v3.19.3.a.u2
DEBT Narrative 2 (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Jun. 30, 2019
Debt Instrument [Line Items]        
Interest payments $ 183,800 $ 190,900 $ 163,600  
Amortization of debt issuance costs and debt discount 6,500 7,100 $ 5,000  
Revolving Credit Agreement [Member]        
Debt Instrument [Line Items]        
Maximum borrowing capacity $ 1,200,000     $ 1,400,000
Line of credit facility, covenant terms For the rolling period ending December 31, 2019, the maximum allowed consolidated debt coverage ratio (as defined in the Revolving Credit Agreement) may not exceed 5.00-to-1.00 and the minimum consolidated interest coverage ratio (as defined in the Revolving Credit Agreement), must not be less than 1.75-to-1.00. If we complete one or more acquisitions for aggregate net consideration of at least $50.0 million, our maximum consolidated debt coverage ratio will increase to 5.50-to-1.00 for two rolling periods. The maximum consolidated debt coverage ratio and minimum consolidated interest coverage ratio requirements may limit the amount we can borrow under the Revolving Credit Agreement to an amount less than the total amount available for borrowing. The Revolving Credit Agreement also contains customary restrictive covenants, such as limitations on indebtedness, liens, mergers, asset transfers and certain investing activities.      
Current remaining borrowing capacity $ 721,000      
Letters of credit issued 4,000      
Maximum letters of credit allowed $ 400,000      
Interest rate at period end 3.90%      
Long-term debt $ 475,000 $ 745,000    
Interest rate during period 4.40%