Acquisitions - OSW Acquisition (Details) - USD ($) $ in Millions			9 Months Ended
		Feb. 17, 2021	Sep. 30, 2021
Business Acquisition [Line Items]
Goodwill acquired during the period			$ 14.3
Finite-lived intangible asset, useful life			12 years
Customer relationships
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life			12 years
OSW
Business Acquisition [Line Items]
Purchase price, inclusive of preliminary closing adjustments	[1]	$ 53.5
Total consideration		53.5
Cash		1.3
Accounts receivable		3.6
Inventories		8.4
Prepaid expenses and other current assets		0.7
Properties and equipment		5.8
Operating lease right-of-use assets		12.3
Customer relationships	[2]	16.9
Trade names	[3]	10.3
Other intangible assets		0.4
Operating lease liabilities		(12.3)
Accounts payable		(3.8)
Accrued liabilities		(1.9)
Customer deposits		(0.8)
Finance lease obligations		(1.7)
Net assets acquired		39.2
Goodwill acquired during the period	[4]	$ 14.3
OSW | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life		12 years

[1] The initial purchase price, which is subject to certain post-closing adjustments, including working capital, was funded through existing cash and borrowings under the Company’s revolving credit facility.

[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, the majority of which is tax-deductible, has been allocated to the Environmental Solutions Group on the basis that the synergies identified will primarily benefit this segment.