Acquisitions - TBEI Acquisition (Details) - USD ($) $ in Millions			9 Months Ended
		Jun. 02, 2017	Sep. 30, 2017
Business Acquisition [Line Items]
Goodwill			$ 130.7
TBEI [Member]
Business Acquisition [Line Items]
Purchase price, inclusive of preliminary working capital adjustment	[1]	$ 269.7
Total consideration		269.7
Cash		2.6
Accounts receivable		23.4
Inventories		24.7
Prepaid expenses and other current assets		0.8
Rental equipment		0.8
Properties and equipment		23.4
Customer relationships	[2]	90.0
Trade names	[3]	60.0
Other intangible assets		3.0
Accounts payable		(18.7)
Accrued liabilities		5.6
Deferred tax liabilities		(65.4)
Net assets acquired		139.0
Goodwill	[4]		130.7
Purchase price funded under revolving credit facility		243.0
Business acquisition, goodwill, expected tax deductible amount		$ 0.0
Environmental Solutions
Business Acquisition [Line Items]
Goodwill			$ 130.7

[1] $243.0 million of the purchase price was funded through borrowings under the Company’s revolving credit facility, with the remainder being funded with existing cash on hand. The purchase price is subject to a final working capital adjustment that is expected to be finalized before the end of the fourth quarter of 2017.

[2] Represents the preliminary fair value assigned to customer relationships, which are considered to be definite-lived intangible assets, with a preliminary estimated useful life of approximately 12 years.

[3] Represents the preliminary fair value assigned to trade names, which are considered to be indefinite-lived intangible assets.

[4] Goodwill, which is not deductible for tax purposes, has been allocated to the Environmental Solutions Group on the basis that the synergies identified will primarily benefit this segment.