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Revenue Recognition (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Revenue from External Customer [Line Items]
Contract assets	$ 0.0
Trade accounts receivable increase	36.2
Deferred revenue	31.0
Deferred Revenue, revenue recognized		$ 1.0
Capitalized contract cost, amortization	$ 0.1
Contract operations revenue
Revenue from External Customer [Line Items]
Services generally billed in number of months in advance of service commencement	1 month
Payment due after receipt of invoice, period	30 days
Contract operations revenue | Minimum
Revenue from External Customer [Line Items]
Typical initial contract terms	6 months
Contract operations revenue | Maximum
Revenue from External Customer [Line Items]
Typical initial contract terms	5 years
Retail parts and services revenue
Revenue from External Customer [Line Items]
Payment due after receipt of invoice, period	30 days
Predecessor
Revenue from External Customer [Line Items]
Contract assets		0.0
Capitalized contract cost, costs to fulfill a contract		0.0
Capitalized contract cost, amortization		$ 0.0

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