XML 24 R29.htm IDEA: XBRL DOCUMENT
v3.20.1

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

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

X
- 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