XML 46 R34.htm IDEA: XBRL DOCUMENT v3.5.0.2
Share-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
9 Months Ended
Feb. 25, 2016
Sep. 30, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average period for remaining recognition of compensation expense   1 year 8 months 12 days  
Unrecognized compensation cost related to nonvested share-based compensation arrangements   $ 36.9  
Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Estimated liabilities for share-based compensation awards classified as short-term   9.8 $ 7.6
Estimated liabilities for share-based compensation awards classified as long-term   $ 10.6 $ 11.4
February 25, 2016 Grant [Member] | Restricted Share Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based awards, grant-date fair value $ 19.3    
Awards vesting period   3 years  
Aggregate grant date fair value, net of estimated forfeitures $ 18.2    
Weighted-average period for remaining recognition of compensation expense 2 years 7 months 6 days    
February 25, 2016 Grant [Member] | Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based awards, grant-date fair value $ 8.6    
Awards vesting period   3 years  
Target value of P-Units (in dollars per unit)   $ 100  
February 25, 2016 Grant [Member] | Performance Shares [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected payout on P-Units (in dollars per unit)   $ 0  
February 25, 2016 Grant [Member] | Performance Shares [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards vesting period   3 years  
Expected payout on P-Units (in dollars per unit)   $ 200  
February 25, 2016 Grant [Member] | Performance Shares [Member] | One-Year Period ending December 31, 2016 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance unit value percentage determined on an annual performance   25.00%  
Period for value determination   1 year  
February 25, 2016 Grant [Member] | Performance Shares [Member] | One-Year Period Ending December 31, 2017 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance unit value percentage determined on an annual performance   25.00%  
Period for value determination   1 year  
February 25, 2016 Grant [Member] | Performance Shares [Member] | One-Year Period Ending December 31, 2018 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance unit value percentage determined on an annual performance   25.00%  
Period for value determination   1 year  
February 25, 2016 Grant [Member] | Performance Shares [Member] | Three-Year Period Ending December 31, 2018 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Period for value determination   3 years  
Performance unit value percentage determined on total vesting period performance   25.00%