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Debt - 2014 Credit Agreement (Details) $ in Millions, $ in Millions, $ in Millions							6 Months Ended
	Oct. 01, 2019	Jul. 01, 2018	Mar. 13, 2018 USD ($)	Mar. 31, 2017	Sep. 29, 2016 USD ($)	Oct. 17, 2014 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2018 USD ($)	Mar. 13, 2018 CAD ($)	Mar. 13, 2018 AUD ($)	Mar. 13, 2018 USD ($)
Term loan A
Debt agreements
Borrowing capacity					$ 185.0
2014 Credit Agreement | Minimum | Base Rate
Debt agreements
Interest rate, basis spread (as a percent)		0.25%
2014 Credit Agreement | Minimum | Euro currency rate
Debt agreements
Interest rate, basis spread (as a percent)		1.25%
2014 Credit Agreement | Maximum | Base Rate
Debt agreements
Interest rate, basis spread (as a percent)		1.00%
2014 Credit Agreement | Maximum | Euro currency rate
Debt agreements
Interest rate, basis spread (as a percent)		2.00%
2014 Credit Agreement | Term loan A
Debt agreements
Borrowing capacity									$ 500	$ 250	$ 510.0
2014 Credit Agreement | Term loan A | Base Rate | USD
Debt agreements
Interest rate, basis spread (as a percent)			0.50%
2014 Credit Agreement | Term loan A | Euro currency rate
Debt agreements
Interest rate, basis spread (as a percent)			1.50%
2014 Credit Agreement | Term loan B
Debt agreements
Borrowing capacity											$ 600.0
2014 Credit Agreement | Term loan B | Base Rate
Debt agreements
Interest rate, basis spread (as a percent)			0.75%
2014 Credit Agreement | Term loan B | Euro currency rate
Debt agreements
Interest rate, basis spread (as a percent)			1.75%
2014 Credit Agreement | Revolving credit facility
Debt agreements
Increase in borrowing capacity			$ 1,350.0			$ 1,050.0
Outstanding letters of credit							$ 25.6	$ 28.7
Remaining borrowing capacity under credit facility							$ 1,039.3	$ 1,321.3
2014 Credit Agreement | Revolving credit facility | Base Rate
Debt agreements
Interest rate, basis spread (as a percent)			0.75%
2014 Credit Agreement | Revolving credit facility | Euro currency rate
Debt agreements
Interest rate, basis spread (as a percent)			1.75%
2014 Credit Agreement | Line of credit
Debt agreements
Borrowing capacity					$ 500.0
Consolidated leverage ratio	4.0		4.5	4.75	5.00		4.1
Consolidated interest coverage ratio							4.6

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Last day of any period, the ratio of Consolidated total debt on such day to the consolidated EBITDA for such period.

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- Definition

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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- Definition

Amount of increase (decrease) of the credit facility.

+ References

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.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
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