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Long-Term Debt - Narrative (Details)
1 Months Ended 9 Months Ended
Sep. 24, 2021
USD ($)
Apr. 30, 2021
USD ($)
Feb. 26, 2021
USD ($)
Oct. 21, 2020
USD ($)
Dec. 11, 2018
USD ($)
Sep. 30, 2021
USD ($)
May 31, 2021
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument                  
Increase (decrease) in accounts receivable               $ 708,100,000  
Outstanding principal           $ 4,427,300,000   4,427,300,000 $ 4,632,300,000
Amarillo Rattler, LLC                  
Debt Instrument                  
Payments to acquire gathering and processing system   $ 50,000,000              
Term Loan Due 2021                  
Debt Instrument                  
Line of credit facility, consolidated indebtedness to consolidated EBITDA, ratio         5.5        
Outstanding principal           150,000,000.0   150,000,000.0 350,000,000.0
Letters of credit                  
Debt Instrument                  
Additional amount available (not to exceed)               1,750,000,000  
Line of credit facility, fair value of amount outstanding           0   0  
AR Facility due 2024                  
Debt Instrument                  
Outstanding principal           245,000,000.0   245,000,000.0 $ 250,000,000.0
Minimum | Term Loan Due 2021                  
Debt Instrument                  
Conditional Acquisition Purchase Price         $ 50,000,000        
Maximum | Term Loan Due 2021                  
Debt Instrument                  
Line of credit facility, consolidated indebtedness to consolidated EBITDA, ratio         5.5        
Letter of Credit | ENLC | Letters of credit                  
Debt Instrument                  
Line of credit facility, fair value of amount outstanding           41,100,000   41,100,000  
Line of Credit | Asset-backed Securities                  
Debt Instrument                  
Maximum borrowing capacity $ 350,000,000   $ 300,000,000 $ 250,000,000   350,000,000   $ 350,000,000  
Line of credit facility, increase in period $ 50,000,000   $ 50,000,000            
Drawn fee percentage 1.10%   1.25% 1.625%       1.10%  
Line of Credit | LIBOR | Minimum | Asset-backed Securities                  
Debt Instrument                  
Variable rate     0.00% 0.375%          
Unsecured Debt | Term Loan Due 2021                  
Debt Instrument                  
Repayments of borrowings           100,000,000 $ 100,000,000    
Face amount           $ 150,000,000   $ 150,000,000  
Unsecured Debt | Letters of credit                  
Debt Instrument                  
Line of credit facility, consolidated indebtedness to consolidated EBITDA, during an acquisition period, ratio   5.5              
Unsecured Debt | Minimum | Letters of credit                  
Debt Instrument                  
Conditional Acquisition Purchase Price               $ 50,000,000  
Unsecured Debt | Maximum | Letters of credit                  
Debt Instrument                  
Line of credit facility, consolidated indebtedness to consolidated EBITDA, during an acquisition period, ratio           5.5   5.5  
Letter of Credit | Letters of credit                  
Debt Instrument                  
Maximum borrowing capacity           $ 500,000,000   $ 500,000,000  
Covenant, percentage of letter of credits guaranteed           105.00%   105.00%