Business Acquisitions (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
	Jul. 01, 2015	Nov. 30, 2015	Aug. 31, 2015	Aug. 31, 2015
Plasticos [Member]
Business Acquisition [Line Items]
Date of acquisition				Jul. 01, 2015
Amount of cash paid for business acquisitions	$ 111.0
Assets acquired			$ 168.5	$ 168.5
Goodwill				41.7
Intangible assets acquired			32.1	32.1
Liabilities assumed			49.7	49.7
Percentage of equity interest acquired	100.00%
Step acquisition gain			6.2
Previously held equity interest			1.6
Plasticos [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired			24.4	$ 24.4
Plasticos [Member] | Customer Relationships [Member] | Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life of intangible assets				10 years
Plasticos [Member] | Intellectual Property [Member]
Business Acquisition [Line Items]
Intangible assets acquired			6.5	$ 6.5
Plasticos [Member] | Intellectual Property [Member] | Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life of intangible assets				5 years
Plasticos [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets acquired			1.2	$ 1.2
Plasticos [Member] | Trade Names [Member] | Maximum [Member]
Business Acquisition [Line Items]
Estimated useful life of intangible assets				1 year
Five Additional Acquisitions Completed In Fiscal Year 2015 [Member]
Business Acquisition [Line Items]
Amount of cash paid for business acquisitions				$ 117.0
Assets acquired			167.8	167.8
Goodwill				42.4
Intangible assets acquired			31.7	31.7
Liabilities assumed			$ 50.8	$ 50.8
Two Acquisitions Completed In Fiscal Year 2016 [Member]
Business Acquisition [Line Items]
Amount of cash paid for business acquisitions		$ 72.8
Assets acquired		92.2
Goodwill		21.4
Intangible assets acquired		28.5
Liabilities assumed		19.4
Transaction costs		1.0
Two Acquisitions Completed In Fiscal Year 2016 [Member] | EMS [Member]
Business Acquisition [Line Items]
Goodwill		21.4
Hanson [Member] | Scenario, Forecast [Member]
Business Acquisition [Line Items]
Amount of cash paid for business acquisitions		$ 172.5