Segment Information - Schedule of Total Revenues, Operating Profit and Total Asset for Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Segment Reporting Information [Line Items]
Revenues from External Customers	$ 2,514,751	$ 2,693,873	$ 7,368,922	$ 8,323,570
Total Operating Profit	128,475	109,556	285,276	255,787
Restructuring and Other Charges	(10,700)	(32,920)	(115,899)	(136,671)
Total Other (Expense) income	(1,079)	(6,657)	(10,276)	(4,460)
Total Other (Expense) income - Restructuring		(92)	(1,233)	(277)
Earnings Before Taxes	127,396	102,807	273,767	251,050
Operating Segments
Segment Reporting Information [Line Items]
Total Operating Profit	168,166	161,999	455,567	450,354
Corporate Non-Segment
Segment Reporting Information [Line Items]
Other Corporate Expenses	(28,991)	(19,523)	(54,392)	(57,896)
Petroleum & Chemicals
Segment Reporting Information [Line Items]
Revenues from External Customers	600,479	766,546	1,800,119	2,575,474
Petroleum & Chemicals | Operating Segments
Segment Reporting Information [Line Items]
Total Operating Profit	29,055	29,646	88,326	92,194
Aerospace & Technology
Segment Reporting Information [Line Items]
Revenues from External Customers	585,432	667,785	1,739,908	2,007,440
Aerospace & Technology | Operating Segments
Segment Reporting Information [Line Items]
Total Operating Profit	50,591	53,741	146,735	156,861
Buildings & Infrastructure
Segment Reporting Information [Line Items]
Revenues from External Customers	647,252	553,546	1,813,111	1,696,004
Restructuring and Other Charges	(1,246)		(23,844)
Buildings & Infrastructure | Operating Segments
Segment Reporting Information [Line Items]
Total Operating Profit	56,173	50,168	138,957	133,083
Industrial
Segment Reporting Information [Line Items]
Revenues from External Customers	681,588	705,996	2,015,784	2,044,652
Industrial | Operating Segments
Segment Reporting Information [Line Items]
Total Operating Profit	$ 32,347	$ 28,444	$ 81,549	$ 68,216