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Goodwill (Tables)
9 Months Ended
Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of goodwill by segment and changes during the period
Goodwill by segment and changes in goodwill are reflected in the following table (in millions):
 
Transportation
 
Facilities
 
Supply and Logistics
 
Total
Balance at December 31, 2018
$
1,040

 
$
978

 
$
503

 
$
2,521

Foreign currency translation adjustments
7

 
2

 
2

 
11

Balance at September 30, 2019
$
1,047

 
$
980

 
$
505

 
$
2,532