v3.7.0.1
Note 5- Acquired Intangibles and Goodwill (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Goodwill      
Acquired Intangibles, Net $ 947 $ 976  
Finite-Lived Intangible Assets, Accumulated Amortization 61 32  
Amortization of Intangible Assets 29 29  
Finite-Lived Intangible Assets, Amortization Expense, Next 12 Months 29    
Finite-Lived Intangible Assets, Amortization Expense, Year Two 29    
Finite-Lived Intangible Assets, Amortization Expense, Year Three 29    
Finite-Lived Intangible Assets, Amortization Expense, Year Four 29    
Finite-Lived Intangible Assets, Amortization Expense, Rolling Year Five 29    
Goodwill 117 130  
Goodwill, Other Increase (Decrease) 13    
Goodwill, Impairment Loss $ 0    
4610 Pipe Lines (No Natural Gas)      
Goodwill      
Goodwill, Impairment Loss   $ 0 $ 0