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Assets Held for Sale or Sold (Details)
$ in Millions
Nov. 03, 2015
USD ($)
Canadian Properties  
Long Lived Assets Held For Sale [LineItems]  
Net carrying value $ 129
Amount of PP&E in carrying value of assets 375
Asset retirement obligation of held for sale asset 235
Texas and Louisiana Assets  
Long Lived Assets Held For Sale [LineItems]  
Net carrying value 232
Amount of PP&E in carrying value of assets 358
Asset retirement obligation of held for sale asset $ 126