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Related Party Transactions (Tables)
 3 Months Ended
Mar. 31, 2018
Related Party Transaction [Line Items]  
Schedule of Related Party Transactions [Table Text Block]
The following table summarizes revenues earned by BNSF for services provided to related parties and expenditures to related parties (in millions):
 
 
Three Months Ended March 31,
 
 
2018
 
2017
Revenues
 
$
34

 
$
37

Expenditures
 
$
89

 
$
79