[Line Items] for Basis of Presentation and Summary of Significant Accounting Policies [Table]

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Amount represents the cost of borrowed funds accounted for as interest, amortization of deferred debt financing fees, foreign exchange gains or (losses) and interest income.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Amount of the cumulative effect on retained earnings net of related income tax effect.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22663-107794

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The number of countries in which the entity operates as of balance sheet date.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 29, 2019 USD ($) country	Mar. 30, 2018 USD ($)	Mar. 29, 2019 USD ($) country segment	Mar. 30, 2018 USD ($)
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Decrease in Cost of services provided	$ 3,639,959	$ 3,563,009	$ 7,434,404	$ 7,085,239
Increase in Interest and Other Financing Costs, net	84,178	$ 92,653	$ 167,155	$ 166,786
Number of reportable segments \| segment			3
Accounting Standards Update 2017-07
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Decrease in Cost of services provided	(1,500)		$ (3,700)
Increase in Interest and Other Financing Costs, net	2,200
Accounting Standards Update 2014-09 \| Difference between Revenue Guidance in Effect before and after Topic 606
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Decrease in Cost of services provided	(94,490)		(183,197)
Increase in Interest and Other Financing Costs, net	$ 0		0
Retained earnings			$ 58,400
Foreign Countries Outside North America
Basis of Presentation and Summary of Significant Accounting Policies [Line Items]
Number of foreign countries in which entity operates \| country	18		18