Segment Information - Schedule of Total Revenues, Operating Profit and Total Asset for Reporting Segment (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 01, 2016	Mar. 27, 2015	Apr. 01, 2016	Mar. 27, 2015
Segment Reporting Information [Line Items]
Revenues from External Customers:	$ 2,781,763	$ 2,903,332	$ 5,629,697	$ 6,090,337
Operating Profit	86,781	133,045	146,231	291,268
Restructuring Charges	35,368		103,751
Total Other Income (Expense)	3,675	(4,083)	2,012	(7,611)
Earnings Before Taxes	90,456	128,962	148,243	283,657
Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	140,946	172,033	288,355	324,030
Corporate Non-Segment
Segment Reporting Information [Line Items]
Other Corporate Expenses	(18,797)	(24,950)	(38,373)	(18,724)
Restructuring Charges	3,173		12,841
Segment Reconciling Items
Segment Reporting Information [Line Items]
Restructuring Charges	(35,368)	(14,038)	(103,751)	(14,038)
Petroleum & Chemicals
Segment Reporting Information [Line Items]
Revenues from External Customers:	866,615	1,046,767	1,808,928	2,207,219
Petroleum & Chemicals \| Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	30,945	28,656	62,548	63,755
Restructuring Charges	29,039		53,015
Aerospace & Technology
Segment Reporting Information [Line Items]
Revenues from External Customers:	669,464	701,115	1,339,655	1,435,342
Aerospace & Technology \| Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	55,121	53,072	103,120	103,033
Restructuring Charges	239		2,435
Buildings & Infrastructure
Segment Reporting Information [Line Items]
Revenues from External Customers:	579,128	602,062	1,142,458	1,226,792
Buildings & Infrastructure \| Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	42,463	42,428	82,915	80,392
Restructuring Charges	601		15,567
Industrial
Segment Reporting Information [Line Items]
Revenues from External Customers:	666,556	553,388	1,338,656	1,220,984
Industrial \| Operating Segments
Segment Reporting Information [Line Items]
Operating Profit	12,417	$ 47,877	39,772	$ 76,850
Restructuring Charges	$ 2,316		$ 19,893

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
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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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The net result for the period of deducting operating expenses from operating revenues.

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This element represents a sum total of expenses not separately reflected on the income statement for the period.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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