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Risk Management Activities - Schedule of Derivative Instruments (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
USD ($)
$ / bbl
Jun. 30, 2022
MMBTU
$ / bbl
MBbls
Crude Oil | Price Swaps    
Derivatives, Fair Value [Line Items]    
Cash paid for settlement of contracts | $ $ 593  
Crude Oil | Derivative Contracts - January through March (closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   140
Weighted Average Price 65.58 65.58
Crude Oil | Offsetting Derivative Contracts - January through March (closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   0
Weighted Average Price 0 0
Crude Oil | Derivative Contracts - April through June (closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   140
Weighted Average Price 65.62 65.62
Crude Oil | Offsetting Derivative Contracts - April through June (closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   0
Weighted Average Price 0 0
Crude Oil | Derivative Contracts - July through September | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   140
Weighted Average Price 65.59 65.59
Crude Oil | OffSetting Derivative Contracts - July through September | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   0
Weighted Average Price 0 0
Crude Oil | Derivative Contracts - October through December (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   53
Weighted Average Price 66.11 66.11
Crude Oil | OffSetting Derivative Contracts - October and December (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   0
Weighted Average Price 0 0
Crude Oil | Derivative Contracts - October through December | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   87
Weighted Average Price 65.41 65.41
Crude Oil | OffSetting Derivative Contracts - October and December | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   87
Weighted Average Price 88.85 88.85
Crude Oil | Derivative Contracts - January through February (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   7
Weighted Average Price 69.51 69.51
Crude Oil | OffSetting Derivative Contracts - January Through February (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   0
Weighted Average Price 0 0
Crude Oil | Derivative Contracts - January through February | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   143
Weighted Average Price 67.84 67.84
Crude Oil | OffSetting Derivative Contracts - January Through February | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   6
Weighted Average Price 102.26 102.26
Crude Oil | Derivative Contracts - March (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   37
Weighted Average Price 67.35 67.35
Crude Oil | OffSetting Derivative Contracts - March (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   0
Weighted Average Price 0 0
Crude Oil | Derivative Contracts - March | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   113
Weighted Average Price 68.11 68.11
Crude Oil | OffSetting Derivative Contracts - March | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   6
Weighted Average Price 102.26 102.26
Crude Oil | Derivative Contracts - April through May (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   29
Weighted Average Price 68.28 68.28
Crude Oil | Offsetting Derivative Contracts - April through May (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   0
Weighted Average Price 0 0
Crude Oil | Derivative Contracts - April Through May | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   91
Weighted Average Price 67.63 67.63
Crude Oil | Offsetting Derivative Contracts - April Through May | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   2
Weighted Average Price 98.15 98.15
Crude Oil | Derivative Contracts - June (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   118
Weighted Average Price 67.77 67.77
Crude Oil | OffSetting Derivative Contracts - June (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   0
Weighted Average Price 0 0
Crude Oil | Derivative Contracts - June | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   2
Weighted Average Price 69.10 69.10
Crude Oil | OffSetting Derivative Contracts - June | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   2
Weighted Average Price 98.15 98.15
Crude Oil | Derivative Contracts - July through September (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   100
Weighted Average Price 70.15 70.15
Crude Oil | Offsetting Derivative Contracts - July through September (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   0
Weighted Average Price 0 0
Crude Oil | Derivative Contracts - October through December Year Two (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   69
Weighted Average Price 69.41 69.41
Crude Oil | Offsetting Derivative Contracts - October through December - Year Two (closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   0
Weighted Average Price 0 0
Crude Oil | Derivative Contracts - January through July (closed) | Roll Differential Swap    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   125
Weighted Average Price 0.15 0.15
Crude Oil | Derivative Contracts - August Through December | Roll Differential Swap    
Derivatives, Fair Value [Line Items]    
Volume (MBbld) | MBbls   125
Weighted Average Price 0.15 0.15
Natural Gas | Price Swaps    
Derivatives, Fair Value [Line Items]    
Cash paid for settlement of contracts | $ $ 735  
Natural Gas | Derivative Contracts - October through December (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price 3.05 3.05
Volume (MMBtud in thousands) | MMBTU   425
Natural Gas | Derivative Contracts - October through December | Price Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price 4.32 4.32
Volume (MMBtud in thousands) | MMBTU   300
Natural Gas | Derivative Contracts - January through July (closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price 3.57 3.57
Volume (MMBtud in thousands) | MMBTU   725
Natural Gas | Derivative Contracts - August through September | Price Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price 3.57 3.57
Volume (MMBtud in thousands) | MMBTU   725
Natural Gas | Derivative Contracts - January Through December Year One (Closed) | Price Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price 3.05 3.05
Volume (MMBtud in thousands) | MMBTU   425
Natural Gas | Derivative Contracts - January Through December Year One | Price Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price 3.36 3.36
Volume (MMBtud in thousands) | MMBTU   300
Natural Gas | Derivative Contracts - January Through December Year One | Basis Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price (0.01) (0.01)
Volume (MMBtud in thousands) | MMBTU   135
Natural Gas | Derivative Contracts - January through December Year Two | Price Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price 3.07 3.07
Volume (MMBtud in thousands) | MMBTU   725
Natural Gas | Derivative Contracts - January through December Year Two | Basis Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price 0.00 0.00
Volume (MMBtud in thousands) | MMBTU   10
Natural Gas | Derivative Contracts - January through December Year Three | Price Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price 3.07 3.07
Volume (MMBtud in thousands) | MMBTU   725
Natural Gas | Derivative Contracts - January through December Year Three | Basis Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price 0.00 0.00
Volume (MMBtud in thousands) | MMBTU   10
Natural Gas | Derivative Contracts - January through June (closed) | Basis Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price (0.01) (0.01)
Volume (MMBtud in thousands) | MMBTU   210
Natural Gas | Derivative Contracts - July through December | Basis Swaps    
Derivatives, Fair Value [Line Items]    
Weighted Average Price (0.01) (0.01)
Volume (MMBtud in thousands) | MMBTU   210