Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Awards Stock-Based Awards (Summary of Stock-Based Awards Granted) (Details)

v3.5.0.2
Stock-Based Awards Stock-Based Awards (Summary of Stock-Based Awards Granted) (Details)
9 Months Ended
Sep. 30, 2016
$ / shares
shares
Stock appreciation rights  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Awards Granted 928,990
Weighted Average per Share Fair Value | $ / shares $ 7.31
Restricted stock units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Awards Granted 264,774
Weighted Average per Share Fair Value | $ / shares $ 45.52
Performance share units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Awards Granted 92,290
Weighted Average per Share Fair Value | $ / shares $ 54.06
Employee stock purchase plan options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Awards Granted 61,091
Weighted Average per Share Fair Value | $ / shares $ 11.70
Dividend equivalents due to quarterly dividend  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of Awards Granted 19,438