Quarterly report pursuant to Section 13 or 15(d)

NET INCOME (LOSS) PER SHARE - Narrative (Details)

v3.3.0.814
NET INCOME (LOSS) PER SHARE - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Stock options        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share 4.6 2.3 4.7 7.0
Restricted stock        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share 12.1 0.2 12.6 12.0
4.50% convertible subordinated notes        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share 42.5 42.5 42.5 42.5
Interest rate, per annum on the principal amount 4.50% 4.50% 4.50% 4.50%
Antidilutive income excluded from computation of earnings per share $ 0.9 $ 0.9 $ 1.8 $ 1.8
3.50% convertible subordinated notes        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from computation of earnings per share 19.3 30.9 19.3 30.9
Interest rate, per annum on the principal amount 3.50% 3.50% 3.50% 3.50%
Antidilutive income excluded from computation of earnings per share $ 0.9 $ 1.4 $ 1.8 $ 2.8