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Restructuring and Other Charges - Summary of Restructuring by Major Type of Restructuring Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Oct. 02, 2015
Restructuring Charges [Line Items]
Restructuring costs	$ 98,688	$ 187,907	$ 157,192
Lease Abandonments
Restructuring Charges [Line Items]
Restructuring costs	55,647	92,643	90,569
Involuntary Terminations
Restructuring Charges [Line Items]
Restructuring costs	30,716	85,599	55,313
Outside Services
Restructuring Charges [Line Items]
Restructuring costs	4,236	7,398	12,734
Other Restructuring Related Costs, Net
Restructuring Charges [Line Items]
Restructuring costs	$ 8,089	$ 2,267	$ (1,424)

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+ References

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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=98514028&loc=d3e3602-108585

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