XML 63 R51.htm IDEA: XBRL DOCUMENT v3.3.0.814
Stock-Based Compensation - Summary of unrecognized stock-based compensation expense (Details)
$ in Millions
9 Months Ended
Sep. 30, 2015
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total unrecognized stock-based compensation expense $ 32.1
Weighted Average Remaining Vesting Period (Years) 2 years 7 months 24 days
Unrecognized stock option expense  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total unrecognized stock-based compensation expense $ 10.4
Weighted Average Remaining Vesting Period (Years) 2 years 8 months 12 days
Unrecognized PRSU expense  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total unrecognized stock-based compensation expense $ 12.9
Weighted Average Remaining Vesting Period (Years) 2 years 6 months 4 days
Unrecognized RSU/DSU expense  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Total unrecognized stock-based compensation expense $ 8.8
Weighted Average Remaining Vesting Period (Years) 2 years 9 months 18 days