$UNP
UNION PACIFIC CORP Stock $unp

$unp Overview Financials Valuation SEC Filings Company Website

2010 Form 10-K Financial Statement

#000119312511024531 Filed on February 04, 2011

Income Statement

Concept	2010	2009 Q4	2009 Q3
Revenue	$16.97B	$3.754B	$3.671B
YoY Change	19.95%	-12.41%	-24.25%
Cost Of Revenue	$4.322B	$969.0M	$879.0M
YoY Change	26.86%	-18.57%	-45.61%
Gross Profit	$12.64B	$2.785B	$2.792B
YoY Change	17.76%	-10.05%	-13.56%
Gross Profit Margin	74.52%	74.19%	76.06%
Selling, General & Admin	$5.456B	$1.284B	$1.289B
YoY Change	4.06%	-9.64%	-11.04%
% of Gross Profit	43.15%	46.1%	46.17%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.487B	$373.0M	$363.0M
YoY Change	4.2%	12.35%	4.31%
% of Gross Profit	11.76%	13.39%	13.0%
Operating Expenses	$11.98B	$1.786B	$2.710B
YoY Change	11.33%	-8.64%	-25.36%
Operating Profit	$4.981B	$999.0M	$961.0M
YoY Change	47.41%	-12.45%	-20.91%
Interest Expense	$602.0M	-$153.0M	$156.0M
YoY Change	0.33%	25.41%	20.0%
% of Operating Profit	12.09%	-15.32%	16.23%
Other Income/Expense, Net	$54.00M	-$1.000M	$14.00M
YoY Change	-72.31%	-111.11%	-39.13%
Pretax Income	$4.433B	$869.0M	$819.0M
YoY Change	49.06%	-16.36%	-26.08%
Income Tax	$1.653B	$320.0M	$305.0M
% Of Pretax Income	37.29%	36.82%	37.24%
Net Earnings	$2.780B	$549.0M	$514.0M
YoY Change	47.09%	-16.94%	-26.88%
Net Earnings / Revenue	16.39%	14.62%	14.0%
Basic Earnings Per Share	$5.58	$1.09	$1.02
Diluted Earnings Per Share	$5.53	$1.08	$1.01
COMMON SHARES
Basic Shares Outstanding	498.2M shares	504.5M shares	503.1M shares
Diluted Shares Outstanding	502.9M shares		507.0M shares

Balance Sheet

Concept	2010	2009 Q4	2009 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.086B	$1.850B	$1.435B
YoY Change	-41.3%	48.12%	67.44%
Cash & Equivalents	$1.086B	$1.850B	$1.435B
Short-Term Investments
Other Short-Term Assets	$628.0M	$350.0M	$266.0M
YoY Change	-8.85%	43.44%	-55.89%
Inventory	$534.0M	$475.0M	$490.0M
Prepaid Expenses
Receivables	$1.184B	$666.0M	$727.0M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$3.432B	$3.680B	$3.217B
YoY Change	-6.74%	30.82%	11.35%
LONG-TERM ASSETS
Property, Plant & Equipment	$38.25B	$37.20B	$37.12B
YoY Change	2.83%	4.83%	5.16%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$1.137B	$1.036B	$1.013B
YoY Change	9.75%	6.37%	0.4%
Other Assets	$266.0M	$266.0M	$337.0M
YoY Change	0.0%	13.68%	-3.99%
Total Long-Term Assets	$39.66B	$38.50B	$38.47B
YoY Change	2.99%	4.93%	4.94%
TOTAL ASSETS
Total Short-Term Assets	$3.432B	$3.680B	$3.217B
Total Long-Term Assets	$39.66B	$38.50B	$38.47B
Total Assets	$43.09B	$42.18B	$41.69B
YoY Change	2.14%	6.77%	5.41%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$677.0M	$612.0M	$615.0M
YoY Change	10.62%	-2.7%	-22.25%
Accrued Expenses	$882.0M	$718.0M	$732.0M
YoY Change	22.84%	-5.15%	-10.29%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$239.0M	$212.0M	$173.0M
YoY Change	12.74%	-33.75%	-50.0%
Total Short-Term Liabilities	$2.952B	$2.682B	$2.748B
YoY Change	10.07%	-6.88%	-20.14%
LONG-TERM LIABILITIES
Long-Term Debt	$9.003B	$9.636B	$9.620B
YoY Change	-6.57%	11.96%	18.53%
Other Long-Term Liabilities	$1.813B	$2.021B	$2.297B
YoY Change	-10.29%	-19.35%	23.1%
Total Long-Term Liabilities	$10.82B	$2.021B	$2.297B
YoY Change	-7.21%	-19.35%	-76.99%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.952B	$2.682B	$2.748B
Total Long-Term Liabilities	$10.82B	$2.021B	$2.297B
Total Liabilities	$25.33B	$25.38B	$25.26B
YoY Change	-0.23%	4.91%	6.06%
SHAREHOLDERS EQUITY
Retained Earnings		$15.03B	$14.75B
YoY Change		9.84%
Common Stock		$1.384B	$1.384B
YoY Change		0.14%
Preferred Stock
YoY Change
Treasury Stock (at cost)		$2.924B	$2.954B
YoY Change		-2.31%
Treasury Stock Shares
Shareholders Equity	$17.76B	$16.80B	$16.43B
YoY Change
Total Liabilities & Shareholders Equity	$43.09B	$42.18B	$41.69B
YoY Change	2.14%	6.77%	5.41%

Cashflow Statement

Concept	2010	2009 Q4	2009 Q3
OPERATING ACTIVITIES
Net Income	$2.780B	$549.0M	$514.0M
YoY Change	47.09%	-16.94%	-26.88%
Depreciation, Depletion And Amortization	$1.487B	$373.0M	$363.0M
YoY Change	4.2%	12.35%	4.31%
Cash From Operating Activities	$4.105B	$1.005B	$691.0M
YoY Change	28.12%	-0.1%	-42.51%
INVESTING ACTIVITIES
Capital Expenditures	$2.482B	-$546.0M	-$626.0M
YoY Change	5.44%	-26.12%	-18.91%
Acquisitions
YoY Change
Other Investing Activities	$73.00M	$119.0M	$47.00M
YoY Change	-431.82%	1090.0%	-80.82%
Cash From Investing Activities	-$2.488B	-$427.0M	-$579.0M
YoY Change	15.99%	-41.43%	9.87%
FINANCING ACTIVITIES
Cash Dividend Paid	$602.0M
YoY Change	10.66%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net	$1.412B
YoY Change	62.11%
Cash From Financing Activities	-$2.381B	-163.0M	-333.0M
YoY Change	419.87%	-241.74%	-22.38%
NET CHANGE
Cash From Operating Activities	$4.105B	1.005B	691.0M
Cash From Investing Activities	-$2.488B	-427.0M	-579.0M
Cash From Financing Activities	-$2.381B	-163.0M	-333.0M
Net Change In Cash	-$764.0M	415.0M	-221.0M
YoY Change	-227.12%	5.87%	-189.84%
FREE CASH FLOW
Cash From Operating Activities	$4.105B	$1.005B	$691.0M
Capital Expenditures	$2.482B	-$546.0M	-$626.0M
Free Cash Flow	$1.623B	$1.551B	$1.317B
YoY Change	90.94%	-11.12%	-33.28%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2010	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2010Q2	dei	Entity Public Float EntityPublicFloat	38339000000	USD
CY2010	dei	Document Type DocumentType	10-K
CY2010	dei	Document Period End Date DocumentPeriodEndDate	2010-12-31
CY2010	dei	Amendment Flag AmendmentFlag	false
CY2010	dei	Entity Registrant Name EntityRegistrantName	UNION PACIFIC CORPORATION
CY2010	dei	Entity Central Index Key EntityCentralIndexKey	0000100885
CY2010	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2010	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2010	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2010	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2008	us-gaap	Payments Of Dividends PaymentsOfDividends	481000000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-12000000	USD
CY2009	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	114000000	USD
CY2008	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	106000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2381000000	USD
CY2009	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-458000000	USD
CY2008	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	371000000	USD
CY2008	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-935000000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-764000000	USD
CY2009	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	601000000	USD
CY2007Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	878000000	USD
CY2010	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2009	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	842000000	USD
CY2008	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	175000000	USD
CY2010Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	183000000	USD
CY2009Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	132000000	USD
CY2008Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	132000000	USD
CY2010	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	125000000	USD
CY2009	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	96000000	USD
CY2008	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	93000000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	-614000000	USD
CY2009	us-gaap	Interest Paid Net InterestPaidNet	-578000000	USD
CY2008	us-gaap	Interest Paid Net InterestPaidNet	-500000000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-936000000	USD
CY2009	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-452000000	USD
CY2008	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-699000000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	518000000	USD
CY2009	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	72000000	USD
CY2008	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-38000000	USD
CY2010	unp	Increase Decrease In Material And Supplies IncreaseDecreaseInMaterialAndSupplies	59000000	USD
CY2009	unp	Increase Decrease In Material And Supplies IncreaseDecreaseInMaterialAndSupplies	25000000	USD
CY2008	unp	Increase Decrease In Material And Supplies IncreaseDecreaseInMaterialAndSupplies	-3000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	17000000	USD
CY2009	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	106000000	USD
CY2008	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-51000000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	243000000	USD
CY2009	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-90000000	USD
CY2008	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-342000000	USD
CY2010	us-gaap	Liabilities Assumed LiabilitiesAssumed	0	USD
CY2009	us-gaap	Liabilities Assumed LiabilitiesAssumed	14000000	USD
CY2008	us-gaap	Liabilities Assumed LiabilitiesAssumed	0	USD
CY2008Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1249000000	USD
CY2010	unp	Deferred Income Taxes And Unrecognized Tax Benefits DeferredIncomeTaxesAndUnrecognizedTaxBenefits	672000000	USD
CY2009	unp	Deferred Income Taxes And Unrecognized Tax Benefits DeferredIncomeTaxesAndUnrecognizedTaxBenefits	718000000	USD
CY2008	unp	Deferred Income Taxes And Unrecognized Tax Benefits DeferredIncomeTaxesAndUnrecognizedTaxBenefits	545000000	USD
CY2007Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	15456000000	USD
CY2008	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-630000000	USD
CY2008	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1705000000	USD
CY2008	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	182000000	USD
CY2008	us-gaap	Dividends Cash DividendsCash	501000000	USD
CY2008Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	15315000000	USD
CY2009	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	50000000	USD
CY2009	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1940000000	USD
CY2009	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	90000000	USD
CY2009	us-gaap	Dividends Cash DividendsCash	544000000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	16801000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	-80000000	USD
CY2010	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2700000000	USD
CY2010	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	164000000	USD
CY2010	us-gaap	Dividends Cash DividendsCash	653000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	17763000000	USD
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.31	USD
CY2008	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.98	USD
CY2009	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.08	USD
CY2010	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1249000000	USD
CY2009	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	0	USD
CY2008	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1527000000	USD
CY2010	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 that operates in the </font><font style="font-family:Arial;font-size:10pt;">U.S</font><font style="font-family:Arial;font-size:10pt;">. We have </font><font style="font-family:Arial;font-size:10pt;">31,953 </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. 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 operating segment. Although revenues are analyzed 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 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;">2010</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;">2009</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;">2008</font></td></tr><tr style="height: 16px"><td style="width: 385px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;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:#D8D8D8;border-color:#000000;min-width:19px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,018</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 2,666</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;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:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,174</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;"> 1,271</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;"> 854</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;"> 1,344</font></td></tr><tr style="height: 16px"><td style="width: 385px; text-align:left;background-color:#D8D8D8;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:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 2,425</font></td><td style="width: 19px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 2,102</font></td><td style="width: 19px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 2,494</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;"> Energy </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;"> 3,489</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;"> 3,118</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;"> 3,810</font></td></tr><tr style="height: 16px"><td style="width: 385px; text-align:left;background-color:#D8D8D8;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:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 2,639</font></td><td style="width: 19px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 2,147</font></td><td style="width: 19px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"> </td><td style="width: 61px; text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 3,273</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;"> 3,227</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;"> 2,486</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;"> 3,023</font></td></tr><tr style="height: 16px"><td style="width: 385px; border-top-style:solid;border-top-width:1px;text-align:left;background-color:#D8D8D8;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:#D8D8D8;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:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 16,069</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 13,373</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 17,118</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;"> 896</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;"> 770</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;"> 852</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:#D8D8D8;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:#D8D8D8;border-color:#000000;min-width:19px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</font></td><td style="width: 61px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 16,965</font></td><td style="width: 19px; border-top-style:solid;border-top-width:1px;border-bottom-style:solid;border-bottom-width:2px;text-align:right;background-color:#D8D8D8;border-color:#000000;min-width:19px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: right;">$</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:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 14,143</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:#D8D8D8;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:#D8D8D8;border-color:#000000;min-width:61px;"><font style="FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;"> 17,970</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 are outside the </font><font style="font-family:Arial;font-size:10pt;">U.S</font><font style="font-family:Arial;font-size:10pt;">.</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></p><p style='margin-top:0pt; margin-bottom:0pt'> </p>
CY2010	unp	Agricultural Agricultural	3018000000	USD
CY2010	unp	Automotive Automotive	1271000000	USD
CY2010	unp	Chemicals Chemicals	2425000000	USD
CY2010	unp	Energy Energy	3489000000	USD
CY2010	unp	Industrial Products IndustrialProducts	2639000000	USD
CY2010	unp	Intermodal Intermodal	3227000000	USD
CY2009	unp	Intermodal Intermodal	2486000000	USD
CY2009	unp	Agricultural Agricultural	2666000000	USD
CY2009	unp	Chemicals Chemicals	2102000000	USD
CY2009	unp	Industrial Products IndustrialProducts	2147000000	USD
CY2008	unp	Intermodal Intermodal	3023000000	USD
CY2008	unp	Industrial Products IndustrialProducts	3273000000	USD
CY2008	unp	Energy Energy	3810000000	USD
CY2008	unp	Chemicals Chemicals	2494000000	USD
CY2008	unp	Automotive Automotive	1344000000	USD
CY2008	unp	Agricultural Agricultural	3174000000	USD
CY2009	unp	Automotive Automotive	854000000	USD
CY2009	unp	Energy Energy	3118000000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	74000000	USD
CY2010	unp	Share Based Compensation Net Of Tax ShareBasedCompensationNetOfTax	46000000	USD
CY2010	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	17000000	USD
CY2010	us-gaap	Restricted Stock Expense RestrictedStockExpense	57000000	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	51000000	USD
CY2009	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	19000000	USD
CY2009	us-gaap	Restricted Stock Expense RestrictedStockExpense	39000000	USD
CY2009	us-gaap	Share Based Compensation ShareBasedCompensation	58000000	USD
CY2009	unp	Share Based Compensation Net Of Tax ShareBasedCompensationNetOfTax	36000000	USD
CY2009	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	10000000	USD
CY2008	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	25000000	USD
CY2008	us-gaap	Restricted Stock Expense RestrictedStockExpense	40000000	USD
CY2008	us-gaap	Share Based Compensation ShareBasedCompensation	65000000	USD
CY2008	unp	Share Based Compensation Net Of Tax ShareBasedCompensationNetOfTax	40000000	USD
CY2008	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	54000000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	103000000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	1201000000	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	32904291	shares
CY2009Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	33559150	shares
CY2008Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	36961123	shares
CY2010Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-1098000000	USD
CY2009Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	139000000	USD
CY2009Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	1082000000	USD
CY2009Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-943000000	USD
CY2010Q4	us-gaap	Defined Benefit Plan Equity Securities DefinedBenefitPlanEquitySecurities	0.60
CY2010Q4	us-gaap	Defined Benefit Plan Debt Securities DefinedBenefitPlanDebtSecurities	0.31
CY2010Q4	us-gaap	Defined Benefit Plan Real Estate DefinedBenefitPlanRealEstate	0.04
CY2010Q4	us-gaap	Defined Benefit Plan Other Plan Assets DefinedBenefitPlanOtherPlanAssets	0.05
CY2010	us-gaap	Defined Benefit Plan Amortization Of Net Prior Service Cost Credit DefinedBenefitPlanAmortizationOfNetPriorServiceCostCredit	-33000000	USD
CY2010	us-gaap	Defined Benefit Plan Amortization Of Net Gains Losses DefinedBenefitPlanAmortizationOfNetGainsLosses	-83000000	USD
CY2010	us-gaap	Defined Benefit Plan Amounts That Will Be Amortized From Accumulated Other Comprehensive Income Loss In Next Fiscal Year DefinedBenefitPlanAmountsThatWillBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossInNextFiscalYear	50000000	USD
CY2009Q4	us-gaap	Defined Benefit Plan Equity Securities DefinedBenefitPlanEquitySecurities	0.61
CY2009Q4	us-gaap	Defined Benefit Plan Debt Securities DefinedBenefitPlanDebtSecurities	0.31
CY2009Q4	us-gaap	Defined Benefit Plan Real Estate DefinedBenefitPlanRealEstate	0.04
CY2009Q4	us-gaap	Defined Benefit Plan Other Plan Assets DefinedBenefitPlanOtherPlanAssets	0.04
CY2010Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.00
CY2009Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.00
CY2010	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Equity Securities Range Minimum DefinedBenefitPlanTargetAllocationPercentageOfAssetsEquitySecuritiesRangeMinimum	0.47
CY2010	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Equity Securities Range Maximum DefinedBenefitPlanTargetAllocationPercentageOfAssetsEquitySecuritiesRangeMaximum	0.63
CY2010	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Debt Securities Range Minimum DefinedBenefitPlanTargetAllocationPercentageOfAssetsDebtSecuritiesRangeMinimum	0.3
CY2010	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Debt Securities Range Maximum DefinedBenefitPlanTargetAllocationPercentageOfAssetsDebtSecuritiesRangeMaximum	0.4
CY2010	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Real Estate Range Minimum DefinedBenefitPlanTargetAllocationPercentageOfAssetsRealEstateRangeMinimum	0.02
CY2010	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Real Estate Range Maximum DefinedBenefitPlanTargetAllocationPercentageOfAssetsRealEstateRangeMaximum	0.08
CY2010	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Other Range Minimum DefinedBenefitPlanTargetAllocationPercentageOfAssetsOtherRangeMinimum	0.04
CY2010	us-gaap	Defined Benefit Plan Target Allocation Percentage Of Assets Other Range Maximum DefinedBenefitPlanTargetAllocationPercentageOfAssetsOtherRangeMaximum	0.06
CY2010	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 of an average long-term rate of return of 7.5%. We reduced our expected rate of return on plan assets to 7.5% in 2011 from 8% in 2010 to reflect our expected future returns on plan assets based on our current asset allocation strategy.
CY2010	us-gaap	Defined Benefit Plan Risk Management Practices DefinedBenefitPlanRiskManagementPractices	While we believe we can achieve a long-term average rate of return of 7.5%, we cannot be certain that the portfolio will perform to our expectations.
CY2010	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.
CY2010	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.
CY2010	unp	Railroad Retirement System Description RailroadRetirementSystemDescription	All Railroad employees are covered by the Railroad Retirement System (the System).
CY2010	us-gaap	Description Of Multiemployer Plan DescriptionOfMultiemployerPlan	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.
CY2010	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	13000000	USD
CY2010	unp	Railroad Retirement System Contributions RailroadRetirementSystemContributions	566000000	USD
CY2010	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	60000000	USD
CY2009	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	14000000	USD
CY2009	unp	Railroad Retirement System Contributions RailroadRetirementSystemContributions	562000000	USD
CY2009	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	48000000	USD
CY2008	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	14000000	USD
CY2008	unp	Railroad Retirement System Contributions RailroadRetirementSystemContributions	620000000	USD
CY2008	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	49000000	USD
CY2010	unp	Receivable Securitization Fees ReceivableSecuritizationFees	0	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	862000000	USD
CY2010	unp	Nonoperating Environmental Costs And Other NonoperatingEnvironmentalCostsAndOther	38000000	USD
CY2009	unp	Nonoperating Environmental Costs And Other NonoperatingEnvironmentalCostsAndOther	36000000	USD
CY2010	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	84000000	USD
CY2010	us-gaap	Investment Income Interest InvestmentIncomeInterest	4000000	USD
CY2009	unp	Receivable Securitization Fees ReceivableSecuritizationFees	9000000	USD
CY2009	us-gaap	Investment Income Interest InvestmentIncomeInterest	5000000	USD
CY2009	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	73000000	USD
CY2008	unp	Nonoperating Environmental Costs And Other NonoperatingEnvironmentalCostsAndOther	34000000	USD
CY2008	unp	Receivable Securitization Fees ReceivableSecuritizationFees	23000000	USD
CY2008	us-gaap	Investment Income Interest InvestmentIncomeInterest	21000000	USD
CY2008	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	87000000	USD
CY2010	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-21000000	USD
CY2009	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2008	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2010	unp	Receivable Securitization Fees Parenthetical ReceivableSecuritizationFeesParenthetical	6000000	USD
CY2009Q2	unp	Land Sale To Regional Transportation District LandSaleToRegionalTransportationDistrict	118000000	USD
CY2009Q2	unp	Pre Tax Gain On Land Sale To Regional Transportation District PreTaxGainOnLandSaleToRegionalTransportationDistrict	116000000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	119000000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	981000000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	550000000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	97000000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	647000000	USD
CY2010	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	1653000000	USD
CY2009	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	316000000	USD
CY2009	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	50000000	USD
CY2009	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	366000000	USD
CY2009	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	650000000	USD
CY2009	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	30000000	USD
CY2009	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	680000000	USD
CY2009	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	1084000000	USD
CY2008	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	698000000	USD
CY2008	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	73000000	USD
CY2008	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	771000000	USD
CY2008	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	646000000	USD
CY2008	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	33000000	USD
CY2008	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	679000000	USD
CY2008	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	1316000000	USD
CY2010	unp	Unrecognized Tax Benefits Expense Benefit UnrecognizedTaxBenefitsExpenseBenefit	25000000	USD
CY2009	unp	Unrecognized Tax Benefits Expense Benefit UnrecognizedTaxBenefitsExpenseBenefit	38000000	USD
CY2008	unp	Unrecognized Tax Benefits Expense Benefit UnrecognizedTaxBenefitsExpenseBenefit	-134000000	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
CY2009	unp	Unrecognized Federal Tax Benefits Expense Benefit UnrecognizedFederalTaxBenefitsExpenseBenefit	39000000	USD
CY2009	unp	Unrecognized State And Local Tax Benefits Expense Benefit UnrecognizedStateAndLocalTaxBenefitsExpenseBenefit	-1000000	USD
CY2008	unp	Unrecognized Federal Tax Benefits Expense Benefit UnrecognizedFederalTaxBenefitsExpenseBenefit	-121000000	USD
CY2008	unp	Unrecognized State And Local Tax Benefits Expense Benefit UnrecognizedStateAndLocalTaxBenefitsExpenseBenefit	-13000000	USD
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 Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.007
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
CY2009	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2009	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.032
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.008
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002
CY2009	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.364
CY2008	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2008	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.03
CY2008	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.009
CY2008	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.004
CY2008	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.36
CY2010	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	-0.003
CY2009	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	-0.008
CY2008	us-gaap	Effective Income Tax Rate Reconciliation Deductions EffectiveIncomeTaxRateReconciliationDeductions	-0.007
	unp	Income Tax Examination Interest Refund From Settlement With Taxing Authority IncomeTaxExaminationInterestRefundFromSettlementWithTaxingAuthority	17000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	11581000000	USD
CY2010Q4	unp	State Taxes Net Of Federal Benefits StateTaxesNetOfFederalBenefits	772000000	USD
CY2010Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	796000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	11296000000	USD
CY2009Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	10419000000	USD
CY2009Q4	unp	State Taxes Net Of Federal Benefits StateTaxesNetOfFederalBenefits	715000000	USD
CY2009Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	90000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	10705000000	USD
CY2010	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.
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
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	86000000	USD
CY2008Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	26000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	18000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	50000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	28000000	USD
CY2009	unp	Increases Decreases For Interest And Penalties IncreasesDecreasesForInterestAndPenalties	3000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	5000000	USD
CY2007Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	161000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	10000000	USD
CY2008Q4	unp	Unrecognized Tax Benefits That Would Not Impact The Effective Tax Rate UnrecognizedTaxBenefitsThatWouldNotImpactTheEffectiveTaxRate	53000000	USD
CY2010	us-gaap	Income Tax Examination Description IncomeTaxExaminationDescription	Internal Revenue Service (IRS) examinations have been completed and settled for all years prior to 1999, and the statute of limitations bars any additional tax assessments. Some interest calculations remain open back to 1986. The IRS has completed its examinations and issued notices of deficiency for tax years 1999 through 2006. We disagree with many of their proposed adjustments, and we are at IRS Appeals for these years. We anticipate a partial settlement of the tax years 1999-2004 during 2011. The IRS is examining the Corporation’s federal income tax returns for 2007 and 2008. Several state tax authorities are examining our state income tax returns for tax years 2003 through 2006.
CY2010Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2009Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	8000000	USD
CY2010Q4	unp	Current Liability For Unrecognized Tax Benefits CurrentLiabilityForUnrecognizedTaxBenefits	68000000	USD
CY2010Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	19000000	USD
CY2009Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	13000000	USD
CY2009	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	-11000000	USD
CY2008	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	-9000000	USD
CY2009Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	14000000	USD
CY2008Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	16000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	23000000	USD
CY2008	unp	Increases Decreases For Interest And Penalties IncreasesDecreasesForInterestAndPenalties	-68000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	4000000	USD
CY2009	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	3000000	USD
CY2008	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	55000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	90000000	USD
CY2010Q4	unp	Unrecognized Tax Benefits That Would Not Impact The Effective Tax Rate UnrecognizedTaxBenefitsThatWouldNotImpactTheEffectiveTaxRate	4000000	USD
CY2009Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	86000000	USD
CY2009Q4	unp	Unrecognized Tax Benefits That Would Not Impact The Effective Tax Rate UnrecognizedTaxBenefitsThatWouldNotImpactTheEffectiveTaxRate	25000000	USD
CY2008Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	79000000	USD
	unp	Income Tax Examination Tax Paid From Settlement With Taxing Authority IncomeTaxExaminationTaxPaidFromSettlementWithTaxingAuthority	52000000	USD
	unp	Income Tax Examination Interest Paid From Settlement With Taxing Authority IncomeTaxExaminationInterestPaidFromSettlementWithTaxingAuthority	67000000	USD
CY2010	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	6000000	USD
CY2009	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Retention Shares And Units WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfRetentionSharesAndUnits	1300000	shares
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	615000000	USD
CY2009	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Stock Options WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfStockOptions	1500000	shares
CY2008	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Retention Shares And Units WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfRetentionSharesAndUnits	1000000	shares
CY2008	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Stock Options WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfStockOptions	3400000	shares
CY2010	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	300000	shares
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-35000000	USD
CY2009Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-4000000	USD
CY2009	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4600000	shares
CY2008	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1000000	shares
CY2008	unp	Cost Of The Receivables Securitization Facility Other Income CostOfTheReceivablesSecuritizationFacilityOtherIncome	23000000	USD
CY2010	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Stock Options WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfStockOptions	3300000	shares
CY2010	unp	Weighted Average Number Of Shares Outstanding Dilutive Effect Of Retention Shares And Units WeightedAverageNumberOfSharesOutstandingDilutiveEffectOfRetentionSharesAndUnits	1400000	shares
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-88000000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	7000000	USD
CY2010	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	1000000	USD
CY2009	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	0	USD
CY2009	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	6000000	USD
CY2009	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	44000000	USD
CY2008	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	0	USD
CY2008	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-26000000	USD
CY2008	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	-604000000	USD
CY2010	unp	Deferred Taxes Activity Other Comprehensive Income DeferredTaxesActivityOtherComprehensiveIncome	57000000	USD
CY2009	unp	Deferred Taxes Activity Other Comprehensive Income DeferredTaxesActivityOtherComprehensiveIncome	-101000000	USD
CY2008	unp	Deferred Taxes Activity Other Comprehensive Income DeferredTaxesActivityOtherComprehensiveIncome	390000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	703000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-28000000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-3000000	USD
CY2010	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.
CY2010Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	5000000	USD
CY2010	unp	Receivables Collected By The Railroad ReceivablesCollectedByTheRailroad	16300000000	USD
CY2009	unp	Receivables Collected By The Railroad ReceivablesCollectedByTheRailroad	13800000000	USD
CY2010	unp	Cost Of The Receivables Securitization Facility Interest Expense CostOfTheReceivablesSecuritizationFacilityInterestExpense	6000000	USD
CY2009	unp	Cost Of The Receivables Securitization Facility Other Income CostOfTheReceivablesSecuritizationFacilityOtherIncome	9000000	USD
CY2009Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	339000000	USD
CY2009Q4	us-gaap	Interest And Dividends Payable Current InterestAndDividendsPayableCurrent	347000000	USD
CY2009Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	612000000	USD
CY2010Q4	us-gaap	Allowance For Doubtful Accounts Receivable Noncurrent AllowanceForDoubtfulAccountsReceivableNoncurrent	51000000	USD
CY2009Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	3000000	USD
CY2009Q4	us-gaap	Allowance For Doubtful Accounts Receivable Noncurrent AllowanceForDoubtfulAccountsReceivableNoncurrent	67000000	USD
CY2010Q4	unp	Total Capacity To Transfer Undivided Interests To Investors Under The Receivables Securitization Facility TotalCapacityToTransferUndividedInterestsToInvestorsUnderTheReceivablesSecuritizationFacility	600000000	USD
CY2010Q4	unp	Value Of The Outstanding Undivided Interest Held By Investors Under The Receivables Securitization Facility ValueOfTheOutstandingUndividedInterestHeldByInvestorsUnderTheReceivablesSecuritizationFacility	100000000	USD
CY2010Q4	unp	Accounts Receivable Supporting The Undivided Interest Held By Investors AccountsReceivableSupportingTheUndividedInterestHeldByInvestors	960000000	USD
CY2010Q4	unp	Value Of Interest Retained By Union Pacific Receivables Inc ValueOfInterestRetainedByUnionPacificReceivablesInc	960000000	USD
CY2009Q4	unp	Total Capacity To Transfer Undivided Interests To Investors Under The Receivables Securitization Facility TotalCapacityToTransferUndividedInterestsToInvestorsUnderTheReceivablesSecuritizationFacility	600000000	USD
CY2009Q4	unp	Value Of The Outstanding Undivided Interest Held By Investors Under The Receivables Securitization Facility ValueOfTheOutstandingUndividedInterestHeldByInvestorsUnderTheReceivablesSecuritizationFacility	400000000	USD
CY2009Q4	unp	Accounts Receivable Supporting The Undivided Interest Held By Investors AccountsReceivableSupportingTheUndividedInterestHeldByInvestors	817000000	USD
CY2009Q4	unp	Value Of Interest Retained By Union Pacific Receivables Inc ValueOfInterestRetainedByUnionPacificReceivablesInc	417000000	USD
CY2010Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	677000000	USD
CY2010Q4	us-gaap	Interest And Dividends Payable Current InterestAndDividendsPayableCurrent	383000000	USD
CY2010Q4	us-gaap	Accrued Employee Benefits Current AccruedEmployeeBenefitsCurrent	357000000	USD
CY2010Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	337000000	USD
CY2010Q4	unp	Accrued Casualty Costs AccruedCasualtyCosts	325000000	USD
CY2010Q4	unp	Equipment Rents Payable EquipmentRentsPayable	86000000	USD
CY2010Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	548000000	USD
CY2009Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	480000000	USD
CY2009Q4	unp	Equipment Rents Payable EquipmentRentsPayable	89000000	USD
CY2009Q4	unp	Accrued Casualty Costs AccruedCasualtyCosts	379000000	USD
CY2009Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	224000000	USD
CY2010Q4	unp	Fixed Rate Debt Securities Containing Call Provisions FixedRateDebtSecuritiesContainingCallProvisions	303000000	USD
CY2009Q4	unp	Fixed Rate Debt Securities Containing Call Provisions FixedRateDebtSecuritiesContainingCallProvisions	320000000	USD
CY2010Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	0	USD
CY2010Q4	unp	Description Of Accounting For Termination Of Interest Rate Fair Value Hedge DescriptionOfAccountingForTerminationOfInterestRateFairValueHedge	On February 25, 2010, we elected to terminate an interest rate swap agreement with a notional amount of $250 million prior to the scheduled maturity and received cash of $20 million (which is comprised of $16 million for the fair value of the swap that was terminated and $4 million of accrued but unpaid interest receivable). We designated the swap agreement as a fair value hedge, and as such the unamortized adjustment to debt for the change in fair value of the swap remains classified as debt due after one year in our Consolidated Statements of Financial Position and will be amortized as a reduction to interest expense through April 15, 2012. As of December 31, 2010, we do not have any interest rate fair value hedges outstanding.
CY2010Q4	unp	Fair Value Of Total Debt In Excess Of Carrying Value FairValueOfTotalDebtInExcessOfCarryingValue	1200000000	USD
CY2009Q4	unp	Fair Value Of Total Debt In Excess Of Carrying Value FairValueOfTotalDebtInExcessOfCarryingValue	945000000	USD
CY2009Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	10800000000	USD
CY2010Q4	us-gaap	Derivative Amount Of Hedged Item DerivativeAmountOfHedgedItem	0	USD
CY2010Q4	us-gaap	Percentage Of Debt Hedged By Interest Rate Derivatives PercentageOfDebtHedgedByInterestRateDerivatives	0
CY2010Q4	us-gaap	Interest Rate Fair Value Hedge Asset At Fair Value InterestRateFairValueHedgeAssetAtFairValue	0	USD
CY2009Q4	us-gaap	Derivative Amount Of Hedged Item DerivativeAmountOfHedgedItem	250000000	USD
CY2009Q4	us-gaap	Percentage Of Debt Hedged By Interest Rate Derivatives PercentageOfDebtHedgedByInterestRateDerivatives	0.03
CY2009Q4	us-gaap	Interest Rate Fair Value Hedge Asset At Fair Value InterestRateFairValueHedgeAssetAtFairValue	15000000	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
CY2009	us-gaap	Gain Loss On Components Excluded From Assessment Of Interest Rate Fair Value Hedge Effectiveness GainLossOnComponentsExcludedFromAssessmentOfInterestRateFairValueHedgeEffectiveness	8000000	USD
CY2009	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	8000000	USD
CY2008	us-gaap	Gain Loss On Components Excluded From Assessment Of Interest Rate Fair Value Hedge Effectiveness GainLossOnComponentsExcludedFromAssessmentOfInterestRateFairValueHedgeEffectiveness	1000000	USD
CY2008	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	2000000	USD
CY2010	us-gaap	Gain Loss On Price Risk Derivatives Net GainLossOnPriceRiskDerivativesNet	0	USD
CY2009	us-gaap	Gain Loss On Price Risk Derivatives Net GainLossOnPriceRiskDerivativesNet	0	USD
CY2008	us-gaap	Gain Loss On Price Risk Derivatives Net GainLossOnPriceRiskDerivativesNet	1000000	USD
CY2010Q1	us-gaap	Notional Amount Of Interest Rate Fair Value Hedge Derivatives NotionalAmountOfInterestRateFairValueHedgeDerivatives	250000000	USD
CY2010Q1	unp	Early Termination Cash Received EarlyTerminationCashReceived	20000000	USD
CY2010Q1	us-gaap	Deferred Gain Loss On Discontinuation Of Interest Rate Fair Value Hedge DeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge	16000000	USD
CY2010Q1	unp	Cash Received For Accrued But Unpaid Interest Receivable CashReceivedForAccruedButUnpaidInterestReceivable	4000000	USD
CY2010Q4	us-gaap	Interest Rate Fair Value Hedge Derivative At Fair Value Net InterestRateFairValueHedgeDerivativeAtFairValueNet	0	USD
CY2010Q4	us-gaap	Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome	3000000	USD
CY2009Q4	us-gaap	Unrealized Gain Loss On Interest Rate Cash Flow Hedges Pretax Accumulated Other Comprehensive Income UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncome	3000000	USD
CY2010Q4	us-gaap	Interest Rate Cash Flow Hedge Derivative At Fair Value Net InterestRateCashFlowHedgeDerivativeAtFairValueNet	0	USD
CY2009Q4	us-gaap	Interest Rate Cash Flow Hedge Derivative At Fair Value Net InterestRateCashFlowHedgeDerivativeAtFairValueNet	0	USD
CY2010Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	10400000000	USD
CY2009Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	0	USD
CY2009Q4	us-gaap	Retained Earnings Unappropriated RetainedEarningsUnappropriated	11600000000	USD
CY2010Q4	us-gaap	Long Term Debt LongTermDebt	9242000000	USD
CY2009Q4	us-gaap	Long Term Debt LongTermDebt	9848000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	339000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	646000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	774000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	794000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	456000000	USD
CY2010Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	6233000000	USD
CY2009Q4	unp	Debt Instrument Covenant In Compliance DebtInstrumentCovenantInCompliance	At December 31, 2010, and December 31, 2009 (and at all times during these periods), we were in compliance with this covenant.
CY2010	us-gaap	Line Of Credit Facility Expiration Date LineOfCreditFacilityExpirationDate	April 2012
CY2010Q3	us-gaap	Debt Instrument Issuance Date DebtInstrumentIssuanceDate	2010-08-02
CY2010Q3	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	500000000	USD
CY2010Q3	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.04
CY2010Q3	us-gaap	Debt Instrument Maturity Date DebtInstrumentMaturityDate	2021-02-01
CY2010Q4	unp	Debt Reclassified As Long Term DebtReclassifiedAsLongTerm	100000000	USD
CY2009Q4	unp	Debt Reclassified As Long Term DebtReclassifiedAsLongTerm	320000000	USD
CY2010Q4	unp	Carrying Value Of Equipment Serving As Collateral For Capital Leases And Other Types Of Equipment Obligations CarryingValueOfEquipmentServingAsCollateralForCapitalLeasesAndOtherTypesOfEquipmentObligations	3200000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	0	USD
CY2010	us-gaap	Repayments Of Commercial Paper RepaymentsOfCommercialPaper	0	USD
CY2010Q4	us-gaap	Retained Earnings Unappropriated RetainedEarningsUnappropriated	12900000000	USD
CY2009Q4	unp	Carrying Value Of Equipment Serving As Collateral For Capital Leases And Other Types Of Equipment Obligations CarryingValueOfEquipmentServingAsCollateralForCapitalLeasesAndOtherTypesOfEquipmentObligations	3400000000	USD
CY1997Q1	unp	Value Of Missouri Pacific Railroad Company Assets That Secured Mortgage Bonds ValueOfMissouriPacificRailroadCompanyAssetsThatSecuredMortgageBonds	6000000000	USD
CY2010Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1900000000	USD
CY2010Q4	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	0	USD
CY2010Q4	unp	Allowable Debt Per Debt To Net Worth Coverage Ratio As Defined In The Facility AllowableDebtPerDebtToNetWorthCoverageRatioAsDefinedInTheFacility	35500000000	USD
CY2010Q4	unp	Outstanding Debt As Defined By Facility OutstandingDebtAsDefinedByFacility	9700000000	USD
CY2010Q4	us-gaap	Commercial Paper CommercialPaper	0	USD
CY2010Q1	unp	Board Of Directors Authorized Debt Issuance BoardOfDirectorsAuthorizedDebtIssuance	3000000000	USD
CY2010Q4	unp	Board Of Directors Remaining Debt Issuance BoardOfDirectorsRemainingDebtIssuance	2500000000	USD
CY2010Q3	us-gaap	Debt Conversion Original Debt Amount DebtConversionOriginalDebtAmount	376000000	USD
CY2010Q3	us-gaap	Debt Conversion Original Debt Interest Rate Of Debt DebtConversionOriginalDebtInterestRateOfDebt	0.07875
CY2010Q3	us-gaap	Debt Conversion Original Debt Issuance Date Of Debt Year DebtConversionOriginalDebtIssuanceDateOfDebtYear	2019
CY2010Q3	us-gaap	Debt Conversion Converted Instrument Issuance Date Day Month And Year DebtConversionConvertedInstrumentIssuanceDateDayMonthAndYear	2010-07-14
CY2010Q3	us-gaap	Debt Issuance Costs Incurred During Noncash Or Partial Noncash Transaction DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction	2000000	USD
CY2010Q3	unp	Accrued Interest Debt Exchange Existing Notes AccruedInterestDebtExchangeExistingNotes	15000000	USD
CY2010Q3	us-gaap	Debt Conversion Converted Instrument Amount DebtConversionConvertedInstrumentAmount	376000000	USD
CY2010Q3	us-gaap	Payment Of Financing And Stock Issuance Costs PaymentOfFinancingAndStockIssuanceCosts	96000000	USD
CY2010Q3	us-gaap	Debt Conversion Converted Instrument Expiration Or Due Date Day Month And Year DebtConversionConvertedInstrumentExpirationOrDueDateDayMonthAndYear	2040-07-15
CY2010Q3	us-gaap	Debt Conversion Converted Instrument Rate DebtConversionConvertedInstrumentRate	0.0578
CY2010Q4	unp	Secured Debt Under Receivables Securitization Facility SecuredDebtUnderReceivablesSecuritizationFacility	100000000	USD
CY2010Q1	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-16000000	USD
CY2010Q1	unp	Debt Redemption Due Date Of Debt Day Month Year DebtRedemptionDueDateOfDebtDayMonthYear	2012-04-15
CY2010Q1	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	175000000	USD
CY2010Q4	unp	Debt Redemption Due Date Of Debt Day Month Year DebtRedemptionDueDateOfDebtDayMonthYear	2011-01-15
CY2010Q4	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	400000000	USD
CY2010Q4	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-5000000	USD
CY2010Q1	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.065
CY2010Q4	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0665
CY2010Q1	unp	Board Of Directors Remaining Debt Issuance BoardOfDirectorsRemainingDebtIssuance	2250000000	USD
CY2010Q4	unp	Future Minimum Lease Payments Vies FutureMinimumLeasePaymentsVies	4200000000	USD
CY2010Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02	USD
CY2010Q2	us-gaap	Revenues Revenues	4182000000	USD
CY2010Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1279000000	USD
CY2010Q2	us-gaap	Net Income Loss NetIncomeLoss	711000000	USD
CY2010Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.42	USD
CY2010Q3	us-gaap	Revenues Revenues	4408000000	USD
CY2010Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	1401000000	USD
CY2010Q3	us-gaap	Net Income Loss NetIncomeLoss	778000000	USD
CY2010Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.58	USD
CY2010Q4	us-gaap	Revenues Revenues	4410000000	USD
CY2010Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	311000000	USD
CY2010Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	251000000	USD
CY2010Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	253000000	USD
CY2010Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	261000000	USD
CY2010Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	262000000	USD
CY2010Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	1355000000	USD
CY2010Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	2693000000	USD
CY2010Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	784000000	USD
CY2010Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	1909000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	613000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	526000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	461000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	382000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	340000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	2599000000	USD
CY2010Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	4921000000	USD
CY2010Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	2520000000	USD
CY2009Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	2754000000	USD
CY2010Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	901000000	USD
CY2009Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	927000000	USD
CY2010	unp	Rent Expense For Operating Leases RentExpenseForOperatingLeases	624000000	USD
CY2009	unp	Rent Expense For Operating Leases RentExpenseForOperatingLeases	686000000	USD
CY2008	unp	Rent Expense For Operating Leases RentExpenseForOperatingLeases	747000000	USD
CY2010Q4	unp	Treasury Stock Acquired Repurchase Board Authorization TreasuryStockAcquiredRepurchaseBoardAuthorization	On May 1, 2008, our Board of Directors authorized the repurchase of 40 million common shares by March 31, 2011.
CY2010	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	75.06	USD
CY2010Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	0	USD
CY2010Q2	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	71.74	USD
CY2010Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	73.19	USD
CY2010Q4	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	89.39	USD
CY2009Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	0	USD
CY2009Q2	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	0	USD
CY2009Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	0	USD
CY2009Q4	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	0	USD
CY2009	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	0	USD
CY2010Q4	unp	Remaining Number Of Shares Yet To Be Repurchased RemainingNumberOfSharesYetToBeRepurchased	15936694	shares
CY2010	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	-16640396	shares
CY2010Q1	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0	shares
CY2010Q2	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	-6496400	shares
CY2010Q3	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	-7643400	shares
CY2010Q4	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	-2500596	shares
CY2009Q1	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0	shares
CY2009Q2	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0	shares
CY2009Q3	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0	shares
CY2009Q4	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0	shares
CY2009	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0	shares
CY2011Q1	unp	Treasury Stock Acquired Repurchase Board Authorization TreasuryStockAcquiredRepurchaseBoardAuthorization	On February 3, 2011, our Board of Directors authorized us to repurchase up to 40 million additional shares of our common stock under a new program effective from April 1, 2011 through March 31, 2014.
CY2009Q4	us-gaap	Revenues Revenues	3754000000	USD
CY2009Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	999000000	USD
CY2009Q4	us-gaap	Net Income Loss NetIncomeLoss	549000000	USD
CY2009Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.09	USD
CY2010Q1	us-gaap	Revenues Revenues	3965000000	USD
CY2010Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	988000000	USD
CY2010Q1	us-gaap	Net Income Loss NetIncomeLoss	516000000	USD
CY2010Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	1313000000	USD
CY2010Q4	us-gaap	Net Income Loss NetIncomeLoss	775000000	USD
CY2010Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.58	USD
CY2009Q1	us-gaap	Revenues Revenues	3415000000	USD
CY2009Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	671000000	USD
CY2009Q1	us-gaap	Net Income Loss NetIncomeLoss	362000000	USD
CY2009Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.72	USD
CY2009Q2	us-gaap	Revenues Revenues	3303000000	USD
CY2009Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	748000000	USD
CY2009Q2	us-gaap	Net Income Loss NetIncomeLoss	465000000	USD
CY2009Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.92	USD
CY2009Q3	us-gaap	Revenues Revenues	3671000000	USD
CY2009Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	961000000	USD
CY2009Q3	us-gaap	Net Income Loss NetIncomeLoss	514000000	USD
CY2009Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.02	USD
CY2009Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.72	USD
CY2010Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01	USD
CY2010Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.40	USD
CY2010Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.56	USD
CY2010Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.56	USD
CY2009Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.92	USD
CY2009Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01	USD
CY2009Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08	USD

Files In Submission

Name	View Source	Status
0001193125-11-024531-index-headers.html	Edgar Link	pending
0001193125-11-024531-index.html	Edgar Link	pending
0001193125-11-024531.txt	Edgar Link	pending
0001193125-11-024531-xbrl.zip	Edgar Link	pending
d10k.htm	Edgar Link	pending
defnref.xml	Edgar Link	unprocessable
dex10a.htm	Edgar Link	pending
dex10b.htm	Edgar Link	pending
dex10c.htm	Edgar Link	pending
dex10d.htm	Edgar Link	pending
dex10e.htm	Edgar Link	pending
dex12.htm	Edgar Link	pending
dex21.htm	Edgar Link	pending
dex23.htm	Edgar Link	pending
dex24.htm	Edgar Link	pending
dex31a.htm	Edgar Link	pending
dex31b.htm	Edgar Link	pending
dex32.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
g145170g29v21.jpg	Edgar Link	pending
g145170g37u81.jpg	Edgar Link	pending
g145170txp56.jpg	Edgar Link	pending
g145170tx_006.jpg	Edgar Link	pending
g145170tx_021.jpg	Edgar Link	pending
g145170tx_027a.jpg	Edgar Link	pending
g145170tx_027b.jpg	Edgar Link	pending
g145170tx_028a.jpg	Edgar Link	pending
g145170tx_028b.jpg	Edgar Link	pending
g145170tx_029a.jpg	Edgar Link	pending
g145170tx_029b.jpg	Edgar Link	pending
g145170tx_030.jpg	Edgar Link	pending
R1.xml	Edgar Link	unprocessable
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unp-20101231.xml	Edgar Link	completed
unp-20101231.xsd	Edgar Link	pending
unp-20101231_cal.xml	Edgar Link	unprocessable
unp-20101231_def.xml	Edgar Link	unprocessable
unp-20101231_lab.xml	Edgar Link	unprocessable
unp-20101231_pre.xml	Edgar Link	unprocessable

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$UNP
UNION PACIFIC CORP Stock $unp

2010 Form 10-K Financial Statement

#000119312511024531 Filed on February 04, 2011

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UNP UNION PACIFIC CORP Stock $unp

2010 Form 10-K Financial Statement

#000119312511024531 Filed on February 04, 2011

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UNP
UNION PACIFIC CORP Stock $unp