Acquisitions - Business Combination Transfer Purchase Price Consideration (Details) - USD ($) $ in Millions	1 Months Ended	5 Months Ended
	Mar. 31, 2018	Feb. 28, 2019
Mountain Valley Acquisition
Business Acquisition [Line Items]
Cash paid to sellers		$ 62.5
Cash paid on behalf of sellers for sellers’ transaction expenses		1.8
Cash paid to retire outstanding debt on behalf of sellers		16.1
Working capital settlement		(0.4)
Total consideration		$ 80.0
Crystal Rock Acquisition
Business Acquisition [Line Items]
Cash paid to sellers	$ 20.7
Cash paid on behalf of sellers for sellers’ transaction expenses	0.8
Total consideration	$ 37.7