Segment Information - Schedule of Total Revenues, Operating Profit and Total Asset for Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jul. 01, 2016	Jun. 26, 2015	Jul. 01, 2016	Jun. 26, 2015
Segment Reporting Information [Line Items]
Revenues from External Customers:	$ 2,693,873	$ 2,907,541	$ 8,323,570	$ 8,997,878
Operating Profit	109,556	100,434	255,787	391,701
Restructuring Charges	32,920		136,671
Total Other Expense	(6,749)	(3,246)	(4,737)	(10,855)
Earnings Before Taxes	102,807	97,188	251,050	380,846
Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	161,999	151,614	450,354	475,643
Corporate Non-Segment
Segment Reporting Information [Line Items]
Other Corporate Expenses	(19,523)	(7,558)	(57,896)	(26,282)
Restructuring Charges	5,319		18,160
Segment Reconciling Items
Segment Reporting Information [Line Items]
Restructuring Charges	(32,920)	(43,622)	(136,671)	(57,660)
Petroleum & Chemicals
Segment Reporting Information [Line Items]
Revenues from External Customers:	766,546	983,887	2,575,474	3,191,106
Petroleum & Chemicals \| Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	29,646	42,011	92,194	105,765
Restructuring Charges	21,774		74,789
Aerospace & Technology
Segment Reporting Information [Line Items]
Revenues from External Customers:	667,785	699,118	2,007,440	2,134,460
Aerospace & Technology \| Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	53,741	46,467	156,861	149,500
Restructuring Charges	1,924		4,359
Buildings & Infrastructure
Segment Reporting Information [Line Items]
Revenues from External Customers:	553,546	593,834	1,696,004	1,820,626
Buildings & Infrastructure \| Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	50,168	41,625	133,083	122,017
Restructuring Charges	2,245		17,812
Industrial
Segment Reporting Information [Line Items]
Revenues from External Customers:	705,996	630,702	2,044,652	1,851,686
Industrial \| Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	28,444	$ 21,511	68,216	$ 98,361
Restructuring Charges	$ 1,658		$ 21,551

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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Amount of expense classified as other.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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