XML 104 R89.htm IDEA: XBRL DOCUMENT v3.20.2
Incentive Plan (Schedule of Compensation Expense) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 21 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Dec. 31, 2019
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Granted (shares)     126,933      
Long-term incentive units            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Deferred compensation, expensed $ 3.3 $ 2.4 $ 9.6 $ 6.2    
Deferred compensation, capitalized 0.1   0.2 0.1    
Unearned Compensation 18.6   $ 18.6   $ 18.6 $ 15.4
Expected period to recognize unearned compensation (in years)     2 years 2 months 12 days      
Granted (shares)     126,933      
Vesting of restricted common units, net (units)     92,111      
Long-term incentive units | Minimum            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Award vesting period     2 years      
Long-term incentive units | Maximum            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Award vesting period     4 years      
Market performance-based awards            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Deferred compensation, expensed 6.8 3.1 $ 18.2 9.7    
Deferred compensation, capitalized 0.1 $ 0.2 0.6 $ 0.6    
Unearned Compensation $ 40.4   $ 40.4   $ 40.4 28.4
Expected period to recognize unearned compensation (in years)     2 years 6 months      
Market performance-based awards | Minimum            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Award vesting period         2 years  
Market performance-based awards | Maximum            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Award vesting period 3 years 3 years 3 years 3 years    
Restricted stock            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Deferred compensation, expensed $ 3.8 $ 2.9 $ 10.4 $ 8.6    
Deferred compensation, capitalized 0.8 $ 0.7 2.3 $ 2.1    
Unearned Compensation 47.0   $ 47.0   $ 47.0 $ 29.1
Expected period to recognize unearned compensation (in years)     2 years 6 months      
Granted (shares)     824,241      
Vesting of restricted common units, net (units)     265,238      
Restricted stock | Maximum            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Award vesting period     4 years      
Interxion awards            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Deferred compensation, expensed 4.8   $ 14.9      
Unearned Compensation $ 31.4   $ 31.4   $ 31.4  
Expected period to recognize unearned compensation (in years)     2 years 4 months 24 days      
Granted (shares)     567,810      
Performance-based Class D Units            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Granted (shares) 58,561 58,561 58,561 58,561    
Performance-based restricted stock units            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Granted (shares) 6,148 6,148 6,148 6,148    
Time-based profits interest units            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Granted (shares) 22,426 22,426 22,426 22,426    
Time-based restricted stock units            
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]            
Granted (shares)         3,209