' Equity
Conversion of Class B to Class A										75,951			(75,951)
End of period - Common Stock at Jun. 30, 2018										43,780,237			7,499,476
Beginning of period, Shares at Sep. 30, 2017											(10,933,003)	(425,148)		(3,333,927)	(654,753)	(150,000)
Increase (Decrease) in Stockholders' Equity
Class A and B shares issued related to equity compensation, shares											83,193			28,460
Class A and B shares purchased, shares											(38,590)			(22,469)
Issuance of shares - SECT															21,871	0
Purchase of shares - SECT															(97,855)
End of period, Shares at Jun. 30, 2018											(10,888,400)	(425,148)		(3,327,936)	(730,737)	(150,000)
Beginning of period - Shareholder's equity, Amount at Mar. 31, 2018		51,280	490,055	1,901,182	(739,091)	(93,330)	(12,078)	(342,314)
Increase (Decrease) in Stockholders' Equity
Issuance of shares			(141)		141
Equity-based compensation expense			894
Adjustment to market - SECT, SERP and other			(4,298)
Net earnings attributable to Moog	40,683			40,683
Dividends				37
Adoption of ASC 606 | ASC 606				0
Tax Cuts and Jobs Act, reclassification from AOCIL to retained earnings	0			0				0
Class A and B shares purchased					(92)
Issuance of shares - SECT						0	0
Purchase of shares - SECT						(530)
Adjustment to market						3,956	342
Other comprehensive income (loss)	(34,455)							(34,429)
End of period - Moog shareholder's equity, Amount at Jun. 30, 2018	1,262,267	51,280	486,510	1,941,902	(739,042)	(89,904)	(11,736)	(376,743)
Noncontrolling Interest - Beginning of period at Mar. 31, 2018									0
Increase (Decrease) in Stockholders' Equity
Net earnings attributable to noncontrolling interest	67								67
Foreign currency translation adjustment	(40,788)								(26)
Acquisition of noncontrolling interest									485
Noncontrolling Interest - End of period at Jun. 30, 2018									526
Beginning of period - Common Stock at Mar. 31, 2018										43,735,558			7,544,155
Increase (Decrease) in Stockholders' Equity
Conversion of Class B to Class A										44,679			(44,679)
End of period - Common Stock at Jun. 30, 2018										43,780,237			7,499,476
Beginning of period, Shares at Mar. 31, 2018											(10,891,108)	(425,148)		(3,327,853)	(723,963)	(150,000)
Increase (Decrease) in Stockholders' Equity
Class A and B shares issued related to equity compensation, shares											3,514			221
Class A and B shares purchased, shares											(806)			(304)
Issuance of shares - SECT															0	0
Purchase of shares - SECT															(6,774)
End of period, Shares at Jun. 30, 2018											(10,888,400)	(425,148)		(3,327,936)	(730,737)	(150,000)
Increase (Decrease) in Stockholders' Equity
Total Shareholders' Equity	1,262,793
Total Shareholders' Equity	1,224,986							(372,181)
Beginning of period - Shareholder's equity, Amount at Sep. 29, 2018		51,280	502,257	1,973,514	(738,494)	(118,449)	(72,941)	(372,181)
Increase (Decrease) in Stockholders' Equity
Issuance of shares			(116)		6,154
Equity-based compensation expense			5,130
Adjustment to market - SECT, SERP and other			18,691
Net earnings attributable to Moog	133,893			133,893
Dividends				(26,156)
Adoption of ASC 606 | ASC 606				14,923
Tax Cuts and Jobs Act, reclassification from AOCIL to retained earnings	0			0				0
Class A and B shares purchased					(17,986)
Issuance of shares - SECT						18,236	4,293
Purchase of shares - SECT	(13,327)					(13,327)
Adjustment to market						(10,588)	(8,103)
Other comprehensive income (loss)	5,627							5,627
End of period - Moog shareholder's equity, Amount at Jun. 29, 2019	1,355,657	51,280	525,962	2,096,174	(750,326)	(124,128)	(76,751)	(366,554)
Noncontrolling Interest - Beginning of period at Sep. 29, 2018									0
Increase (Decrease) in Stockholders' Equity
Net earnings attributable to noncontrolling interest	0								0
Foreign currency translation adjustment	(9,277)								0
Acquisition of noncontrolling interest									0
Noncontrolling Interest - End of period at Jun. 29, 2019									0
Beginning of period - Common Stock at Sep. 29, 2018										43,784,489			7,495,224
Increase (Decrease) in Stockholders' Equity
Conversion of Class B to Class A										4,558			(4,558)
End of period - Common Stock at Jun. 29, 2019										43,789,047			7,490,666
Beginning of period, Shares at Sep. 29, 2018											(10,872,575)	(425,148)		3,323,996	(983,772)	(876,170)
Increase (Decrease) in Stockholders' Equity
Class A and B shares issued related to equity compensation, shares											103,232			104,465
Class A and B shares purchased, shares											(95,498)			(125,583)
Issuance of shares - SECT															227,816	50,000
Purchase of shares - SECT															(151,793)
End of period, Shares at Jun. 29, 2019											(10,864,841)	(425,148)		(3,345,114)	(907,749)	(826,170)
Beginning of period - Shareholder's equity, Amount at Mar. 30, 2019		51,280	510,538	2,057,435	(749,845)	(109,506)	(75,079)	(370,381)
Increase (Decrease) in Stockholders' Equity
Issuance of shares			(1,186)		1,186
Equity-based compensation expense			1,439
Adjustment to market - SECT, SERP and other			15,171
Net earnings attributable to Moog	47,465			47,465
Dividends				(8,726)
Adoption of ASC 606 | ASC 606				0
Tax Cuts and Jobs Act, reclassification from AOCIL to retained earnings	0			0				0
Class A and B shares purchased					(1,667)
Issuance of shares - SECT						557	4,293
Purchase of shares - SECT						(5,973)
Adjustment to market						(9,206)	(5,965)
Other comprehensive income (loss)	3,827							3,827
End of period - Moog shareholder's equity, Amount at Jun. 29, 2019	1,355,657	$ 51,280	$ 525,962	$ 2,096,174	$ (750,326)	$ (124,128)	$ (76,751)	(366,554)
Noncontrolling Interest - Beginning of period at Mar. 30, 2019									0
Increase (Decrease) in Stockholders' Equity
Net earnings attributable to noncontrolling interest	0								0
Foreign currency translation adjustment	(996)								0
Acquisition of noncontrolling interest									0
Noncontrolling Interest - End of period at Jun. 29, 2019									$ 0
Beginning of period - Common Stock at Mar. 30, 2019										43,785,435			7,494,278
Increase (Decrease) in Stockholders' Equity
Conversion of Class B to Class A										3,612			(3,612)
End of period - Common Stock at Jun. 29, 2019										43,789,047			7,490,666
Beginning of period, Shares at Mar. 30, 2019											(10,882,780)	(425,148)		(3,347,250)	(846,527)	(876,170)
Increase (Decrease) in Stockholders' Equity
Class A and B shares issued related to equity compensation, shares											31,369			6,136
Class A and B shares purchased, shares											(13,430)			(4,000)
Issuance of shares - SECT															6,490	50,000
Purchase of shares - SECT															(67,712)
End of period, Shares at Jun. 29, 2019											(10,864,841)	(425,148)		(3,345,114)	(907,749)	(826,170)
Increase (Decrease) in Stockholders' Equity
Total Shareholders' Equity	$ 1,355,657							$ (366,554)