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Nature Of Operations (Tables) | 12 Months Ended
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Dec. 31, 2020
Nature Of Operations [Abstract] |
Freight Revenue By Commodity Group | Our operating revenues are primarily derived from contracts with customers for the transportation of freight from origin to destination. The following table represents a disaggregation of our freight and other revenues:
Millions | 2020 | 2019 | 2018
Bulk | $ | 5,960 | $ | 6,529 | $ | 7,069
Industrial |  | 6,622 |  | 7,472 |  | 7,689
Premium |  | 5,669 |  | 6,242 |  | 6,626
Total freight revenues | $ | 18,251 | $ | 20,243 | $ | 21,384
Other subsidiary revenues |  | 743 |  | 880 |  | 881
Accessorial revenues |  | 473 |  | 514 |  | 502
Other |  | 66 |  | 71 |  | 65
Total operating revenues | $ | 19,533 | $ | 21,708 | $ | 22,832

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