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Restructuring and Other Charges - Summary of 2015 Restructuring Impact on the Reportable Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 30, 2016 | Apr. 01, 2016 | Mar. 31, 2017 | Apr. 01, 2016
Restructuring Charges [Line Items] |  |  |  |  |
Restructuring Charges | $ 52,266 | $ 31,741 | $ 35,368 | $ 84,007 | $ 103,751
Operating Segments | Aerospace & Technology |  |  |  |  |
Restructuring Charges [Line Items] |  |  |  |  |
Restructuring Charges | 834 |  | 239 | 1,004 | 2,435
Operating Segments | Buildings & Infrastructure |  |  |  |  |
Restructuring Charges [Line Items] |  |  |  |  |
Restructuring Charges | 8,315 |  | 601 | 16,223 | 15,567
Operating Segments | Industrial |  |  |  |  |
Restructuring Charges [Line Items] |  |  |  |  |
Restructuring Charges | 6,964 |  | 2,316 | 9,488 | 19,893
Operating Segments | Petroleum & Chemicals |  |  |  |  |
Restructuring Charges [Line Items] |  |  |  |  |
Restructuring Charges | 15,791 |  | 29,039 | 29,375 | 53,015
Corporate Non-Segment |  |  |  |  |
Restructuring Charges [Line Items] |  |  |  |  |
Restructuring Charges | $ 20,362 |  | $ 3,173 | $ 27,917 | $ 12,841

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