{"cik":100885,"taxonomy":"us-gaap","tag":"StockholdersEquityNoteStockSplitConversionRatio1","label":"Stockholders' Equity Note, Stock Split, Conversion Ratio","description":"Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.","entityName":"UNION PACIFIC CORP","units":{"pure":[{"start":"2014-05-26","end":"2014-05-27","val":2,"accn":"0001193125-14-280047","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-07-25"},{"start":"2014-05-26","end":"2014-05-27","val":2,"accn":"0001193125-14-380042","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-10-23"},{"start":"2014-05-26","end":"2014-05-27","val":2,"accn":"0001193125-15-037518","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-06","frame":"CY2014Q2I"},{"end":"2014-05-27","val":2,"accn":"0000100885-15-000090","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-04-23"},{"end":"2014-05-27","val":2,"accn":"0000100885-16-000260","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-05"},{"end":"2014-05-27","val":2,"accn":"0000100885-17-000056","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-03"}]}}