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Long-Term Debt - The Partnership Asset-Based Revolving Credit Facility (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 30, 2017
USD ($)
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
USD ($)
May 02, 2016
USD ($)
Feb. 28, 2015
USD ($)
Line of Credit Facility                    
Long-term debt   $ 1,436,357,000           $ 1,441,724,000    
Repayments of long-term debt   817,000,000 $ 81,000,000              
Debt finance cost $ 600,000                  
Loss on extinguishment of debt 300,000                  
Line of credit facility aggregate maximum borrowing capacity increase 250,000,000                  
Partnership’s term loan facility due May 2018 | Exterran Partners, L.P.                    
Line of Credit Facility                    
Long-term debt   $ 0           149,647,000   $ 150,000,000.0
Revolving Credit Facility                    
Line of Credit Facility                    
Repayments of long-term debt 648,400,000                  
Line of credit facility aggregate maximum borrowing capacity increase $ (25,000,000)                  
Revolving Credit Facility | Minimum                    
Line of Credit Facility                    
Commitment fee (percentage)   0.375%                
Revolving Credit Facility | Maximum                    
Line of Credit Facility                    
Commitment fee (percentage)   0.50%                
Revolving Credit Facility | Exterran Partners, L.P.                    
Line of Credit Facility                    
Debt repayment threshold   $ 50,000,000.0                
Total interest to EBITDA covenant   2.5                
Undrawn capacity under revolving credit facility   $ 437,000,000                
Revolving Credit Facility | Exterran Partners, L.P. | Maximum                    
Line of Credit Facility                    
Maximum senior secured debt to Adjusted EBITDA   3.50                
Undrawn capacity under revolving credit facility   $ 293,200,000                
Revolving Credit Facility | Exterran Partners, L.P. | Maximum | Forecast                    
Line of Credit Facility                    
Total Debt to EBITDA ratio       5.50 5.25 5.75 5.95      
Revolving Credit Facility | Exterran Partners, L.P. | Maximum | Forecast | Conditional Event                    
Line of Credit Facility                    
Total Debt to EBITDA ratio         5.5          
Revolving Credit Facility | Partnership’s revolving credit facility due March 2022                    
Line of Credit Facility                    
Line of credit facility, contract term ( in years) 5 years                  
Revolving credit facility borrowing capacity $ 1,100,000,000.0                  
Debt issuance cost 15,000,000                  
Long-term debt   663,000,000           0    
Revolving Credit Facility | Partnership’s revolving credit facility due May 2018 | Exterran Partners, L.P.                    
Line of Credit Facility                    
Long-term debt   0           $ 509,500,000 $ 825,000,000  
Commitment fee amount   $ 400,000 $ 400,000              
Swing Line                    
Line of Credit Facility                    
Line of credit facility aggregate maximum borrowing capacity increase $ 50,000,000                  
Line of Credit | LIBOR | Minimum                    
Line of Credit Facility                    
Variable rate on spread   2.00%                
Line of Credit | LIBOR | Maximum                    
Line of Credit Facility                    
Variable rate on spread   3.25%                
Line of Credit | Base Rate                    
Line of Credit Facility                    
Variable rate on spread   2.25%                
Line of Credit | Base Rate | Minimum                    
Line of Credit Facility                    
Variable rate on spread   1.00%                
Line of Credit | Base Rate | Maximum                    
Line of Credit Facility                    
Variable rate on spread   2.25%                
Line of Credit | Federal Funds Rate                    
Line of Credit Facility                    
Interest margin added to variable rate   0.005                
Line of Credit | 1-month LIBOR                    
Line of Credit Facility                    
Interest margin added to variable rate   0.01