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v3.21.1

Operations and Segmentation (Tables) | 3 Months Ended
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Mar. 31, 2021
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, | 2021 | 2020
Bulk | $ | 1,512 | $ | 1,534
Industrial |  | 1,656 |  | 1,894
Premium |  | 1,481 |  | 1,452
Total freight revenues | $ | 4,649 | $ | 4,880
Other subsidiary revenues |  | 177 |  | 214
Accessorial revenues |  | 161 |  | 117
Other |  | 14 |  | 18
Total operating revenues | $ | 5,001 | $ | 5,229

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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_
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Balance Type: | na
Period Type: | duration