XML 87 R75.htm IDEA: XBRL DOCUMENT v3.7.0.1
Equity Incentive Programs (Restricted Stock and Restricted Stock Unit Activity Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated future compensation expense $ 27.0  
Restricted Stock and Restricted Stock Units (RSUs) [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of days dividends will be paid after vesting, maximum 45 days  
Award vesting period 3 years  
Compensation expense $ 5.1 $ 4.4
Estimated future compensation expense 27.0  
Estimated Future Expense in 2017 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated future compensation expense 10.2  
Estimated Future Expense in 2017 [Member] | Restricted Stock and Restricted Stock Units (RSUs) [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated future compensation expense 10.2  
Estimated Future Expense in 2018 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated future compensation expense 9.9  
Estimated Future Expense in 2018 [Member] | Restricted Stock and Restricted Stock Units (RSUs) [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated future compensation expense 9.9  
Estimated Future Expense in 2019 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated future compensation expense 6.0  
Estimated Future Expense in 2019 [Member] | Restricted Stock and Restricted Stock Units (RSUs) [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated future compensation expense 6.0  
Estimated Future Expense in 2020 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated future compensation expense 0.9  
Estimated Future Expense in 2020 [Member] | Restricted Stock and Restricted Stock Units (RSUs) [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Estimated future compensation expense $ 0.9