Quarterly Data - Unaudited Net Sales And Earnings (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Jan. 02, 2016	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015
Quarterly Financial Data [Abstract]
Net sales	$ 649,268	$ 626,183	$ 632,403	$ 589,670	$ 619,078	$ 613,260	$ 611,142	$ 568,457	$ 2,497,524	$ 2,411,937	$ 2,525,532
Gross profit	191,522	182,414	185,080	172,506	187,274	183,662	179,187	161,460	731,522	711,583	736,704
Net earnings attributable to Moog	$ 38,602	$ 40,088	$ 32,026	$ 30,564	$ 33,143	$ 36,311	$ 31,050	$ 26,241	$ 141,280	$ 126,745	$ 131,883
Net earnings per share attributable to Moog, Basic	$ 1.08	$ 1.12	$ 0.89	$ 0.85	$ 0.92	$ 1.01	$ 0.85	$ 0.71	$ 3.94	$ 3.49	$ 3.39
Net earnings per share attributable to Moog, Diluted	$ 1.07	$ 1.11	$ 0.88	$ 0.84	$ 0.92	$ 1.00	$ 0.85	$ 0.71	$ 3.90	$ 3.47	$ 3.35