text: Under the ESPP, employees may make payroll deductions of up to 10% of their base and bonus compensation. At the end of each six-month 
  offering period, participants may apply their accumulated payroll deductions toward the purchase of shares of our common stock at 90% of 
  the fair market value on the last day of the offer period. As of January 31, 2015, we had 12.6 shares authorized and 3.3 shares available for 
  issuance under the ESPP. We issued 0.3 shares under the ESPP during 2014. At the end of both 2014 and 2013, we had current liabilities of 
  $6 for future purchases of shares under the ESPP. 
  
  The 2002 Nonemployee Director Stock Incentive Plan authorizes the grant of stock awards to our nonemployee directors. These awards may 
  be deferred or issued in the form of restricted or unrestricted stock, non-qualified stock options or stock appreciation rights. As of January 31, 
  2015, we had 0.9 shares authorized and 0.5 shares available for issuance under this plan. In 2014, we deferred shares with a total expense 
  of less than $1. 