Fair Value of Financial Instruments - Assets Measured at Fair Value (Details) - USD ($) $ in Millions	3 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairments and loss on disposal		$ (2.8)	$ (13.5)	$ 0.0	$ (2.8)
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairments and loss on disposal					(2.8)
Equipment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairments and loss on disposal	$ (2.8)
Equipment | Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-lived intangible assets	0.3	0.3			0.3
Asset impairments and loss on disposal					(2.8)
Equipment | Fair Value, Measurements, Nonrecurring | Quoted prices in active markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-lived intangible assets	0.0	0.0			0.0
Equipment | Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-lived intangible assets	0.3	0.3			0.3
Equipment | Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-lived intangible assets	$ 0.0	$ 0.0			$ 0.0