XML 70 R56.htm IDEA: XBRL DOCUMENT v3.5.0.2
Accounting for Share-Based Compensation 6 (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]      
Capitalized share-based compensation costs $ 0 $ 0  
Stock options issued 1.0 0.8  
Computation of expected life, Simplified method The Company’s computation of expected life was determined based on the simplified method (the average of the vesting period and option term).    
Employee Stock Purchase Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of stock closing price on last day of offer period that ESPP participants can purchase Company stock     95.00%
Number of shares issued under ESPP     0.1
Share price issued under ESPP (in dollars per share)     $ 31.19
Number of shares available for future issuances under ESPP 29.1   29.1
Restricted Stock Awards (RSAs) | 1-year PSUs under Incentive Plans | Grant Date      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting percentage 34.00%    
Restricted Stock Awards (RSAs) | 1-year PSUs under Incentive Plans | First Anniversary      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting percentage 33.00%    
Restricted Stock Awards (RSAs) | 1-year PSUs under Incentive Plans | Second Anniversary      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting percentage 33.00%    
Restricted Stock Awards (RSAs) | 1-year PSUs under Sales Retention Equity Programs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period from grant date (in years) 3 years    
Restricted Stock Units (RSUs) | 1-year PSUs under Incentive Plans | Grant Date      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting percentage 34.00%    
Restricted Stock Units (RSUs) | 1-year PSUs under Incentive Plans | First Anniversary      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting percentage 33.00%    
Restricted Stock Units (RSUs) | 1-year PSUs under Incentive Plans | Second Anniversary      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting percentage 33.00%    
Restricted Stock Units (RSUs) | 1-year PSUs under Sales Retention Equity Programs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period from grant date (in years) 3 years