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Operations and Segmentation (Tables)
 3 Months Ended
Mar. 31, 2020
Operations and Segmentation [Abstract]  
Freight Revenue By Commodity Group The following table represents a disaggregation of our freight and other revenues:

Millions,

for the Three Months Ended March 31,

2020

2019

Bulk

$

1,534 

$

1,620 

Industrial

1,894 

1,839 

Premium

1,452 

1,551 

Total freight revenues

$

4,880 

$

5,010 

Other subsidiary revenues

214 

223 

Accessorial revenues

117 

133 

Other

18 

18 

Total operating revenues

$

5,229 

$

5,384