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Restructuring and Other Charges - Summary of Restructuring by Major Type of Restructuring Costs (Details) - USD ($) $ in Thousands | 2 Months Ended | 3 Months Ended | 5 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Apr. 01, 2016 | Mar. 31, 2017 | Apr. 01, 2016 | Mar. 31, 2017
Restructuring Charges [Line Items] |  |  |  |
Restructuring costs | $ 35,368 | $ 52,266 | $ 103,751 | $ 84,007
Lease Abandonments |  |  |  |
Restructuring Charges [Line Items] |  |  |  |
Restructuring costs | 19,872 | 27,992 | 64,271 | 44,601
Involuntary Terminations |  |  |  |
Restructuring Charges [Line Items] |  |  |  |
Restructuring costs | 15,410 | 18,554 | 38,289 | 29,886
Outside Services |  |  |  |
Restructuring Charges [Line Items] |  |  |  |
Restructuring costs | $ 86 | 2,261 | $ 1,191 | 3,552
Other Restructuring Related |  |  |  |
Restructuring Charges [Line Items] |  |  |  |
Restructuring costs |  | $ 3,459 |  | $ 5,968

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- Definition Amount, after cash payment, 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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