Annual report pursuant to Section 13 and 15(d)

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

v3.4.0.3
NET INCOME (LOSS) PER SHARE - Narrative (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Oct. 31, 2012
Nov. 15, 2010
Jun. 30, 2009
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Warrant Expiration Date From Date of Issuance 7 years          
Warrant Expiration Date, After Change of Control 3 years          
Stock options            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Anti-dilutive shares excluded from anti-dilutive shares excluded from computations (in shares) 4.5 2.4 12.8      
Restricted Stock Units            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Anti-dilutive shares excluded from anti-dilutive shares excluded from computations (in shares) 12.1 0.1 11.0      
EMC Corporation            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Number of shares called by warrants (in shares)           10.0
Exercise price (usd per share)           $ 0.38
3.50% Convertible Subordinated Debt            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Stated interest rate (as a percent) 3.50% 3.50% 3.50%      
Conversion price (usd per share) $ 4.33 $ 4.33 $ 4.33   $ 4.33  
Anti-dilutive shares excluded from anti-dilutive shares excluded from computations (in shares) 10.0 29.0 31.1      
Anti-dilutive income excluded from computations $ 1.8 $ 5.3 $ 5.7      
4.50% Convertible Subordinated Debt            
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]            
Stated interest rate (as a percent) 4.50% 4.50% 4.50%      
Conversion price (usd per share) $ 1.65 $ 1.65 $ 1.65 $ 1.65    
Anti-dilutive shares excluded from anti-dilutive shares excluded from computations (in shares) 42.5 42.5 42.5      
Anti-dilutive income excluded from computations $ 3.6 $ 3.6 $ 3.6