CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' DEFICIT - 9 months ended Sep. 30, 2017 - USD ($) $ in Millions	Common Shares	Management D Units Class D series	Additional Paid-in Capital (Deficit)	Accumulated Deficit	Total
Balances at January 1, 2017 at Dec. 31, 2016	$ 0.7		$ (58.8)	$ (659.9)	$ (718.0)
Balances at January 1, 2017 (in shares) at Dec. 31, 2016	66,498,762				66,498,762
Balances at January 1, 2017 (in units) at Dec. 31, 2016		201,696
Increase (Decrease) in Shareholders' Deficit
Repurchase of old management units			(8.8)		$ (8.8)
Cancellation of management D units (in units)		(201,696)
Proceeds from issuance of common stock, net of issuance costs (note 7)	$ 0.2		334.5		334.7
Proceeds from issuance of common stock, net of issuance costs (note 7) (in shares)	20,970,589
Contribution from former Parent			20.3		20.3
Stock-based compensation			8.3		8.3
Stock-based compensation (in shares)	1,302,359
Other			(0.1)		(0.1)
Net income				75.3	75.3
Balances at September 30, 2017 at Sep. 30, 2017	$ 0.9		$ 295.4	$ (584.6)	$ (288.3)
Balances at September 30, 2017 (in shares) at Sep. 30, 2017	88,771,710				88,771,710