Net Loss Per Share	6 Months Ended
Sep. 30, 2011
Net Loss Per Share [Abstract]
Net Loss Per Share	(16) NET LOSS PER SHARE As a result of our net loss for the three and six months ended September 30, 2011, we have excluded certain equity-based instruments from the diluted loss per share calculation as their inclusion would have had an antidilutive effect. Had we reported net income for these periods, an additional 6 million shares and 7 million shares of common stock would have been included in the number of shares used to calculate diluted earnings per share, respectively. Options to purchase, restricted stock units and restricted stock to be released in the amount of 10 million shares of common stock were excluded from the computation of diluted shares for the three and six months ended September 30, 2011 as their inclusion would have had an antidilutive effect. For the three and six months ended September 30, 2011, the weighted-average exercise prices of these shares were $34.88 and $33.98 per share, respectively. As a result of our net loss for the three and six months ended September 30, 2010, we have excluded certain equity-based instruments from the diluted loss per share calculation as their inclusion would have had an antidilutive effect. Had we reported net income for these periods, an additional 4 million shares of common stock in each period would have been included in the number of shares used to calculate diluted earnings per share. Options to purchase, restricted stock units and restricted stock to be released in the amount of 24 million shares and 20 million shares of common stock were excluded from the computation of diluted shares for the three and six months ended September 30, 2010, respectively, as their inclusion would have had an antidilutive effect. For the three and six months ended September 30, 2010, the weighted-average exercise prices of these shares were $18.46 and $23.19 per share, respectively. Potentially dilutive shares of common stock related to our 0.75% Convertible Senior Notes due 2016, which have a conversion price of $31.74 per share and the associated Warrants, which have a conversion price of $41.14 per share were excluded from the computation of diluted loss per share for the three and six months ended September 30, 2011 as their inclusion would have had an antidilutive effect resulting from the conversion price and our net loss for both periods. The Convertible Note Hedge was excluded from the calculation of diluted shares as the impact is always considered antidilutive since the call option would be exercised by us when the exercise price is lower than the market price. See Note 12 for additional information related to our 0.75% Convertible Senior Notes due 2016 and related Convertible Note Hedge and Warrants.

Net Loss Per Share

6 Months Ended

Sep. 30, 2011

(16) NET LOSS PER SHARE

As a result of our net loss for the three and six months ended September 30, 2011, we have excluded certain equity-based instruments from the diluted loss per share calculation as their inclusion would have had an antidilutive effect. Had we reported net income for these periods, an additional 6 million shares and 7 million shares of common stock would have been included in the number of shares used to calculate diluted earnings per share, respectively. Options to purchase, restricted stock units and restricted stock to be released in the amount of 10 million shares of common stock were excluded from the computation of diluted shares for the three and six months ended September 30, 2011 as their inclusion would have had an antidilutive effect. For the three and six months ended September 30, 2011, the weighted-average exercise prices of these shares were $34.88 and $33.98 per share, respectively.

As a result of our net loss for the three and six months ended September 30, 2010, we have excluded certain equity-based instruments from the diluted loss per share calculation as their inclusion would have had an antidilutive effect. Had we reported net income for these periods, an additional 4 million shares of common stock in each period would have been included in the number of shares used to calculate diluted earnings per share. Options to purchase, restricted stock units and restricted stock to be released in the amount of 24 million shares and 20 million shares of common stock were excluded from the computation of diluted shares for the three and six months ended September 30, 2010, respectively, as their inclusion would have had an antidilutive effect. For the three and six months ended September 30, 2010, the weighted-average exercise prices of these shares were $18.46 and $23.19 per share, respectively.

Potentially dilutive shares of common stock related to our 0.75% Convertible Senior Notes due 2016, which have a conversion price of $31.74 per share and the associated Warrants, which have a conversion price of $41.14 per share were excluded from the computation of diluted loss per share for the three and six months ended September 30, 2011 as their inclusion would have had an antidilutive effect resulting from the conversion price and our net loss for both periods. The Convertible Note Hedge was excluded from the calculation of diluted shares as the impact is always considered antidilutive since the call option would be exercised by us when the exercise price is lower than the market price. See Note 12 for additional information related to our 0.75% Convertible Senior Notes due 2016 and related Convertible Note Hedge and Warrants.