CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS’ DEFICIT - 9 months ended Sep. 30, 2018 - USD ($) $ in Millions	Common Stock	Treasury Stock at Cost	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Total
Balances at beginning of period (in shares) at Dec. 31, 2017	88,426,742					88,426,742
Balances at beginning of period at Dec. 31, 2017	$ 0.9	$ (4.8)	$ 299.9		$ (500.4)	$ (204.4)
Increase (Decrease) in Stockholders' Deficit
Impact of change in accounting policy					9.1	9.1
Changes in accumulated other comprehensive income				$ 5.4		5.4
Stock-based compensation			11.0			$ 11.0
Issuance of restricted stock (in shares)	1,685,775
Purchase of shares (in shares)	(7,417,667)					(7,417,667)
Purchase of shares		(73.2)				$ (73.2)
Other			(0.2)			(0.2)
Net loss					(147.0)	$ (147.0)
Balances at end of period (in shares) at Sep. 30, 2018	82,694,850					82,694,850
Balances at end of period at Sep. 30, 2018	$ 0.9	$ (78.0)	$ 310.7	$ 5.4	$ (638.3)	$ (399.3)