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Equity Incentive Programs (PS and PSU Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Estimated future compensation expense $ 20,500,000   $ 20,500,000    
Performance Shares [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted (in shares) 0 0 0 0  
Performance Share Units [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted (in shares) 0 0 0 0  
Performance Shares and Performance Share Units [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Award vesting period         3 years
Compensation expense $ 0 $ (300,000) $ 0 $ 200,000  
Estimated future compensation expense $ 0   $ 0