$UNP
UNION PACIFIC CORP Stock $unp

$unp Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-K Financial Statement

#000119312513045658 Filed on February 08, 2013

Income Statement

Concept	2012 Q4	2012 Q3	2012 Q2
Revenue	$5.250B	$5.343B	$5.221B
YoY Change	2.78%	4.74%	7.47%
Cost Of Revenue	$1.453B	$1.422B	$1.424B
YoY Change	0.69%	0.0%	0.28%
Gross Profit	$3.797B	$3.921B	$3.797B
YoY Change	3.6%	6.58%	10.44%
Gross Profit Margin	72.32%	73.39%	72.73%
Selling, General & Admin	$1.437B	$1.488B	$1.450B
YoY Change	-0.48%	0.13%	0.07%
% of Gross Profit	37.85%	37.95%	38.19%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$453.0M	$447.0M	$433.0M
YoY Change	9.69%	9.56%	7.98%
% of Gross Profit	11.93%	11.4%	11.4%
Operating Expenses	$2.072B	$2.135B	$3.497B
YoY Change	1.17%	-39.4%	0.89%
Operating Profit	$1.725B	$1.786B	$1.724B
YoY Change	6.68%	13.18%	23.85%
Interest Expense	-$127.0M	-$136.0M	$135.0M
YoY Change	-9.29%	-195.77%	-8.78%
% of Operating Profit	-7.36%	-7.61%	7.83%
Other Income/Expense, Net	$40.00M	$16.00M	$21.00M
YoY Change	53.85%	-5.88%	-19.23%
Pretax Income	$1.640B	$1.677B	$1.610B
YoY Change	7.19%	15.42%	26.77%
Income Tax	$604.0M	$635.0M	$608.0M
% Of Pretax Income	36.83%	37.87%	37.76%
Net Earnings	$1.036B	$1.042B	$1.002B
YoY Change	7.47%	15.27%	27.64%
Net Earnings / Revenue	19.73%	19.5%	19.19%
Basic Earnings Per Share	$2.21	$2.21	$2.11
Diluted Earnings Per Share	$2.19	$2.19	$2.10
COMMON SHARES
Basic Shares Outstanding			473.8M shares
Diluted Shares Outstanding			477.2M shares

Balance Sheet

Concept	2012 Q4	2012 Q3	2012 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.063B	$1.130B	$1.201B
YoY Change	-12.65%	-31.39%	13.84%
Cash & Equivalents	$1.063B	$1.130B	$1.201B
Short-Term Investments
Other Short-Term Assets	$297.0M	$553.0M	$288.0M
YoY Change	57.14%	139.39%	5.88%
Inventory	$660.0M	$680.0M	$646.0M
Prepaid Expenses
Receivables	$1.331B	$1.583B	$1.497B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$3.614B	$3.946B	$3.956B
YoY Change	-3.03%	-6.36%	6.95%
LONG-TERM ASSETS
Property, Plant & Equipment	$42.00B	$41.62B	$40.94B
YoY Change	5.17%	5.56%	5.21%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$1.259B	$1.235B	$1.211B
YoY Change	7.15%	5.47%	2.98%
Other Assets	$283.0M	$272.0M	$270.0M
YoY Change	8.85%	6.25%	9.76%
Total Long-Term Assets	$43.54B	$43.12B	$42.42B
YoY Change	5.25%	5.56%	5.18%
TOTAL ASSETS
Total Short-Term Assets	$3.614B	$3.946B	$3.956B
Total Long-Term Assets	$43.54B	$43.12B	$42.42B
Total Assets	$47.15B	$47.07B	$46.37B
YoY Change	4.56%	4.45%	5.33%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$825.0M	$886.0M	$955.0M
YoY Change	0.73%	11.73%	17.03%
Accrued Expenses	$761.0M	$720.0M	$793.0M
YoY Change	-5.93%	7.46%	13.77%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$196.0M	$713.0M	$780.0M
YoY Change	-6.22%	11.06%	335.75%
Total Short-Term Liabilities	$3.119B	$3.874B	$3.917B
YoY Change	-5.97%	4.03%	24.23%
LONG-TERM LIABILITIES
Long-Term Debt	$8.801B	$8.773B	$8.636B
YoY Change	1.2%	0.09%	-1.4%
Other Long-Term Liabilities	$2.248B	$2.016B	$2.088B
YoY Change	5.24%	17.07%	16.32%
Total Long-Term Liabilities	$2.248B	$10.79B	$2.088B
YoY Change	5.24%	526.54%	16.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.119B	$3.874B	$3.917B
Total Long-Term Liabilities	$2.248B	$10.79B	$2.088B
Total Liabilities	$27.28B	$27.52B	$27.29B
YoY Change	2.86%	3.85%	6.08%
SHAREHOLDERS EQUITY
Retained Earnings	$22.27B		$20.80B
YoY Change	14.16%		14.55%
Common Stock	$1.386B		$1.386B
YoY Change	0.0%		0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$6.707B		$6.117B
YoY Change	26.71%		35.36%
Treasury Stock Shares
Shareholders Equity	$19.88B	$19.55B	$19.09B
YoY Change
Total Liabilities & Shareholders Equity	$47.15B	$47.07B	$46.37B
YoY Change	4.56%	4.45%	5.33%

Cashflow Statement

Concept	2012 Q4	2012 Q3	2012 Q2
OPERATING ACTIVITIES
Net Income	$1.036B	$1.042B	$1.002B
YoY Change	7.47%	15.27%	27.64%
Depreciation, Depletion And Amortization	$453.0M	$447.0M	$433.0M
YoY Change	9.69%	9.56%	7.98%
Cash From Operating Activities	$1.795B	$1.590B	$1.372B
YoY Change	16.63%	-6.14%	1.93%
INVESTING ACTIVITIES
Capital Expenditures	-$919.0M	-$1.277B	-$1.012B
YoY Change	-4.07%	43.32%	30.75%
Acquisitions
YoY Change
Other Investing Activities	$152.0M	$293.0M	-$40.00M
YoY Change	90.0%	1731.25%	-161.54%
Cash From Investing Activities	-$767.0M	-$984.0M	-$1.052B
YoY Change	-12.64%	12.46%	48.38%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-1.095B	-677.0M	-114.0M
YoY Change	0.37%	198.24%	-86.27%
NET CHANGE
Cash From Operating Activities	1.795B	1.590B	1.372B
Cash From Investing Activities	-767.0M	-984.0M	-1.052B
Cash From Financing Activities	-1.095B	-677.0M	-114.0M
Net Change In Cash	-67.00M	-71.00M	206.0M
YoY Change	-84.42%	-111.99%	-206.74%
FREE CASH FLOW
Cash From Operating Activities	$1.795B	$1.590B	$1.372B
Capital Expenditures	-$919.0M	-$1.277B	-$1.012B
Free Cash Flow	$2.714B	$2.867B	$2.384B
YoY Change	8.69%	10.91%	12.45%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012	dei	Entity Central Index Key EntityCentralIndexKey	0000100885
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012Q4	us-gaap	Other Assets Current OtherAssetsCurrent	297000000	USD
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	189000000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	3614000000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	3727000000	USD
CY2011Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1175000000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	45096000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6161000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	5873000000	USD
CY2010	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4314000000	USD
CY2012	us-gaap	Fuel Costs FuelCosts	3608000000	USD
CY2011	us-gaap	Fuel Costs FuelCosts	3581000000	USD
CY2010	us-gaap	Fuel Costs FuelCosts	2486000000	USD
CY2010	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.31
CY2012	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	82000000	USD
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	489800000	shares
CY2012	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.49
CY2011	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.93
CY2011	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	199000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-20000000	USD
CY2012Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1259000000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	4113000000	USD
CY2011Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	4031000000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	22271000000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	19508000000	USD
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	6707000000	USD
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	800000000	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	554270763	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	479929530	shares
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2.50
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	19686000000	USD
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	469298732	shares
CY2012Q2	dei	Entity Public Float EntityPublicFloat	56210000000	USD
CY2011	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	18508000000	USD
CY2010	us-gaap	Cargo And Freight Revenue CargoAndFreightRevenue	16069000000	USD
CY2012	dei	Document Period End Date DocumentPeriodEndDate	2012-12-31
CY2012	dei	Entity Registrant Name EntityRegistrantName	UNION PACIFIC CORPORATION
CY2012	dei	Amendment Flag AmendmentFlag	false
CY2011	unp	Equipment And Other Rents EquipmentAndOtherRents	1167000000	USD
CY2012	dei	Document Type DocumentType	10-K
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	5264000000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	3292000000	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.33
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	6318000000	USD
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.58
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.72
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.53
CY2011	us-gaap	Revenues Revenues	19557000000	USD
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	498200000	shares
CY2011	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	1049000000	USD
CY2012	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4685000000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	112000000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2375000000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1972000000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1653000000	USD
CY2012	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	788000000	USD
CY2010	us-gaap	Interest Expense InterestExpense	602000000	USD
CY2012	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	1240000000	USD
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.27
CY2010	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	896000000	USD
CY2012	us-gaap	Revenues Revenues	20926000000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	5724000000	USD
CY2010	us-gaap	Revenues Revenues	16965000000	USD
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	476500000	shares
CY2011	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4681000000	USD
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	54000000	USD
CY2012	us-gaap	Interest Expense InterestExpense	535000000	USD
CY2011	us-gaap	Interest Expense InterestExpense	572000000	USD
CY2012	unp	Purchased Services And Material PurchasedServicesAndMaterial	2143000000	USD
CY2011	unp	Purchased Services And Material PurchasedServicesAndMaterial	2005000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	4433000000	USD
CY2012	us-gaap	Depreciation Depreciation	1760000000	USD
CY2011	us-gaap	Depreciation Depreciation	1617000000	USD
CY2010	us-gaap	Depreciation Depreciation	1487000000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	2780000000	USD
CY2010	unp	Equipment And Other Rents EquipmentAndOtherRents	1142000000	USD
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.78
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	473100000	shares
CY2011	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	782000000	USD
CY2010	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	719000000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	14181000000	USD
CY2011	us-gaap	Operating Expenses OperatingExpenses	13833000000	USD
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	485700000	shares
CY2010	us-gaap	Operating Expenses OperatingExpenses	11984000000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	6745000000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	4981000000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	108000000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	3943000000	USD
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	502900000	shares
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1217000000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1331000000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1401000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	263000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	306000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	41997000000	USD
CY2012Q4	us-gaap	Assets Assets	47153000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-320000000	USD
CY2011Q4	us-gaap	Assets Assets	45096000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-80000000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	196000000	USD
CY2011Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	209000000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	3119000000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	8801000000	USD
CY2011Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	8697000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	13108000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	12368000000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2248000000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2136000000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	27276000000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	26518000000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	1386000000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	1386000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	39934000000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	283000000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	260000000	USD
CY2012Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	2923000000	USD
CY2011Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	3108000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	57000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	12000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-132000000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	3317000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	7000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2700000000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2972000000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	3811000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	301000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	88000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	145000000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1063000000	USD
CY2010	unp	Purchased Services And Material PurchasedServicesAndMaterial	1836000000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	695000000	USD
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	554558034	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	469465273	shares
CY2011	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	108000000	USD
CY2012	unp	Payments To Acquire Property Plant And Equipment Pending Financing PaymentsToAcquirePropertyPlantAndEquipmentPendingFinancing	274000000	USD
CY2011	unp	Payments To Acquire Property Plant And Equipment Pending Financing PaymentsToAcquirePropertyPlantAndEquipmentPendingFinancing	85000000	USD
CY2012	unp	Proceeds From Sale Of Assets Financed ProceedsFromSaleOfAssetsFinanced	274000000	USD
CY2011	unp	Proceeds From Sale Of Assets Financed ProceedsFromSaleOfAssetsFinanced	85000000	USD
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-25000000	USD
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2.50
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	800000000	shares
CY2011	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	51000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	486000000	USD
CY2012	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	758000000	USD
CY2011	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	690000000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3176000000	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	80000000	USD
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	5293000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1186000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1054000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	19877000000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	18578000000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	47153000000	USD
CY2011Q4	us-gaap	Materials Supplies And Other MaterialsSuppliesAndOther	614000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	160000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	298000000	USD
CY2012	us-gaap	Payments Of Dividends PaymentsOfDividends	1146000000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3738000000	USD
CY2011	us-gaap	Payments Of Dividends PaymentsOfDividends	837000000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	108000000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1000000	USD
CY2011	unp	Deferred Income Taxes And Unrecognized Tax Benefits DeferredIncomeTaxesAndUnrecognizedTaxBenefits	986000000	USD
CY2011Q2	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	6000000	USD
CY2012	unp	Equipment And Other Rents EquipmentAndOtherRents	1197000000	USD
CY2012	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	108000000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	131000000	USD
CY2011	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	154000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	17763000000	USD
CY2010	unp	Payments To Acquire Property Plant And Equipment Pending Financing PaymentsToAcquirePropertyPlantAndEquipmentPendingFinancing	0	USD
CY2010	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	483000000	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2482000000	USD
CY2010	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	67000000	USD
CY2012Q4	us-gaap	Materials Supplies And Other MaterialsSuppliesAndOther	660000000	USD
CY2010	unp	Proceeds From Sale Of Assets Financed ProceedsFromSaleOfAssetsFinanced	0	USD
CY2010	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	73000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	894000000	USD
CY2010	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	1412000000	USD
CY2010	us-gaap	Payments Of Dividends PaymentsOfDividends	602000000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	86000000	USD
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.31
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.93
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	2.49
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	16801000000	USD
CY2010	us-gaap	Dividends Cash DividendsCash	653000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2623000000	USD
CY2012	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	136000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	4105000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3633000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3119000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2488000000	USD
CY2012	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	1474000000	USD
CY2011	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	1418000000	USD
CY2010	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	1249000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2682000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2381000000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-154000000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-764000000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1850000000	USD
CY2012	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	290000000	USD
CY2010	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2011	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	147000000	USD
CY2010	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	125000000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-1552000000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-625000000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-936000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-70000000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	217000000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	518000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-185000000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	395000000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	243000000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1086000000	USD
CY2012	us-gaap	Payments Of Debt Restructuring Costs PaymentsOfDebtRestructuringCosts	0	USD
CY2011	us-gaap	Payments Of Debt Restructuring Costs PaymentsOfDebtRestructuringCosts	272000000	USD
CY2010	us-gaap	Payments Of Debt Restructuring Costs PaymentsOfDebtRestructuringCosts	98000000	USD
CY2011	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-178000000	USD
CY2010	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	17000000	USD
CY2012	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	46000000	USD
CY2011	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	80000000	USD
CY2010	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	59000000	USD
CY2012Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	318000000	USD
CY2011Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	284000000	USD
CY2010Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	183000000	USD
CY2010	unp	Deferred Income Taxes And Unrecognized Tax Benefits DeferredIncomeTaxesAndUnrecognizedTaxBenefits	672000000	USD
CY2012	unp	Deferred Income Taxes And Unrecognized Tax Benefits DeferredIncomeTaxesAndUnrecognizedTaxBenefits	887000000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	561000000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	572000000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	614000000	USD
CY2011	us-gaap	Dividends Cash DividendsCash	938000000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	18578000000	USD
CY2012	us-gaap	Dividends Cash DividendsCash	1180000000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	19877000000	USD
CY2010	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1249000000	USD
CY2011	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1418000000	USD
CY2012	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1474000000	USD
CY2010	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	164000000	USD
CY2011	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	199000000	USD
CY2012	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	142000000	USD
CY2012	us-gaap	Nature Of Operations NatureOfOperations	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;margin-left:0px;">For purposes of this report, unless the context otherwise requires, all references herein to the “Corporation”, “UPC”, “we”, “us”, and “our” mean Union Pacific Corporation and its subsidiaries, including Union Pacific Railroad Company, which will be separately referred to herein as “UPRR” or the “Railroad”. </font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;font-weight:bold;margin-left:0px;">1. Nature of Operations</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;font-weight:bold;margin-left:0px;">Operations and Segmentation</font><font style="font-family:Arial;font-size:10pt;font-weight:bold;"> </font><font style="font-family:Arial;font-size:10pt;">– We are a Class I railroad </font><font style="font-family:Arial;font-size:10pt;">operating</font><font style="font-family:Arial;font-size:10pt;"> in the </font><font style="font-family:Arial;font-size:10pt;">U.S</font><font style="font-family:Arial;font-size:10pt;">. </font><font style="font-family:Arial;font-size:10pt;">Our network includes</font><font style="font-family:Arial;font-size:10pt;"> </font><font style="font-family:Arial;font-size:10pt;">31,</font><font style="font-family:Arial;font-size:10pt;">8</font><font style="font-family:Arial;font-size:10pt;">6</font><font style="font-family:Arial;font-size:10pt;">8</font><font style="font-family:Arial;font-size:10pt;"> </font><font style="font-family:Arial;font-size:10pt;">route miles, linking Pacific Coast and Gulf Coast ports with the Midwest and eastern </font><font style="font-family:Arial;font-size:10pt;">U.S.</font><font style="font-family:Arial;font-size:10pt;"> gateways and providing several corridors to key Mexican gateways. </font><font style="font-family:Arial;font-size:10pt;">We own 26,020</font><font style="font-family:Arial;font-size:10pt;"> miles an</font><font style="font-family:Arial;font-size:10pt;">d</font><font style="font-family:Arial;font-size:10pt;"> operate on the remainder pursuant to trackage rights or leases. </font><font style="font-family:Arial;font-size:10pt;">We serve the western two-thirds of the country and maintain coordinated schedules with other rail carriers for the handling of freight to and from the Atlantic Coast, the Pacific Coast, the Southeast, the Southwest, Canada, and Mexico. Export and import traffic is moved through Gulf Coast and Pacific Coast ports and across the Mexican and Canadian borders.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;margin-left:0px;">The Railroad, along with its subsidiaries and rail affiliates, is our one reportable opera</font><font style="font-family:Arial;font-size:10pt;">ting segment. Although </font><font style="font-family:Arial;font-size:10pt;">we provide and review revenue </font><font style="font-family:Arial;font-size:10pt;">by commodity group, we analyze the net financial results of the Railroad as one segment due to the integrated nature of our rail network. </font><font style="font-family:Arial;font-size:10pt;">The following table provides </font><font style="font-family:Arial;font-size:10pt;">freight </font><font style="font-family:Arial;font-size:10pt;">revenue by commodity group:</font></p><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 16px"><td style="width: 385px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:385px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: left;"> Millions</font></td><td style="width: 19px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-STYLE: italic;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">2012</font></td><td style="width: 19px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">2011</font></td><td style="width: 19px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; border-top-style:solid;border-top-width:2px;border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-STYLE: italic;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">2010</font></td></tr><tr style="height: 16px"><td style="width: 385px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D9D9D9;border-color:#000000;min-width:385px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> Agricultural </font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,280</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,324</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,018</font></td></tr><tr style="height: 16px"><td style="width: 385px; text-align:left;border-color:#000000;min-width:385px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> Automotive </font></td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 1,807</font></td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 1,510</font></td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 1,271</font></td></tr><tr style="height: 16px"><td style="width: 385px; text-align:left;background-color:#D9D9D9;border-color:#000000;min-width:385px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> Chemicals </font></td><td style="width: 19px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,238</font></td><td style="width: 19px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 2,815</font></td><td style="width: 19px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 2,425</font></td></tr><tr style="height: 16px"><td style="width: 385px; text-align:left;border-color:#000000;min-width:385px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> Coal</font></td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,912</font></td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 4,084</font></td><td style="width: 19px; text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,489</font></td></tr><tr style="height: 16px"><td style="width: 385px; text-align:left;background-color:#D9D9D9;border-color:#000000;min-width:385px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> Industrial Products </font></td><td style="width: 19px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,494</font></td><td style="width: 19px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,166</font></td><td style="width: 19px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 2,639</font></td></tr><tr style="height: 16px"><td style="width: 385px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:385px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> Intermodal </font></td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,955</font></td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,609</font></td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,227</font></td></tr><tr style="height: 16px"><td style="width: 385px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D9D9D9;border-color:#000000;min-width:385px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> Total freight revenues </font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 19,686</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 18,508</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 16,069</font></td></tr><tr style="height: 16px"><td style="width: 385px; border-bottom-style:solid;border-bottom-width:1px;text-align:left;border-color:#000000;min-width:385px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> Other revenues </font></td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 1,240</font></td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 1,049</font></td><td style="width: 19px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 896</font></td></tr><tr style="height: 24px"><td style="width: 385px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:left;background-color:#D9D9D9;border-color:#000000;min-width:385px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> Total operating revenues </font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 20,926</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 19,557</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:19px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D9D9D9;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 16,965</font></td></tr></table></div><p style='margin-top: 0pt; margin-bottom: 0pt;'></p><p style='margin-top:12pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;margin-left:0px;">Although our revenues are principally derived from customers domiciled in the </font><font style="font-family:Arial;font-size:10pt;">U.S</font><font style="font-family:Arial;font-size:10pt;">.</font><font style="font-family:Arial;font-size:10pt;">, the ultimate points of origination or destination for some products transported </font><font style="font-family:Arial;font-size:10pt;">by us </font><font style="font-family:Arial;font-size:10pt;">are outside the </font><font style="font-family:Arial;font-size:10pt;">U.S</font><font style="font-family:Arial;font-size:10pt;">.</font><font style="font-family:Arial;font-size:10pt;"> Each of our commodity groups includes revenue from shipments to and from Mexico. Included in the above table are revenues from our Mexico business which amounted to $1.9 billion in 2012, $1.8 billion in 2011, and $1.6 billion in 2010.</font></p><p style='margin-top:0pt; margin-bottom:0pt'> </p><p style='margin-top:5pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;font-weight:bold;margin-left:0px;">Basis of Presentation</font><font style="font-family:Arial;font-size:10pt;"> – </font><font style="font-family:Arial;font-size:10pt;">The C</font><font style="font-family:Arial;font-size:10pt;">onsolidated </font><font style="font-family:Arial;font-size:10pt;">F</font><font style="font-family:Arial;font-size:10pt;">inancial </font><font style="font-family:Arial;font-size:10pt;">S</font><font style="font-family:Arial;font-size:10pt;">tatements are presented in accordance with accounting principles generally accepted in</font><font style="font-family:Arial;font-size:10pt;"> the </font><font style="font-family:Arial;font-size:10pt;">U.S</font><font style="font-family:Arial;font-size:10pt;">.</font><font style="font-family:Arial;font-size:10pt;"> (</font><font style="font-family:Arial;font-size:10pt;">GAAP) as codified in the Financial Accounting Standards Board (FASB) Accounting Standards Codification</font><font style="font-family:Arial;font-size:10pt;"> (ASC)</font><font style="font-family:Arial;font-size:10pt;">.</font><font style="font-family:Arial;font-size:10pt;"> </font></p>
CY2012	unp	Mexico Cargo And Freight Revenue MexicoCargoAndFreightRevenue	1900000000	USD
CY2011	unp	Mexico Cargo And Freight Revenue MexicoCargoAndFreightRevenue	1800000000	USD
CY2010	unp	Mexico Cargo And Freight Revenue MexicoCargoAndFreightRevenue	1600000000	USD
CY2012	us-gaap	Use Of Estimates UseOfEstimates	<p style='margin-top:0pt; margin-bottom:0pt'><font style="font-family:Arial;font-size:10pt;font-weight:bold;margin-left:0px;">Use of Estimates – </font><font style="font-family:Arial;font-size:10pt;">Our Consolidated Financial Statements include estimates and assumptions regarding certain assets, liabilities, revenue, and expenses and the disclosure of certain contingent assets and liabilities. Actual future results may differ from such estimates.</font></p>
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	83000000	USD
CY2010	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	17000000	USD
CY2010	us-gaap	Restricted Stock Expense RestrictedStockExpense	57000000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	100000000	USD
CY2011	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	18000000	USD
CY2011	us-gaap	Restricted Stock Expense RestrictedStockExpense	64000000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	82000000	USD
CY2012	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	18000000	USD
CY2012	us-gaap	Restricted Stock Expense RestrictedStockExpense	75000000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	93000000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	74000000	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	51000000	USD
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	32168520	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	32374343	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	32904291	shares
CY2011Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	62000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	1649000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	1860000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-1815000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-1587000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	45000000	USD
CY2012	unp	Weighted Average Maturity Of Pension Plan Debt Portfolio WeightedAverageMaturityOfPensionPlanDebtPortfolio	P12Y
CY2012Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.00
CY2011Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.00
CY2012	us-gaap	Defined Benefit Plan Narrative Description Of Basis Used To Determine Overall Expected Long Term Rate Of Return On Assets Assumption DefinedBenefitPlanNarrativeDescriptionOfBasisUsedToDetermineOverallExpectedLongTermRateOfReturnOnAssetsAssumption	The investment strategy for pension plan assets is to maintain a broadly diversified portfolio designed to achieve our target average long-term rate of return of 7.5%.
CY2012	us-gaap	Defined Benefit Plan Prohibited Investments DefinedBenefitPlanProhibitedInvestments	The investment of pension plan assets in securities issued by Union Pacific is specifically prohibited by the plan for both the equity and debt portfolios, other than through index fund holdings.
CY2012	us-gaap	Description Of Defined Contribution Pension And Other Postretirement Plans DescriptionOfDefinedContributionPensionAndOtherPostretirementPlans	We provide a defined contribution plan (401(k)/thrift plan) to eligible non-union employees for whom we make matching contributions. We match 50 cents for each dollar contributed by employees up to the first six percent of compensation contributed.
CY2012	unp	Railroad Retirement System Description RailroadRetirementSystemDescription	All Railroad employees are covered by the Railroad Retirement System (the System).
CY2012	us-gaap	Multiemployer Plans Plan Benefits Description MultiemployerPlansPlanBenefitsDescription	Under collective bargaining agreements, we participate in multi-employer benefit plans that provide certain postretirement health care and life insurance benefits for eligible union employees.
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	15000000	USD
CY2012	unp	Railroad Retirement System Contributions RailroadRetirementSystemContributions	644000000	USD
CY2012	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	62000000	USD
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	14000000	USD
CY2011	unp	Railroad Retirement System Contributions RailroadRetirementSystemContributions	600000000	USD
CY2011	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	66000000	USD
CY2010	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	60000000	USD
CY2010	unp	Railroad Retirement System Contributions RailroadRetirementSystemContributions	566000000	USD
CY2010	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	13000000	USD
CY2012	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	83000000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	3000000	USD
CY2012	unp	Nonoperating Environmental Costs And Other NonoperatingEnvironmentalCostsAndOther	1000000	USD
CY2011	unp	Nonoperating Environmental Costs And Other NonoperatingEnvironmentalCostsAndOther	9000000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	3000000	USD
CY2011	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	80000000	USD
CY2010	unp	Nonoperating Environmental Costs And Other NonoperatingEnvironmentalCostsAndOther	38000000	USD
CY2010	us-gaap	Investment Income Interest InvestmentIncomeInterest	4000000	USD
CY2010	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	84000000	USD
CY2012	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-6000000	USD
CY2011	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-5000000	USD
CY2010	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-21000000	USD
CY2012	unp	Gain Loss On Non Operating Property GainLossOnNonOperatingProperty	29000000	USD
CY2011	unp	Gain Loss On Non Operating Property GainLossOnNonOperatingProperty	43000000	USD
CY2010	unp	Gain Loss On Non Operating Property GainLossOnNonOperatingProperty	25000000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1335000000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	153000000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1488000000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	760000000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	120000000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	880000000	USD
CY2012	unp	Unrecognized Federal Tax Benefits Expense Benefit UnrecognizedFederalTaxBenefitsExpenseBenefit	5000000	USD
CY2012	unp	Unrecognized State And Local Tax Benefits Expense Benefit UnrecognizedStateAndLocalTaxBenefitsExpenseBenefit	2000000	USD
CY2012	unp	Unrecognized Tax Benefits Expense Benefit UnrecognizedTaxBenefitsExpenseBenefit	7000000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	862000000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	986000000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	124000000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	894000000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	964000000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	70000000	USD
CY2011	unp	Unrecognized Federal Tax Benefits Expense Benefit UnrecognizedFederalTaxBenefitsExpenseBenefit	11000000	USD
CY2011	unp	Unrecognized State And Local Tax Benefits Expense Benefit UnrecognizedStateAndLocalTaxBenefitsExpenseBenefit	11000000	USD
CY2011	unp	Unrecognized Tax Benefits Expense Benefit UnrecognizedTaxBenefitsExpenseBenefit	22000000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	862000000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	981000000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	119000000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	550000000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	647000000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	97000000	USD
CY2010	unp	Unrecognized Federal Tax Benefits Expense Benefit UnrecognizedFederalTaxBenefitsExpenseBenefit	26000000	USD
CY2010	unp	Unrecognized State And Local Tax Benefits Expense Benefit UnrecognizedStateAndLocalTaxBenefitsExpenseBenefit	-1000000	USD
CY2010	unp	Unrecognized Tax Benefits Expense Benefit UnrecognizedTaxBenefitsExpenseBenefit	25000000	USD
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.031
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.001
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.376
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2011	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.031
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.004
CY2011	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.375
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2010	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.031
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.002
CY2010	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.373
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.001
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.005
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.005
CY2011	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.005
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.007
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	0.003
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1255000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1457000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	238000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	200000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	198000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	237000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	231000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	197000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	259000000	USD
CY2012Q4	unp	Deferred Tax Assets Tax Deferred Expense Reserves Accruals Debt Leases DeferredTaxAssetsTaxDeferredExpenseReservesAccrualsDebtLeases	185000000	USD
CY2011Q4	unp	Deferred Tax Assets Tax Deferred Expense Reserves Accruals Debt Leases DeferredTaxAssetsTaxDeferredExpenseReservesAccrualsDebtLeases	365000000	USD
CY2011Q4	unp	Deferred Tax Assets Tax Deferred Expense Compensation Benefits Pensions Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationBenefitsPensionsPostretirementBenefits	342000000	USD
CY2012Q4	unp	Deferred Tax Assets Tax Deferred Expense Compensation Benefits Pensions Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationBenefitsPensionsPostretirementBenefits	365000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	69000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	63000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	13863000000	USD
CY2012Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	14100000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	13312000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	207000000	USD
CY2011Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	13519000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	12845000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	12062000000	USD
CY2012	us-gaap	Valuation Allowance Methodologies And Assumptions ValuationAllowanceMethodologiesAndAssumptions	Tax benefits are recognized only for tax positions that are more likely than not to be sustained upon examination by tax authorities. The amount recognized is measured as the largest amount of benefit that is greater than 50 percent likely to be realized upon settlement. Unrecognized tax benefits are tax benefits claimed in our tax returns that do not meet these recognition and measurement standards.
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	107000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	29000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	19000000	USD
CY2012	unp	Increases Decreases For Interest And Penalties IncreasesDecreasesForInterestAndPenalties	-4000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	115000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	86000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	9000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	81000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	30000000	USD
CY2011	unp	Increases Decreases For Interest And Penalties IncreasesDecreasesForInterestAndPenalties	-9000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3000000	USD
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	61000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	38000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	11000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	22000000	USD
CY2010	unp	Increases Decreases For Interest And Penalties IncreasesDecreasesForInterestAndPenalties	5000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3000000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2011	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	27000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	4000000	USD
CY2010	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Stock Options WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfStockOptions	3300000	shares
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2012Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	6000000	USD
CY2011Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	10000000	USD
CY2011	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	10000000	USD
CY2010	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	6000000	USD
CY2011Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	14000000	USD
CY2012	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	-4000000	USD
CY2012Q4	us-gaap	Income Tax Examination Liability Refund Adjustment From Settlement With Taxing Authority IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority	8000000	USD
CY2012Q4	unp	Current Asset For Unrecognized Tax Benefits CurrentAssetForUnrecognizedTaxBenefits	13000000	USD
CY2012	us-gaap	Income Tax Examination Description IncomeTaxExaminationDescription	Internal Revenue Service (IRS) examinations have been completed and settled for all years prior to 2005, although some interest calculations remain open for years prior to 2005. The IRS has completed its examinations and issued notices of deficiency for tax years 2005 through 2008. We disagree with many of their proposed adjustments, and we are at IRS Appeals for these years. Additionally, several state tax authorities are examining our state income tax returns for years 2003 through 2010.
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	41000000	USD
CY2012Q4	unp	Unrecognized Tax Benefits Not Impacting Effective Tax Rate UnrecognizedTaxBenefitsNotImpactingEffectiveTaxRate	-74000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	80000000	USD
CY2011Q4	unp	Unrecognized Tax Benefits Not Impacting Effective Tax Rate UnrecognizedTaxBenefitsNotImpactingEffectiveTaxRate	-27000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	90000000	USD
CY2010Q4	unp	Unrecognized Tax Benefits Not Impacting Effective Tax Rate UnrecognizedTaxBenefitsNotImpactingEffectiveTaxRate	4000000	USD
CY2012	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Stock Options WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfStockOptions	1800000	shares
CY2012	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Retention Shares And Units WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfRetentionSharesAndUnits	1600000	shares
CY2011	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Retention Shares And Units WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfRetentionSharesAndUnits	1500000	shares
CY2011	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Stock Options WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfStockOptions	2600000	shares
CY2010	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Retention Shares And Units WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfRetentionSharesAndUnits	1400000	shares
CY2012Q4	unp	Value Outstanding Undivided Interest Held By Investors Under Receivables Securitization Facility ValueOutstandingUndividedInterestHeldByInvestorsUnderReceivablesSecuritizationFacility	100000000	USD
CY2011Q4	unp	Total Transfer Capacity Undivided Interests To Investors Under Receivables Securitization Facility TotalTransferCapacityUndividedInterestsToInvestorsUnderReceivablesSecuritizationFacility	600000000	USD
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	500000	shares
CY2011	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	600000	shares
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	300000	shares
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1149000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-36000000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-1000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1004000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-48000000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-2000000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	4000000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	9000000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Noncurrent AllowanceForDoubtfulAccountsReceivableNoncurrent	41000000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Noncurrent AllowanceForDoubtfulAccountsReceivableNoncurrent	33000000	USD
CY2012Q4	unp	Total Transfer Capacity Undivided Interests To Investors Under Receivables Securitization Facility TotalTransferCapacityUndividedInterestsToInvestorsUnderReceivablesSecuritizationFacility	600000000	USD
CY2011Q4	unp	Value Outstanding Undivided Interest Held By Investors Under Receivables Securitization Facility ValueOutstandingUndividedInterestHeldByInvestorsUnderReceivablesSecuritizationFacility	100000000	USD
CY2011Q4	unp	Value Of Interest Retained ValueOfInterestRetained	1100000000	USD
CY2011Q4	unp	Accounts Receivable Supporting Undivided Investor Held Interest AccountsReceivableSupportingUndividedInvestorHeldInterest	1100000000	USD
CY2012Q4	unp	Value Of Interest Retained ValueOfInterestRetained	1100000000	USD
CY2012Q4	unp	Accounts Receivable Supporting Undivided Investor Held Interest AccountsReceivableSupportingUndividedInvestorHeldInterest	1100000000	USD
CY2012	unp	Receivables Collected ReceivablesCollected	20100000000	USD
CY2012	unp	Receivables Securitization Facility Interest Expense Cost ReceivablesSecuritizationFacilityInterestExpenseCost	3000000	USD
CY2011	unp	Receivables Collected ReceivablesCollected	18800000000	USD
CY2011	unp	Receivables Securitization Facility Interest Expense Cost ReceivablesSecuritizationFacilityInterestExpenseCost	4000000	USD
CY2013Q1	unp	Value Outstanding Undivided Interest Held By Investors Under Receivables Securitization Facility ValueOutstandingUndividedInterestHeldByInvestorsUnderReceivablesSecuritizationFacility	400000000	USD
CY2010	unp	Receivables Securitization Facility Interest Expense Cost ReceivablesSecuritizationFacilityInterestExpenseCost	6000000	USD
CY2013Q1	unp	Value Of Subsequent Additional Undivided Interest Transferred To Investors Under Receivables Securitization Facility ValueOfSubsequentAdditionalUndividedInterestTransferredToInvestorsUnderReceivablesSecuritizationFacility	300000000	USD
CY2012	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	2100000000	USD
CY2011	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	2200000000	USD
CY2010	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	2000000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	57279000000	USD
CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	15282000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	54444000000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	14510000000	USD
CY2012	us-gaap	Property Plant And Equipment Additional Disclosures PropertyPlantAndEquipmentAdditionalDisclosures	We currently have more than 60 depreciable asset classes, and we may increase or decrease the number of asset classes due to changes in technology, asset strategies, or other factors.
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	825000000	USD
CY2012Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	376000000	USD
CY2012Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	368000000	USD
CY2012Q4	unp	Accrued Casualty Costs AccruedCasualtyCosts	213000000	USD
CY2012Q4	unp	Equipment Rents Payable EquipmentRentsPayable	95000000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	556000000	USD
CY2011Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	624000000	USD
CY2011Q4	unp	Equipment Rents Payable EquipmentRentsPayable	90000000	USD
CY2011Q4	unp	Accrued Casualty Costs AccruedCasualtyCosts	249000000	USD
CY2011Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	482000000	USD
CY2011Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	363000000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	819000000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	172000000	USD
CY2011Q4	us-gaap	Interest Payable Current InterestPayableCurrent	197000000	USD
CY2012	us-gaap	Gain Loss On Components Excluded From Assessment Of Interest Rate Fair Value Hedge Effectiveness GainLossOnComponentsExcludedFromAssessmentOfInterestRateFairValueHedgeEffectiveness	0	USD
CY2012	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	0	USD
CY2011	us-gaap	Gain Loss On Components Excluded From Assessment Of Interest Rate Fair Value Hedge Effectiveness GainLossOnComponentsExcludedFromAssessmentOfInterestRateFairValueHedgeEffectiveness	0	USD
CY2011	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	0	USD
CY2010	us-gaap	Gain Loss On Components Excluded From Assessment Of Interest Rate Fair Value Hedge Effectiveness GainLossOnComponentsExcludedFromAssessmentOfInterestRateFairValueHedgeEffectiveness	2000000	USD
CY2010	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	2000000	USD
CY2011Q4	us-gaap	Interest Rate Fair Value Hedge Derivative At Fair Value Net InterestRateFairValueHedgeDerivativeAtFairValueNet	0	USD
CY2012	us-gaap	Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income Loss UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss	1000000	USD
CY2011	us-gaap	Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income Loss UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss	2000000	USD
CY2012Q4	us-gaap	Interest Rate Cash Flow Hedge Derivative At Fair Value Net InterestRateCashFlowHedgeDerivativeAtFairValueNet	0	USD
CY2011Q4	us-gaap	Interest Rate Cash Flow Hedge Derivative At Fair Value Net InterestRateCashFlowHedgeDerivativeAtFairValueNet	0	USD
CY2012Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	11100000000	USD
CY2012Q4	unp	Fair Value Of Total Debt In Excess Of Carrying Value FairValueOfTotalDebtInExcessOfCarryingValue	2100000000	USD
CY2011Q4	unp	Fair Value Of Total Debt In Excess Of Carrying Value FairValueOfTotalDebtInExcessOfCarryingValue	1600000000	USD
CY2011Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	10500000000	USD
CY2012Q4	unp	Fixed Rate Debt Securities Containing Call Provisions FixedRateDebtSecuritiesContainingCallProvisions	203000000	USD
CY2011Q4	unp	Fixed Rate Debt Securities Containing Call Provisions FixedRateDebtSecuritiesContainingCallProvisions	303000000	USD
CY2012Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	0	USD
CY2011Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	0	USD
CY2012Q4	us-gaap	Interest Rate Fair Value Hedge Derivative At Fair Value Net InterestRateFairValueHedgeDerivativeAtFairValueNet	0	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	8997000000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	8906000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	296000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	698000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	442000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	584000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	753000000	USD
CY2012Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	6224000000	USD
CY2012	us-gaap	Line Of Credit Facility Covenant Compliance LineOfCreditFacilityCovenantCompliance	At December 31, 2012, and December 31, 2011 (and at all times during the year), we were in compliance with this covenant.
CY2012Q2	us-gaap	Debt Instrument Description Of Variable Rate Basis DebtInstrumentDescriptionOfVariableRateBasis	The loan has a floating rate based on London Interbank Offered Rates, plus a spread, and is prepayable in whole or in part without a premium prior to maturity.
CY2012Q2	us-gaap	Debt Instrument Maturity Date Description DebtInstrumentMaturityDateDescription	4-year-term loan
CY2011Q2	us-gaap	Debt Conversion Original Debt Amount1 DebtConversionOriginalDebtAmount1	-857000000	USD
CY2011Q2	us-gaap	Debt Conversion Converted Instrument Issuance Date Day Month And Year DebtConversionConvertedInstrumentIssuanceDateDayMonthAndYear	2011-06-23
CY2011Q2	us-gaap	Debt Conversion Converted Instrument Rate DebtConversionConvertedInstrumentRate	0.04163
CY2011Q2	us-gaap	Debt Conversion Converted Instrument Expiration Or Due Date Day Month And Year DebtConversionConvertedInstrumentExpirationOrDueDateDayMonthAndYear	2022-07-15
CY2011Q2	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	267000000	USD
CY2011Q2	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	750000000	USD
CY2011Q2	unp	Accrued Interest Debt Exchange Existing Notes AccruedInterestDebtExchangeExistingNotes	17000000	USD
CY1997Q1	unp	Value Of Assets That Secured Mortgage Bonds ValueOfAssetsThatSecuredMortgageBonds	6000000000	USD
CY2012Q4	unp	Carrying Value Of Equipment Serving As Collateral For Capital Leases And Other Types Of Equipment Obligations CarryingValueOfEquipmentServingAsCollateralForCapitalLeasesAndOtherTypesOfEquipmentObligations	2900000000	USD
CY2011Q4	unp	Carrying Value Of Equipment Serving As Collateral For Capital Leases And Other Types Of Equipment Obligations CarryingValueOfEquipmentServingAsCollateralForCapitalLeasesAndOtherTypesOfEquipmentObligations	2900000000	USD
CY2012Q4	unp	Allowable Debt Per Debt To Net Worth Coverage Ratio As Defined Facility AllowableDebtPerDebtToNetWorthCoverageRatioAsDefinedFacility	39800000000	USD
CY2012Q4	unp	Outstanding Debt As Defined By Facility OutstandingDebtAsDefinedByFacility	9600000000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	0	USD
CY2012Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1800000000	USD
CY2012Q4	us-gaap	Commercial Paper CommercialPaper	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	50000000	USD
CY2012	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	50000000	USD
CY2011Q4	unp	Secured Debt Under Receivables Securitization Facility SecuredDebtUnderReceivablesSecuritizationFacility	100000000	USD
CY2012Q4	unp	Secured Debt Under Receivables Securitization Facility SecuredDebtUnderReceivablesSecuritizationFacility	100000000	USD
CY2012Q4	us-gaap	Retained Earnings Unappropriated RetainedEarningsUnappropriated	15100000000	USD
CY2011Q4	us-gaap	Retained Earnings Unappropriated RetainedEarningsUnappropriated	13800000000	USD
CY2012Q4	unp	Debt Reclassified As Long Term DebtReclassifiedAsLongTerm	100000000	USD
CY2011Q4	unp	Debt Reclassified As Long Term DebtReclassifiedAsLongTerm	100000000	USD
CY2012Q4	unp	Board Of Directors Remaining Debt Issuance BoardOfDirectorsRemainingDebtIssuance	1400000000	USD
CY2012Q2	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	100000000	USD
CY2012Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2000000	USD
CY2012Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	286000000	USD
CY2012Q4	unp	Early Buy Out Locomotives EarlyBuyOutLocomotives	343
CY2012	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2015-05-25
CY2012Q4	unp	Future Minimum Lease Payments Vies FutureMinimumLeasePaymentsVies	3600000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	282000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	265000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	253000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	232000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	243000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	1166000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	2441000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	593000000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	1848000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	525000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	466000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	410000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	375000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	339000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	2126000000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	4241000000	USD
CY2012Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	2467000000	USD
CY2011Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	2458000000	USD
CY2012Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	966000000	USD
CY2011Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	915000000	USD
CY2012	unp	Rent Expense For Operating Leases RentExpenseForOperatingLeases	631000000	USD
CY2011	unp	Rent Expense For Operating Leases RentExpenseForOperatingLeases	637000000	USD
CY2010	unp	Rent Expense For Operating Leases RentExpenseForOperatingLeases	624000000	USD
CY2012Q4	unp	Capital Leases Future Minimum Payments Due Locomotives CapitalLeasesFutureMinimumPaymentsDueLocomotives	0.94
CY2012	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	115.01
CY2011	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	95.94
CY2012Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	15035949	shares
CY2012Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	110.64
CY2012Q2	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	110.02
CY2012Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	122.13
CY2012Q4	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	121.81
CY2011Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	94.10
CY2011Q2	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	100.75
CY2011Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	91.45
CY2011Q4	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	98.16
CY2012	unp	Stock Repurchased Since Inception Value StockRepurchasedSinceInceptionValue	7100000000	USD
CY2011Q2	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	40000000	shares
CY2012	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	12820459	shares
CY2012Q1	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	3917369	shares
CY2011Q1	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	2636178	shares
CY2012Q2	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	3770528	shares
CY2012Q3	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	3098812	shares
CY2012Q4	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	2033750	shares
CY2011Q2	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	3576399	shares
CY2011Q3	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	4681535	shares
CY2011Q4	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	3885658	shares
CY2011	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	14779770	shares
CY2011Q4	us-gaap	Revenues Revenues	5108000000	USD
CY2011Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	1617000000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	964000000	USD
CY2011Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.01
CY2012Q1	us-gaap	Revenues Revenues	5112000000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	1510000000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	863000000	USD
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.81
CY2012Q2	us-gaap	Revenues Revenues	5221000000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1724000000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	1002000000	USD
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.11
CY2012Q3	us-gaap	Revenues Revenues	5343000000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1786000000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	1042000000	USD
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.21
CY2012Q4	us-gaap	Revenues Revenues	5250000000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	1725000000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	1036000000	USD
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.21
CY2011Q1	us-gaap	Revenues Revenues	4490000000	USD
CY2011Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	1137000000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	639000000	USD
CY2011Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.31
CY2011Q2	us-gaap	Revenues Revenues	4858000000	USD
CY2011Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1392000000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	785000000	USD
CY2011Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.61
CY2011Q3	us-gaap	Revenues Revenues	5101000000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1578000000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	904000000	USD
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.87
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.29
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.79
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.10
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.19
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.19
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.59
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.85
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.99

Files In Submission

Name	View Source	Status
0001193125-13-045658-index-headers.html	Edgar Link	pending
0001193125-13-045658-index.html	Edgar Link	pending
0001193125-13-045658.txt	Edgar Link	pending
0001193125-13-045658-xbrl.zip	Edgar Link	pending
d477110d10k.htm	Edgar Link	pending
d477110dex10a.htm	Edgar Link	pending
d477110dex10b.htm	Edgar Link	pending
d477110dex10c.htm	Edgar Link	pending
d477110dex12.htm	Edgar Link	pending
d477110dex21.htm	Edgar Link	pending
d477110dex23.htm	Edgar Link	pending
d477110dex24.htm	Edgar Link	pending
d477110dex31a.htm	Edgar Link	pending
d477110dex31b.htm	Edgar Link	pending
d477110dex32.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
g477110deloitte_sig.gif	Edgar Link	pending
g477110g00e79.jpg	Edgar Link	pending
g477110g29r42.jpg	Edgar Link	pending
g477110g35o46.jpg	Edgar Link	pending
g477110g37r87.jpg	Edgar Link	pending
g477110g43a99.jpg	Edgar Link	pending
g477110g45n71.jpg	Edgar Link	pending
g477110g51h37.jpg	Edgar Link	pending
g477110g54r41.jpg	Edgar Link	pending
g477110g55f68.jpg	Edgar Link	pending
g477110g97k74.jpg	Edgar Link	pending
g477110sig_jackkaraleski.gif	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
unp-20121231.xml	Edgar Link	completed
unp-20121231.xsd	Edgar Link	pending
unp-20121231_cal.xml	Edgar Link	unprocessable
unp-20121231_def.xml	Edgar Link	unprocessable
unp-20121231_lab.xml	Edgar Link	unprocessable
unp-20121231_pre.xml	Edgar Link	unprocessable

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$UNP
UNION PACIFIC CORP Stock $unp

2012 Q4 Form 10-K Financial Statement

#000119312513045658 Filed on February 08, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UNP UNION PACIFIC CORP Stock $unp

2012 Q4 Form 10-K Financial Statement

#000119312513045658 Filed on February 08, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UNP
UNION PACIFIC CORP Stock $unp