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Equity - Noncontrolling Interests Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Noncontrolling Interest [Line Items]      
Noncontrolling interests $ 37 $ 41  
Net income attributable to noncontrolling interests $ 0 $ 2 $ 3
Noncontrolling interest, chesapeake granite wash trust      
Noncontrolling Interest [Line Items]      
Common unit, outstanding (in units) 23,750,000    
Beneficial interest percent 51.00%