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DEBT - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2018
May 03, 2018
Dec. 31, 2017
Oct. 31, 2017
Debt Instrument [Line Items]          
Maximum borrowing capacity     $ 2,200,000,000.0    
Previously capitalized financing costs, written-off $ 800,000        
Revolving Credit Facility          
Debt Instrument [Line Items]          
Maximum borrowing capacity     1,300,000,000    
Line of credit facility outstanding $ 590,000,000 $ 590,000,000   $ 655,000,000  
Weighted average interest rate on debt 3.80% 3.80%   3.70%  
Revolving Credit Facility | Fair Value, Inputs, Level 2          
Debt Instrument [Line Items]          
Line of credit facility, fair value of amount outstanding $ 562,700,000 $ 562,700,000      
Standby Letters of Credit          
Debt Instrument [Line Items]          
Maximum borrowing capacity     60,000,000    
Swingline Loan          
Debt Instrument [Line Items]          
Maximum borrowing capacity     60,000,000    
Term Loan Facility | Secured Debt          
Debt Instrument [Line Items]          
Maximum borrowing capacity     $ 900,000,000    
Term Loan Facility | Secured Debt | Fair Value, Inputs, Level 2          
Debt Instrument [Line Items]          
Line of credit facility, fair value of amount outstanding 868,600,000 868,600,000      
Senior Credit Facility          
Debt Instrument [Line Items]          
Incremental financing costs capitalized 4,200,000 4,200,000   $ 500,000  
Available borrowings under senior secured revolving credit facility 709,400,000 $ 709,400,000      
Senior Credit Facility | Minimum          
Debt Instrument [Line Items]          
Line of credit, commitment fee percentage   0.15%      
Senior Credit Facility | Maximum          
Debt Instrument [Line Items]          
Line of credit, commitment fee percentage   0.30%      
Senior Credit Facility | Eurodollar | Minimum          
Debt Instrument [Line Items]          
Interest rates available to the Company at its option   1.00%      
Senior Credit Facility | Eurodollar | Maximum          
Debt Instrument [Line Items]          
Interest rates available to the Company at its option   1.75%      
Senior Credit Facility | Federal Funds          
Debt Instrument [Line Items]          
Interest rates available to the Company at its option   0.50%      
Senior Credit Facility | Federal Funds | Minimum          
Debt Instrument [Line Items]          
Interest rates available to the Company at its option   0.00%      
Senior Credit Facility | Federal Funds | Maximum          
Debt Instrument [Line Items]          
Interest rates available to the Company at its option   0.75%      
Senior Credit Facility | Prime Rate | Minimum          
Debt Instrument [Line Items]          
Interest rates available to the Company at its option   0.00%      
Senior Credit Facility | Prime Rate | Maximum          
Debt Instrument [Line Items]          
Interest rates available to the Company at its option   0.75%      
Senior Credit Facility | One Month Eurodollar Rate          
Debt Instrument [Line Items]          
Interest rates available to the Company at its option   1.00%      
Senior Credit Facility | One Month Eurodollar Rate | Minimum          
Debt Instrument [Line Items]          
Interest rates available to the Company at its option   0.00%      
Senior Credit Facility | One Month Eurodollar Rate | Maximum          
Debt Instrument [Line Items]          
Interest rates available to the Company at its option   0.75%      
Senior Credit Facility | Standby Letters of Credit          
Debt Instrument [Line Items]          
Line of credit facility outstanding 0 $ 0      
Letters of credit outstanding 600,000 600,000   600,000  
Term Loan A-1 | Secured Debt          
Debt Instrument [Line Items]          
Incremental financing costs capitalized         $ 19,100,000
Term Loan A | Secured Debt          
Debt Instrument [Line Items]          
Line of credit facility outstanding $ 900,000,000 $ 900,000,000   $ 1,200,000,000  
Weighted average interest rate on debt 3.70% 3.70%   3.60%