$UNP
UNION PACIFIC CORP Stock $unp

$unp Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000143774924003599 Filed on February 09, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$6.031B	$6.159B	$24.12B
YoY Change	-0.41%	-0.34%	-3.04%
Cost Of Revenue	$1.271B	$1.404B	$5.507B
YoY Change	-10.43%	-5.52%	-6.36%
Gross Profit	$4.760B	$4.755B	$18.61B
YoY Change	2.65%	1.3%	-2.01%
Gross Profit Margin	78.93%	77.2%	77.17%
Selling, General & Admin	$1.439B	$1.398B	$5.765B
YoY Change	1.77%	-0.99%	4.01%
% of Gross Profit	30.23%	29.4%	30.97%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$594.0M	$589.0M	$2.318B
YoY Change	3.85%	3.51%	3.21%
% of Gross Profit	12.48%	12.39%	12.45%
Operating Expenses	$2.388B	$2.348B	$9.530B
YoY Change	1.92%	2.89%	4.99%
Operating Profit	$2.372B	$2.407B	$9.082B
YoY Change	3.4%	-0.21%	-8.42%
Interest Expense	-$324.0M	-$331.0M	-$1.340B
YoY Change	-196.43%	-0.6%	5.43%
% of Operating Profit	-13.66%	-13.75%	-14.75%
Other Income/Expense, Net	$92.00M	$108.0M	$491.0M
YoY Change	-50.0%	17.39%	15.26%
Pretax Income	$2.140B	$2.184B	$8.233B
YoY Change	-0.09%	0.6%	-9.25%
Income Tax	$499.0M	$532.0M	$1.854B
% Of Pretax Income	23.32%	24.36%	22.52%
Net Earnings	$1.641B	$1.652B	$6.379B
YoY Change	0.67%	0.85%	-8.85%
Net Earnings / Revenue	27.21%	26.82%	26.45%
Basic Earnings Per Share	$2.69		$10.47
Diluted Earnings Per Share	$2.69	$2.71	$10.45
COMMON SHARES
Basic Shares Outstanding	609.8M	609.6M	609.2M
Diluted Shares Outstanding	610.2M		610.2M

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$945.0M	$1.071B	$1.071B
YoY Change	-12.42%	5.1%	5.1%
Cash & Equivalents	$925.0M	$1.055B	$1.055B
Short-Term Investments	$20.00M	$16.00M	$16.00M
Other Short-Term Assets	$317.0M	$3.077B	$3.077B
YoY Change	7.09%	4.91%	4.91%
Inventory	$770.0M	$743.0M	$743.0M
Prepaid Expenses
Receivables	$2.162B	$2.073B	$2.073B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$4.194B	$4.148B	$4.148B
YoY Change	3.35%	4.96%	4.96%
LONG-TERM ASSETS
Property, Plant & Equipment	$59.04B	$59.04B	$59.04B
YoY Change	4.92%	2.31%	2.31%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$2.651B	$2.605B	$2.605B
YoY Change	8.69%	9.68%	9.68%
Other Assets	$1.378B	$1.338B	$1.338B
YoY Change	-7.95%	-5.24%	-5.24%
Total Long-Term Assets	$63.07B	$62.98B	$62.98B
YoY Change	1.88%	2.42%	2.42%
TOTAL ASSETS
Total Short-Term Assets	$4.194B	$4.148B	$4.148B
Total Long-Term Assets	$63.07B	$62.98B	$62.98B
Total Assets	$67.27B	$67.13B	$67.13B
YoY Change	1.97%	2.57%	2.57%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$814.0M	$856.0M	$856.0M
YoY Change	-14.5%	9.18%	9.18%
Accrued Expenses	$1.378B	$1.584B	$1.584B
YoY Change	3.53%	66.39%	66.39%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$733.0M	$1.423B	$1.423B
YoY Change	-71.72%	-15.2%	-15.2%
Total Short-Term Liabilities	$4.534B	$5.106B	$5.106B
YoY Change	-26.98%	-7.5%	-7.5%
LONG-TERM LIABILITIES
Long-Term Debt	$31.20B	$31.16B	$31.16B
YoY Change	0.01%	-1.55%	-1.55%
Other Long-Term Liabilities	$2.726B	$2.959B	$2.959B
YoY Change	51.78%	-4.08%	-4.08%
Total Long-Term Liabilities	$33.92B	$34.12B	$34.12B
YoY Change	1788.7%	-1.78%	-1.78%
TOTAL LIABILITIES
Total Short-Term Liabilities	$4.534B	$5.106B	$5.106B
Total Long-Term Liabilities	$33.92B	$34.12B	$34.12B
Total Liabilities	$51.60B	$52.34B	$52.34B
YoY Change	-3.57%	-1.77%	-1.77%
SHAREHOLDERS EQUITY
Retained Earnings	$62.94B	$62.09B
YoY Change	5.38%	5.44%
Common Stock	$2.783B	$2.782B
YoY Change	0.04%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$54.66B	$54.67B
YoY Change	0.13%	1.23%
Treasury Stock Shares
Shareholders Equity	$15.67B	$14.79B	$14.79B
YoY Change
Total Liabilities & Shareholders Equity	$67.27B	$67.13B	$67.13B
YoY Change	1.97%	2.57%	2.57%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$1.641B	$1.652B	$6.379B
YoY Change	0.67%	0.85%	-8.85%
Depreciation, Depletion And Amortization	$594.0M	$589.0M	$2.318B
YoY Change	3.85%	3.51%	3.21%
Cash From Operating Activities	$2.122B	$2.395B	$8.379B
YoY Change	15.33%	4.49%	-10.5%
INVESTING ACTIVITIES
Capital Expenditures	$797.0M	$1.024B	$3.606B
YoY Change	3.24%	-210.11%	-199.61%
Acquisitions
YoY Change
Other Investing Activities	-$5.000M	$7.000M	-$61.00M
YoY Change	-105.49%	-61.11%	-140.94%
Cash From Investing Activities	-$802.0M	-$1.017B	-$3.667B
YoY Change	-0.37%	11.51%	5.65%
FINANCING ACTIVITIES
Cash Dividend Paid	$795.0M		$3.173B
YoY Change	0.0%		0.44%
Common Stock Issuance & Retirement, Net			-$705.0M
YoY Change			-88.78%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-1.451B	-1.085B	-4.625B
YoY Change	56.53%	-35.3%	-21.44%
NET CHANGE
Cash From Operating Activities	2.122B	2.395B	8.379B
Cash From Investing Activities	-802.0M	-1.017B	-3.667B
Cash From Financing Activities	-1.451B	-1.085B	-4.625B
Net Change In Cash	-131.0M	293.0M	87.00M
YoY Change	-221.3%	-198.65%	2075.0%
FREE CASH FLOW
Cash From Operating Activities	$2.122B	$2.395B	$8.379B
Capital Expenditures	$797.0M	$1.024B	$3.606B
Free Cash Flow	$1.325B	$1.371B	$4.773B
YoY Change	24.06%	-57.45%	-63.23%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2.5
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	2.5
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1400000000
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1400000000
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	1112854806
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	1112623886
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	609703814
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	612393321
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	4.29
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	5.08
CY2023	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	5.2
CY2023	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	pure
CY2023	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	pure
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	31979909
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	33185971
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	34011624
CY2022	unp	Weighted Average Maturity Of Pension Plan Debt Portfolio WeightedAverageMaturityOfPensionPlanDebtPortfolio	P21Y
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	31000000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-92000000	usd
CY2023	unp	Receivables Securitization Facility Maturity Date ReceivablesSecuritizationFacilityMaturityDate	2025-07-31
CY2023	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	31000000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-92000000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-237000000	usd
CY2023	dei	Document Type DocumentType	10-K
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	1-6075
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	UT
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-2626465
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	1400 Douglas Street
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Omaha
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	NE
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	68179
CY2023	dei	City Area Code CityAreaCode	402
CY2023	dei	Local Phone Number LocalPhoneNumber	544-5000
CY2023	dei	Security12b Title Security12bTitle	Common Stock (Par Value $2.50 per share)
CY2023	dei	Trading Symbol TradingSymbol	UNP
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	123000000000	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	609777914
CY2023	dei	Auditor Firm AuditorFirmId	34
CY2023	dei	Auditor Name AuditorName	Deloitte & Touche LLP
CY2023	dei	Auditor Location AuditorLocation	Omaha, Nebraska
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CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4158000000	usd
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CY2022	us-gaap	Fuel Costs FuelCosts	3439000000	usd
CY2021	us-gaap	Fuel Costs FuelCosts	2049000000	usd
CY2023	unp	Purchased Services And Material PurchasedServicesAndMaterial	2616000000	usd
CY2022	unp	Purchased Services And Material PurchasedServicesAndMaterial	2442000000	usd
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CY2022	unp	Equipment And Other Rents EquipmentAndOtherRents	898000000	usd
CY2021	unp	Equipment And Other Rents EquipmentAndOtherRents	859000000	usd
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CY2023	us-gaap	Costs And Expenses CostsAndExpenses	15037000000	usd
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CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	9917000000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	9338000000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	491000000	usd
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CY2022	us-gaap	Interest Expense InterestExpense	1271000000	usd
CY2021	us-gaap	Interest Expense InterestExpense	1157000000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	8233000000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	9072000000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	8478000000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1854000000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2074000000	usd
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CY2022Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	31648000000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1245000000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1300000000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	13123000000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	13033000000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1714000000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1785000000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	52344000000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	53286000000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	2782000000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	2782000000	usd
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5193000000	usd
CY2022Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5080000000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	62093000000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	58887000000	usd
CY2023Q4	us-gaap	Treasury Stock Value TreasuryStockValue	54666000000	usd
CY2022Q4	us-gaap	Treasury Stock Value TreasuryStockValue	54004000000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-614000000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-582000000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	14788000000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	12163000000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	67132000000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	65449000000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	6379000000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	6998000000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	6523000000	usd
CY2023	us-gaap	Depreciation Depreciation	2318000000	usd
CY2022	us-gaap	Depreciation Depreciation	2246000000	usd
CY2021	us-gaap	Depreciation Depreciation	2208000000	usd
CY2023	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	117000000	usd
CY2022	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	262000000	usd
CY2021	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	154000000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	132000000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	152000000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	56000000	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	177000000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	169000000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	217000000	usd
CY2023	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	2000000	usd
CY2022	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	120000000	usd
CY2021	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	-17000000	usd
CY2023	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	38000000	usd
CY2022	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-5000000	usd
CY2021	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-31000000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-215000000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	565000000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	184000000	usd
CY2023	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	129000000	usd
CY2022	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-273000000	usd
CY2021	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	188000000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	8379000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9362000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9032000000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3606000000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3620000000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2936000000	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	61000000	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-149000000	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-227000000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3667000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3471000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2709000000	usd
CY2023	us-gaap	Payments Of Dividends PaymentsOfDividends	3173000000	usd
CY2022	us-gaap	Payments Of Dividends PaymentsOfDividends	3159000000	usd
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	2800000000	usd
CY2023	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	2190000000	usd
CY2022	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	2291000000	usd
CY2021	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	1299000000	usd
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1599000000	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	6080000000	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	4201000000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	705000000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	6282000000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	7291000000	usd
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-156000000	usd
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-235000000	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	31000000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-4625000000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5887000000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-7158000000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	87000000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	4000000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-835000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	987000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	983000000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	1818000000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	1074000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	987000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	983000000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	137000000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	152000000	usd
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	263000000	usd
CY2023	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	0	usd
CY2022	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	0	usd
CY2021	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	100000000	usd
CY2023	unp	Repurchase Of Common Stock Not Yet Paid RepurchaseOfCommonStockNotYetPaid	5000000	usd
CY2022	unp	Repurchase Of Common Stock Not Yet Paid RepurchaseOfCommonStockNotYetPaid	0	usd
CY2021	unp	Repurchase Of Common Stock Not Yet Paid RepurchaseOfCommonStockNotYetPaid	0	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-1486000000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-2060000000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-1658000000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	1268000000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	1156000000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	1087000000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	16958000000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	6523000000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	679000000	usd
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	92000000	usd
CY2021	unp	Treasury Stock Value Acquired Cost Method Including Amount Paid In Excess TreasuryStockValueAcquiredCostMethodIncludingAmountPaidInExcess	7291000000	usd
CY2021	us-gaap	Dividends Dividends	2800000000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	14161000000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	6998000000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	332000000	usd
CY2022	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	114000000	usd
CY2022	unp	Treasury Stock Value Acquired Cost Method Including Amount Paid In Excess TreasuryStockValueAcquiredCostMethodIncludingAmountPaidInExcess	6282000000	usd
CY2022	us-gaap	Dividends Dividends	3160000000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	12163000000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	6379000000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-32000000	usd
CY2023	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	163000000	usd
CY2023	unp	Treasury Stock Value Acquired Cost Method Including Amount Paid In Excess TreasuryStockValueAcquiredCostMethodIncludingAmountPaidInExcess	712000000	usd
CY2023	us-gaap	Dividends Dividends	3173000000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	14788000000	usd
CY2023	us-gaap	Nature Of Operations NatureOfOperations	<p style="font-family: "arial", Times, serif; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;"><b><em style="font: inherit;">1.</em> Nature of Operations</b></p> <p style="font-family: "arial", Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;"> </p> <p style="font-family: "arial", Times, serif; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;"><b>Operations and Segmentation</b> – We are a Class I railroad operating in the U.S. Our network includes 32,693 route miles, connecting Pacific Coast and Gulf Coast ports with the Midwest and Eastern U.S. gateways and providing several corridors to key Mexican and Canadian gateways. We own 26,110 miles and operate on the remainder pursuant to trackage rights or leases. We serve the western <em style="font: inherit;">two</em>-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, Pacific Coast, and East Coast ports and across the Mexican and Canadian borders.</p> <p style="font-family: "arial", Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;"> </p> <p style="font-family: "arial", Times, serif; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">The Railroad, along with its subsidiaries and rail affiliates, is our <span style="-sec-ix-hidden:c106202141">one</span> reportable operating segment. Although we provide and analyze revenues by commodity group, we treat the financial results of the Railroad as <span style="-sec-ix-hidden:c106202142">one</span> segment due to the integrated nature of our rail network. Our operating revenues are primarily derived from contracts with customers for the transportation of freight from origin to destination. The following table represents a disaggregation of our freight and other revenues:</p> <p style="font-family: "arial", Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;"> </p> <table cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Arial, Helvetica, sans-serif; text-indent: 0px; margin-left: 0pt; margin-right: 0pt;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; width: 70%; border-bottom: 1px solid black; border-top: 1px solid black;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; margin: 0pt;"><i>Millions</i></p> </td><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black; width: 1%; border-top: 1px solid black;"> </td><td colspan="2" style="text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black; width: 1%; border-top: 1px solid black;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; text-align: right; margin: 0pt;"><b><i><em style="font: inherit;">2023</em></i></b></p> </td><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; padding-bottom: 1px; border-bottom: 1px solid black; width: 1%; border-top: 1px solid black;"> </td><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black; width: 1%; border-top: 1px solid black;"> </td><td colspan="2" style="text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black; width: 1%; border-top: 1px solid black;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; text-align: right; margin: 0pt;"><i><em style="font: inherit;">2022</em></i></p> </td><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; padding-bottom: 1px; border-bottom: 1px solid black; width: 1%; border-top: 1px solid black;"> </td><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black; width: 1%; border-top: 1px solid black;"> </td><td colspan="2" style="text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black; width: 1%; border-top: 1px solid black;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; text-align: right; margin: 0pt;"><i><em style="font: inherit;">2021</em></i></p> </td><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; padding-bottom: 1px; border-bottom: 1px solid black; width: 1%; border-top: 1px solid black;"> </td></tr> <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; width: 70%;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; margin: 0pt;">Bulk</p> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"><b>$</b></td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"><b>7,358</b></td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">7,537</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">6,656</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td></tr> <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; width: 70%;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; margin: 0pt;">Industrial</p> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"><b>8,238</b></td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">8,205</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">7,323</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td></tr> <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black; width: 70%;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; margin: 0pt;">Premium</p> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;"><b>6,975</b></td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;">7,417</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;">6,265</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt; border-bottom: 1px solid black;"> </td></tr> <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; width: 70%;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; margin: 0pt;">Total freight revenues</p> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"><b>$</b></td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"><b>22,571</b></td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">23,159</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">20,244</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td></tr> <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; width: 70%;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; margin: 0pt;">Other subsidiary revenues</p> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"><b>872</b></td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">884</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">741</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td></tr> <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; width: 70%;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; margin: 0pt;">Accessorial revenues</p> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"><b>584</b></td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">779</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;">752</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt;"> </td></tr> <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black; width: 70%;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; margin: 0pt;">Other</p> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;"><b>92</b></td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;">53</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;">67</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;"> </td></tr> <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; width: 70%; border-bottom: 1px solid black;"> <p style="font-family: Arial, Helvetica, sans-serif; font-size: 10pt; font-variant: normal; margin: 0pt;">Total operating revenues</p> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;"><b>$</b></td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;"><b>24,119</b></td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;">$</td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;">24,875</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; border-bottom: 1px solid black;"> </td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;">$</td><td style="width: 7%; text-align: right; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid black;">21,804</td><td style="width: 1%; font-family: Arial, Helvetica, sans-serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt; border-bottom: 1px solid black;"> </td></tr> </tbody></table> <p style="font-family: "arial", Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;"> </p> <p style="font-family: "arial", Times, serif; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">Although our revenues are principally derived from customers domiciled in the U.S., the ultimate points of origination or destination for some products we transport are outside the U.S. Each of our commodity groups includes revenues from shipments to and from Mexico. Included in the above table are freight revenues from our Mexico business which amounted to $2.8 billion in <em style="font: inherit;">2023</em>, $2.7 billion in <em style="font: inherit;">2022</em>, and $2.4 billion in <em style="font: inherit;">2021</em>.</p> <p style="font-family: "arial", Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;"> </p> <p style="font-family: "arial", Times, serif; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;"><b>Basis of Presentation</b> – The Consolidated Financial Statements are presented in accordance with accounting principles generally accepted in the U.S. (GAAP) as codified in the Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC). Certain prior period amounts have been reclassified to conform to the current period financial statement presentation.</p>
CY2023Q4	unp	Network Route Miles NetworkRouteMiles	32693	pure
CY2023Q4	unp	Route Miles Owned RouteMilesOwned	26110	pure
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	24119000000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	24875000000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	21804000000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1055000000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	973000000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	960000000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1074000000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	987000000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	983000000	usd
CY2023Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	149000000	usd
CY2022Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	194000000	usd
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<b>Use of Estimates </b>– The preparation of our Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect certain reported assets and liabilities, the disclosure of certain contingent assets and liabilities as of the date of the Consolidated Financial Statements, as well as the reported amounts of revenues and expenses during the reporting period. Actual future results <em style="font: inherit;"> may </em>differ from such estimates.
CY2023	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	16000000	usd
CY2022	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	14000000	usd
CY2021	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	15000000	usd
CY2023	us-gaap	Restricted Stock Expense RestrictedStockExpense	71000000	usd
CY2022	us-gaap	Restricted Stock Expense RestrictedStockExpense	68000000	usd
CY2021	us-gaap	Restricted Stock Expense RestrictedStockExpense	66000000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	107000000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	99000000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	88000000	usd
CY2023	unp	Excess Tax Benefit From Sharebased Compensation ExcessTaxBenefitFromSharebasedCompensation	11000000	usd
CY2022	unp	Excess Tax Benefit From Sharebased Compensation ExcessTaxBenefitFromSharebasedCompensation	21000000	usd
CY2021	unp	Excess Tax Benefit From Sharebased Compensation ExcessTaxBenefitFromSharebasedCompensation	26000000	usd
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	1974000
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	169.64
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	86000000	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	351000
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	202.81
CY2023	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	233000
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	118.29
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	20000
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	218.46
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2072000
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	180.56
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y10M24D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	135000000	usd
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	2053000
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	180.23
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	P5Y10M24D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	134000000	usd
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1423000
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	164.48
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y9M18D
CY2023Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	115000000	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	23000000	usd
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	53000000	usd
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	84000000	usd
CY2023	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	27000000	usd
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	27000000	usd
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	58000000	usd
CY2023	unp	Treasury Shares Repurchased For Employee Payroll Taxes TreasurySharesRepurchasedForEmployeePayrollTaxes	-5000000	usd
CY2022	unp	Treasury Shares Repurchased For Employee Payroll Taxes TreasurySharesRepurchasedForEmployeePayrollTaxes	-8000000	usd
CY2021	unp	Treasury Shares Repurchased For Employee Payroll Taxes TreasurySharesRepurchasedForEmployeePayrollTaxes	-15000000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	5000000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	8000000	usd
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	16000000	usd
CY2023	unp	Aggregate Grant Date Fair Value Of Stock Options Vested AggregateGrantDateFairValueOfStockOptionsVested	14000000	usd
CY2022	unp	Aggregate Grant Date Fair Value Of Stock Options Vested AggregateGrantDateFairValueOfStockOptionsVested	13000000	usd
CY2021	unp	Aggregate Grant Date Fair Value Of Stock Options Vested AggregateGrantDateFairValueOfStockOptionsVested	14000000	usd
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.40	pure
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Maximum Employee Subscription Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumEmployeeSubscriptionRate	0.05	pure
	unp	Espp Employee Contribution Annual Limit EsppEmployeeContributionAnnualLimit	15000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0521	pure
CY2023Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.05	pure
CY2021Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.028	pure
CY2022Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0521	pure
CY2023Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	643000000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	493000000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	159000000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-272000000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-813000000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	9000000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	86000000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	141000000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-150000000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	358000000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	954000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	404000000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	394000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	399000000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	382000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	0	usd
CY2022Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	0	usd
CY2023Q4	unp	Underfunded Accumulated Benefit Obligation UnderfundedAccumulatedBenefitObligation	399000000	usd
CY2022Q4	unp	Underfunded Accumulated Benefit Obligation UnderfundedAccumulatedBenefitObligation	382000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	3600000000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	3500000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.05	pure
CY2022Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0521	pure
CY2023Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.04	pure
CY2022Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.041	pure
CY2023	unp	Defined Benefit Plan Expected Return On Plan Assets Changes In Fair Value Period DefinedBenefitPlanExpectedReturnOnPlanAssetsChangesInFairValuePeriod	P5Y
CY2023	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	0	usd
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	9000000	usd
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	85000000	usd
CY2023	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate For Benefit Obligations DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateForBenefitObligations	0.0521	pure
CY2022	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate For Benefit Obligations DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateForBenefitObligations	0.028	pure
CY2021	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate For Benefit Obligations DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateForBenefitObligations	0.0242	pure
CY2023	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate For Interest On Benefit Obligations DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateForInterestOnBenefitObligations	0.0514	pure
CY2022	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate For Interest On Benefit Obligations DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateForInterestOnBenefitObligations	0.024	pure
CY2021	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate For Interest On Benefit Obligations DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateForInterestOnBenefitObligations	0.019	pure
CY2023	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Service Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostServiceCostDiscountRate	0.0519	pure
CY2022	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Service Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostServiceCostDiscountRate	0.0291	pure
CY2021	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Service Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostServiceCostDiscountRate	0.0261	pure
CY2023	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate For Interest On Service Cost DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateForInterestOnServiceCost	0.0521	pure
CY2022	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate For Interest On Service Cost DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateForInterestOnServiceCost	0.0286	pure
CY2021	unp	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate For Interest On Service Cost DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateForInterestOnServiceCost	0.0253	pure
CY2023	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0525	pure
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0625	pure
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0625	pure
CY2023	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.041	pure
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.041	pure
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.044	pure
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	230000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	229000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	229000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	230000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	231000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	1188000000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1	pure
CY2022Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1	pure
CY2023	unp	Weighted Average Maturity Of Pension Plan Debt Portfolio WeightedAverageMaturityOfPensionPlanDebtPortfolio	P22Y
CY2023Q4	unp	Pension Plan Master Trust Future Commitments For Additional Contributions Private Equity Partnerships PensionPlanMasterTrustFutureCommitmentsForAdditionalContributionsPrivateEquityPartnerships	80000000	usd
CY2022Q4	unp	Pension Plan Master Trust Future Commitments For Additional Contributions Private Equity Partnerships PensionPlanMasterTrustFutureCommitmentsForAdditionalContributionsPrivateEquityPartnerships	91000000	usd
CY2023Q4	unp	Pension Plan Master Trust Future Commitments For Additional Contributions Real Estate Partnerships And Funds PensionPlanMasterTrustFutureCommitmentsForAdditionalContributionsRealEstatePartnershipsAndFunds	5000000	usd
CY2022Q4	unp	Pension Plan Master Trust Future Commitments For Additional Contributions Real Estate Partnerships And Funds PensionPlanMasterTrustFutureCommitmentsForAdditionalContributionsRealEstatePartnershipsAndFunds	5000000	usd
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	27000000	usd
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	24000000	usd
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	21000000	usd
CY2023	unp	Railroad Retirement System Contributions RailroadRetirementSystemContributions	711000000	usd
CY2022	unp	Railroad Retirement System Contributions RailroadRetirementSystemContributions	586000000	usd
CY2021	unp	Railroad Retirement System Contributions RailroadRetirementSystemContributions	550000000	usd
CY2023	us-gaap	Profit Loss From Real Estate Operations ProfitLossFromRealEstateOperations	414000000	usd
CY2022	us-gaap	Profit Loss From Real Estate Operations ProfitLossFromRealEstateOperations	381000000	usd
CY2021	us-gaap	Profit Loss From Real Estate Operations ProfitLossFromRealEstateOperations	263000000	usd
CY2023	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-52000000	usd
CY2022	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-84000000	usd
CY2021	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-25000000	usd
CY2023	us-gaap	Investment Income Interest InvestmentIncomeInterest	52000000	usd
CY2022	us-gaap	Investment Income Interest InvestmentIncomeInterest	23000000	usd
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	4000000	usd
CY2023	unp	Environmental Nonoperating EnvironmentalNonoperating	-37000000	usd
CY2022	unp	Environmental Nonoperating EnvironmentalNonoperating	-47000000	usd
CY2021	unp	Environmental Nonoperating EnvironmentalNonoperating	-17000000	usd
CY2023	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
CY2022	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	36000000	usd
CY2023	unp	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	10000000	usd
CY2022	unp	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	-15000000	usd
CY2021	unp	Other Nonoperating Income Expense Other OtherNonoperatingIncomeExpenseOther	-14000000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	491000000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	426000000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	297000000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1417000000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1465000000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1446000000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	314000000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	340000000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	347000000	usd
CY2023	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	6000000	usd
CY2022	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	7000000	usd
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	8000000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1737000000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1812000000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1801000000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	219000000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	320000000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	199000000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-104000000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-59000000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-44000000	usd
CY2023	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	2000000	usd
CY2022	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1000000	usd
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1000000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	117000000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	262000000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	154000000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1854000000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2074000000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1955000000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.034	pure
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.036	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.037	pure
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.012	pure
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.01	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.006	pure
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.006	pure
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.005	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.005	pure
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.001	pure
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.002	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.003	pure
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0	pure
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.002	pure
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.225	pure
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.229	pure
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.231	pure
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	12987000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	12910000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	404000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	411000000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	556000000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	591000000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	13947000000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	13912000000	usd
CY2023Q4	unp	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	394000000	usd
CY2022Q4	unp	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	401000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	168000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	164000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	50000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	50000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	26000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	26000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	186000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	238000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	824000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	879000000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	13123000000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	13033000000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	34000000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	38000000	usd
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	74000000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	4000000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3000000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1000000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1000000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	4000000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	24000000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1000000	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3000000	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	3000000	usd
CY2023	unp	Unrecognized Tax Benefits Increase Decrease Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2022	unp	Unrecognized Tax Benefits Increase Decrease Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromSettlementsWithTaxingAuthorities	0	usd
CY2021	unp	Unrecognized Tax Benefits Increase Decrease Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromSettlementsWithTaxingAuthorities	-12000000	usd
CY2023	unp	Increases Decreases For Interest And Penalties IncreasesDecreasesForInterestAndPenalties	0	usd
CY2022	unp	Increases Decreases For Interest And Penalties IncreasesDecreasesForInterestAndPenalties	0	usd
CY2021	unp	Increases Decreases For Interest And Penalties IncreasesDecreasesForInterestAndPenalties	-3000000	usd
CY2023	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	usd
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	usd
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	30000000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	34000000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	38000000	usd
CY2023Q4	unp	Income Tax Examination Penalties And Interest Accrued Liabilities Receivables IncomeTaxExaminationPenaltiesAndInterestAccruedLiabilitiesReceivables	-4000000	usd
CY2022Q4	unp	Income Tax Examination Penalties And Interest Accrued Liabilities Receivables IncomeTaxExaminationPenaltiesAndInterestAccruedLiabilitiesReceivables	-3000000	usd
CY2023	unp	Income Tax Examination Penalties And Interest Expense Benefit IncomeTaxExaminationPenaltiesAndInterestExpenseBenefit	-1000000	usd
CY2022	unp	Income Tax Examination Penalties And Interest Expense Benefit IncomeTaxExaminationPenaltiesAndInterestExpenseBenefit	-2000000	usd
CY2021	unp	Income Tax Examination Penalties And Interest Expense Benefit IncomeTaxExaminationPenaltiesAndInterestExpenseBenefit	-5000000	usd
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CY2023	us-gaap	Proceeds From Issuance Of Commercial Paper ProceedsFromIssuanceOfCommercialPaper	1400000000	usd
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CY2023	us-gaap	Lease Cost LeaseCost	480000000	usd
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CY2023Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	55000000	usd
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CY2023Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	42000000	usd
CY2023Q4	unp	Lease Liability Payments Due Year Two LeaseLiabilityPaymentsDueYearTwo	417000000	usd
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Files In Submission

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$UNP
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2024 Q1 Form 10-K Financial Statement

#000143774924003599 Filed on February 09, 2024

Income Statement

Balance Sheet

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$UNP UNION PACIFIC CORP Stock $unp

2024 Q1 Form 10-K Financial Statement

#000143774924003599 Filed on February 09, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$UNP
UNION PACIFIC CORP Stock $unp