Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenue	$ 7,623.2	$ 2,356.6	$ 702.3
Operating expenses
Cost of transportation and services	4,171.4	1,701.8	578.7
Direct operating expense	2,367.0	273.2	6.4
Sales, general and administrative expense	1,113.4	422.5	169.5
Total operating expenses	7,651.8	2,397.5	754.6
Operating loss	(28.6)	(40.9)	(52.3)
Other expense	3.1	0.4	0.5
Foreign currency loss	34.1	0.4	0.0
Interest expense	216.7	48.0	18.2
Loss before income tax benefit	(282.5)	(89.7)	(71.0)
Income tax benefit	(90.9)	(26.1)	(22.5)
Net loss	(191.6)	(63.6)	(48.5)
Preferred stock beneficial conversion charge	(52.0)	(40.9)	0.0
Cumulative preferred dividends	(2.8)	(2.9)	(3.0)
Net loss attributable to noncontrolling interests	0.5	0.0	0.0
Net loss attributable to common shareholders	$ (245.9)	$ (107.4)	$ (51.5)
Basic loss per share (in usd per share)	$ (2.65)	$ (2.00)	$ (2.26)
Diluted loss per share (in usd per share)	$ (2.65)	$ (2.00)	$ (2.26)
Weighted-average common shares outstanding
Basic weighted-average common shares outstanding	92,755,919	53,629,962	22,752,320
Diluted weighted-average common shares outstanding	92,800,000	53,600,000	22,800,000