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Goodwill (Tables)
 9 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of goodwill by segment and changes during the period
Goodwill by segment and changes in goodwill is reflected in the following table (in millions):
 
Transportation
 
Facilities
 
Supply and Logistics
 
Total
Balance at December 31, 2015
$
815

 
$
1,087

 
$
503

 
$
2,405

Foreign currency translation adjustments
12

 
5

 
2

 
19

Dispositions and reclassifications to assets held for sale
(15
)
 
(56
)
 
—

 
(71
)
Balance at September 30, 2016
$
812

 
$
1,036

 
$
505

 
$
2,353