XML 56 R42.htm IDEA: XBRL DOCUMENT v3.7.0.1
Acquisitions and Dispositions - Dispositions and Divestitures (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Sep. 30, 2017
Jun. 30, 2017
Jun. 30, 2016
Dispositions      
Proceeds from sales of assets   $ 389 $ 391
Disposed of by sale      
Dispositions      
Proceeds from sales of assets   389  
Held for sale | Depreciation and amortization      
Dispositions      
Recognized gains/(losses) related to sales of assets, net   35  
Held for sale | Other current assets      
Dispositions      
Assets classified as held for sale   $ 275  
Red River Pipeline      
Dispositions      
Interest percentage disposed of   40.00%  
Red River Pipeline Hewitt Segment      
Dispositions      
Interest percentage retained after disposal   60.00%  
Red River Pipeline from Ardmore to Longview      
Dispositions      
Interest percentage retained after disposal   100.00%  
Non-Core Pipeline Segment | Disposed of by sale | Depreciation and amortization      
Dispositions      
Recognized gains/(losses) related to sales of assets, net   $ 36  
Forecast | Non-Core Pipelines In The Rocky Mountains | Disposed of by sale      
Dispositions      
Proceeds from sales of assets $ 250