XML 99 R82.htm IDEA: XBRL DOCUMENT v3.5.0.2
Stockholders' Equity (Additional Information) (Details 1) - USD ($)
3 Months Ended 12 Months Ended
May 31, 2014
Aug. 31, 2016
Aug. 31, 2015
Aug. 31, 2014
Feb. 28, 2011
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Share options, grants in period     0 0  
Unrecognized compensation related to share-based compensation costs   $ 53,600,000      
Total fair value of options vested   0 $ 2,800,000 $ 0  
Reversal to stock-based compensation expense   $ 7,500,000 $ 5,200,000 $ 45,800,000  
Unrecognized compensation related to share-based compensation costs, weighted average period of recognition   1 year 6 months      
Common stock, shares issued   249,763,699 246,680,008    
Performance-based restricted stock units [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Restricted stock units awarded   1,300,000      
Performance goal full achievement   100.00%      
Time-based restricted stock units [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Award vesting period   3 years      
Restricted stock units awarded   2,600,000      
Market based restricted stock units [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Restricted stock units awarded   400,000      
Minimum | Performance-based restricted stock units [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Award vesting period   3 years      
Maximum | Performance-based restricted stock units [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Award vesting period   5 years      
Possibility One | Maximum | Performance-based restricted stock units [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Award vesting percentage   100.00%      
Possibility Two | Performance-based restricted stock units [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Award vesting percentage   150.00%      
Employee Stock Purchase Plan [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Eligibility period for employees to participate in ESPP   90 days      
Maximum percentage of an employees salary that can be used to purchase shares under the ESPP   10.00%      
Percentage for fair market value fixed for pricing   85.00%      
Shares issued under ESPP   1,246,947 1,005,916 1,077,071  
Common stock, shares issued   11,603,855      
Options [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Total intrinsic value of options exercised   $ 500,000 $ 1,000,000 $ 100,000  
Unrecognized compensation related to share-based compensation costs   $ 0      
Employee Stock Option [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Share options, grants in period   0 0    
Stock Appreciation Rights [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Share options, grants in period   0 400,000    
Aftermarket services (AMS) [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Awards vesting 200,000        
Stock-based compensation expense accelerated $ 2,400,000        
Plan 2011          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Maximum aggregate number of shares subject to awards         18,350,000
Plan 2011 | Employee Stock Purchase Plan [Member]          
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]          
Maximum aggregate number of shares subject to awards         6,000,000