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Business Operations - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) Segment	Dec. 31, 2019 USD ($) acquisition	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) company	Dec. 31, 2018 USD ($) acquisition	Dec. 31, 2018 USD ($)	Dec. 31, 2018 USD ($) company	Dec. 31, 2017 USD ($) acquisition
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of reportable operating segments \| Segment	3
Number of operating segments \| Segment	3
Proceeds from sale of businesses			$ 0.0			$ 0.0		$ 8.7
Gain on sale of business			0.0			0.0		2.8
Intangible asset impairment								$ 13.0
Business Acquisition
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of companies acquired		2		2	14		12	14
Consideration transferred			24.9			30.1
Deferred purchase price payment			2.2
Consideration transferred	$ 24.9	$ 24.9	$ 24.9	$ 24.9	$ 30.1	$ 30.1	$ 30.1	$ 115.9
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Charlotte, North Carolina \| Collection Services Operation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of businesses								8.7
Gain on sale of business								1.4
Goodwill disposed of related to sale								$ 0.9