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Risk Management - Energy Commodity Price Risk Management (Details) - Energy commodity derivative contracts | 6 Months Ended
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Jun. 30, 2020 MMBbls Bcf
Short | Derivatives designated as hedging instruments | Crude oil fixed price |
Derivative [Line Items] |
Net open position | 21.5
Short | Derivatives designated as hedging instruments | Crude oil basis |
Derivative [Line Items] |
Net open position | 4.1
Short | Derivatives designated as hedging instruments | Natural gas fixed price |
Derivative [Line Items] |
Net open position | Bcf | 42.9
Short | Derivatives designated as hedging instruments | Natural gas basis |
Derivative [Line Items] |
Net open position | Bcf | 43.0
Short | Derivatives designated as hedging instruments | NGL fixed price |
Derivative [Line Items] |
Net open position | 1.1
Short | Derivatives not designated as hedging instruments | Crude oil fixed price |
Derivative [Line Items] |
Net open position | 3.0
Short | Derivatives not designated as hedging instruments | Crude oil basis |
Derivative [Line Items] |
Net open position | 1.7
Short | Derivatives not designated as hedging instruments | Natural gas fixed price |
Derivative [Line Items] |
Net open position | Bcf | 10.7
Short | Derivatives not designated as hedging instruments | NGL fixed price |
Derivative [Line Items] |
Net open position | 1.7
Long | Derivatives not designated as hedging instruments | Natural gas basis |
Derivative [Line Items] |
Net open position | Bcf | 16.1

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