CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Revenue	$ 297.8	$ 311.2	$ 895.3	$ 921.0
Costs and expenses:
Operating (excluding depreciation and amortization)	153.2	167.1	470.4	499.1
Selling, general and administrative	38.1	32.6	100.9	86.2
Depreciation and amortization	49.0	49.6	150.1	155.0
Management fee to related party		0.4	1.0	1.3
Total costs and expenses	240.3	249.7	722.4	741.6
Income from operations	57.5	61.5	172.9	179.4
Other income (expense):
Interest expense	(32.2)	(52.9)	(122.0)	(162.3)
Loss on early extinguishment of debt (note 6)	(26.1)	(28.1)	(32.1)	(30.6)
Gain on sale of assets (note 4)			38.4
Unrealized gain on derivative instruments, net				2.3
Other income, net	0.3	1.9	1.7	2.0
Income (loss) before provision for income taxes	(0.5)	(17.6)	58.9	(9.2)
Income tax benefit (expense) (note 10)	(1.6)	(2.7)	16.4	7.4
Net income (loss)	$ (2.1)	$ (20.3)	$ 75.3	$ (1.8)
Basic and diluted earnings (loss) per common shares
Basic (in dollars per share)	$ (0.02)	$ (0.31)	$ 0.99	$ (0.03)
Diluted (in dollars per share)	$ (0.02)	$ (0.31)	$ 0.99	$ (0.03)
Weighted-average common shares outstanding
Basic (in shares)	86,973,345	66,525,044	76,014,568	65,605,874
Diluted (in shares)	86,973,345	66,525,044	76,096,401	65,605,874