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Other Income (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Other Income Details [Abstract] | |||||||||
| Rental income | $ 96us-gaap_RentalIncomeNonoperating | $ 106us-gaap_RentalIncomeNonoperating | [1] | $ 83us-gaap_RentalIncomeNonoperating | |||||
| Net gain on non-operating asset dispositions | 69unp_GainLossOnNonOperatingProperty | 32unp_GainLossOnNonOperatingProperty | 29unp_GainLossOnNonOperatingProperty | ||||||
| Interest Income | 4us-gaap_InvestmentIncomeInterest | 4us-gaap_InvestmentIncomeInterest | 3us-gaap_InvestmentIncomeInterest | ||||||
| Non-operating environmental costs and other | (18)unp_NonoperatingEnvironmentalCostsAndOther | [2] | (14)unp_NonoperatingEnvironmentalCostsAndOther | (7)unp_NonoperatingEnvironmentalCostsAndOther | |||||
| Total | 151us-gaap_OtherNonoperatingIncomeExpense | 128us-gaap_OtherNonoperatingIncomeExpense | 108us-gaap_OtherNonoperatingIncomeExpense | ||||||
| Land lease contract settlement | 17unp_LandLeaseContractSettlementRentalIncome | ||||||||
| Permanent easement sale | $ 14unp_PermanentEasementSale | ||||||||
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| X | ||||||||||
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- Definition
The gains (losses) resulting from the sale or disposal of nonoperating property No definition available.
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| X | ||||||||||
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- Definition
Rental income related to a land lease contract settlement No definition available.
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| X | ||||||||||
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- Definition
The net amount of other income and expense amounts, the components of which are not separately disclosed, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Major component is expenses associated with environmental cost on nonoperating property. No definition available.
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| X | ||||||||||
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- Definition
Other income related to a permanent easement sale No definition available.
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| X | ||||||||||
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- Definition
Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Income earned by providing the use of assets to an outside party in exchange for a payment or series of payments that is nonoperating in nature. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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