v2.4.0.6
Equity Based Employee Benefit Plans Performance Shares (Details) (USD $)
1 Months Ended 12 Months Ended
Aug. 31, 2015
Jul. 31, 2010
Mar. 31, 2010
Jan. 28, 2012
Jan. 29, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period   600,000 500,000 8,377,845  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period August 2015 3 3    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 19.27   $ 15.93  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights Percentage       58.20% 93.00%