CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY (DEFICIT) - 6 months ended Jun. 30, 2018 - USD ($) $ in Millions	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Balance at beginning of period at Dec. 31, 2017	$ 35.9	$ 3,712.1	$ (4,566.3)	$ (818.3)
Balance at beginning of period (in shares) at Dec. 31, 2017	51,783,000			51,782,735
Net income			182.3	$ 182.3
Activity related to stock plans		5.0		5.0
Recapitalization of convertible preferred stock to common stock	$ 0.4	349.4		349.8
Recapitalization of convertible preferred stock to common stock (in shares)	39,415,000
Issuance of common stock	$ 0.1	302.9		303.0
Issuance of common stock (in shares)	18,077,000
Balance at end of period at Jun. 30, 2018	$ 36.4	$ 4,369.4	$ (4,384.0)	$ 21.8
Balance at end of period (in shares) at Jun. 30, 2018	109,275,000			109,274,564