Restructuring and Other Charges - Summary of 2015 Restructuring Impacts on Reportable Segment Income by Line of Business (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Restructuring Charges [Line Items]
Restructuring Charges	$ 9,454	$ 32,920	$ 92,061	$ 136,671
Operating Segments | Aerospace & Technology
Restructuring Charges [Line Items]
Restructuring Charges		1,924	1,004	4,359
Operating Segments | Buildings & Infrastructure
Restructuring Charges [Line Items]
Restructuring Charges	7,266	2,245	22,089	17,812
Operating Segments | Industrial
Restructuring Charges [Line Items]
Restructuring Charges	(220)	1,658	9,268	21,551
Operating Segments | Petroleum & Chemicals
Restructuring Charges [Line Items]
Restructuring Charges	(458)	21,774	28,917	74,789
Corporate Non-Segment
Restructuring Charges [Line Items]
Restructuring Charges	$ 2,866	$ 5,319	$ 30,783	$ 18,160