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Acquisitions, Dispositions and Impairments - Acquisitions (Details)
$ in Millions
1 Months Ended 6 Months Ended
Aug. 31, 2016
USD ($)
Jun. 30, 2016
USD ($)
item
Acquisitions    
Number of acquisitions completed | item   1
Cash consideration   $ 85
Integrated system of NGL assets | Subsequent Event    
Acquisitions    
Cash consideration $ 204  
Inventory and working capital included in the acquisition $ 51