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Operations and Segmentation (Tables) | 9 Months Ended
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Sep. 30, 2021
Operations and Segmentation [Abstract] |
Freight Revenue By Commodity Group | The following table represents a disaggregation of our freight and other revenues:
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
Millions | 2021 | 2020 |  | 2021 | 2020
Bulk | $ | 1,687 | $ | 1,478 |  | $ | 4,847 | $ | 4,398
Industrial |  | 1,911 |  | 1,567 |  |  | 5,426 |  | 4,961
Premium |  | 1,568 |  | 1,551 |  |  | 4,674 |  | 4,089
Total freight revenues | $ | 5,166 | $ | 4,596 |  | $ | 14,947 | $ | 13,448
Other subsidiary revenues |  | 182 |  | 193 |  |  | 539 |  | 557
Accessorial revenues |  | 198 |  | 114 |  |  | 535 |  | 334
Other |  | 20 |  | 16 |  |  | 50 |  | 53
Total operating revenues | $ | 5,566 | $ | 4,919 |  | $ | 16,071 | $ | 14,392

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- References No definition available. + Details
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Namespace Prefix: | unp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition This element is used to capture the breakout of our one segment into our six commodity groups. + References No definition available. + Details
Name: | unp_ScheduleOfFreightRevenueTableTextBlock
Namespace Prefix: | unp_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration