Document and Entity Information [Abstract] Statement [Table] Statement [Line Items] Document type Document period end date Amendment flag Entity registrant name Entity central index key Entity current reporting status Entity voluntary filers Current fiscal year end date Entity filer category Entity well known seasoned issuer Document fiscal year focus Document fiscal period focus Trading Symbol Entity common stock shares outstanding Condensed Consolidated Statements of Income [Abstract] Revenue [Abstract] Operating revenues: freight revenues Freight revenues Other sales revenue net Other revenues Revenues Total operating revenues Total operating revenues Operating expenses: Labor and related expense Compensation and benefits Materials and contracted services to maintain infrastructure and equipment and terminal services at intermodal and automotive facilities. Purchased Services And Material Purchased services and materials Depreciation Depreciation Fuel costs Fuel Rent paid for freight cars owned by other railroads or private companies, net of rents received, including lease expenses primarily for locomotives, railcars, containers and trailers, office and other rentals. Equipment and other rents Other cost and expense operating Other Total operating expenses Total operating expenses Operating income loss Operating income Other nonoperating income expense Other income (Note 6) Total Interest expense Interest expense Income (loss) from continuing operations before equity method investments, income taxes, extraordinary items, noncontrolling interest Income before income taxes Income tax expense (benefit) Income taxes Net income (loss) Net income Net income Net income Earnings Per Share [Abstract] Share and Per Share (Note 8): Earnings per share - basic Earnings per share - basic Earnings per share - diluted Earnings per share - diluted Weighted average number of shares - basic Basic Weighted average number of shares - diluted Diluted Common stock, dividends, per share, declared Cash dividends declared per share Dividends declared per share Condensed Consolidated Statements of Comprehensive Income [Abstract] Other comprehensive income/(loss): Defined benefit plans Defined benefit plans Other comprehensive income (loss) foreign currency transaction and transaction adjustment, net of tax Foreign currency translation Other comprehensive income (loss), net of tax Net to-date other comprehensive income/(loss), net of taxes Total other comprehensive income/(loss) Other comprehensive income/(loss) Comprehensive income (loss), net of tax,including portion attributable to noncontrolling interest Comprehensive income Consolidated Statements of Comprehensive Income (Parentheticals) [Abstract] Other Comprehensive Income (Loss), Tax Deferred taxes activity other comprehensive income/(loss) Consolidated Statements of Financial Position [Abstract] Assets Current assets: Cash and cash equivalents, at carry value Cash and cash equivalents at end of period Cash and cash equivalents at beginning of year Cash and cash equivalents Held-to-maturity Securities, Current Short-term investments (Note 13) Short-term investments Accounts Receivable, Net, Current Accounts receivable, net (Note 10) Materials, supplies, and other Materials and supplies Other Assets, current Other current assets Current assets Total current assets Investments in and advance to affiliates, subsidiaries, associates, and joint ventures Investments Property, plant, and equipment, net Net properties (Note 11) Net book value Other assets, noncurrent Other assets Total Assets Total assets Liabilities and Common Shareholders' Equity Current liabilities: Accounts payable and accured liabilities, current Accounts payable and other current liabilities (Note 12) Total accounts payable and other current liabilities Long-term debt and capital lease obligations, current Debt due within one year (Note 14) Liabilities, current Total current liabilities Long-term debt and capital lease obligations Debt due after one year (Note 14) Deferred tax liabilities, noncurrent Deferred income taxes Other liabilities, noncurrent Other long-term liabilities Commitments and contingencies Commitments and contingencies (Note 16) Liabilities Total liabilities Stockholders Equity [Abstract] Common shareholders' equity: Common stock, value, issued Common shares, $2.50 par value, 1,400,000,000 authorized; 1,111,425,213 and 1,110,986,415 issued; 801,484,015 and 815,824,413 outstanding, respectively Additional Paid In Capital Paid-in-surplus Retained earnings accumulated deficit Retained earnings Treasury stock, value Treasury stock Accumulated other comprehensive income (loss), net of tax Balance at June 30 Beginning balance Accumulated other comprehensive loss (Note 9) Stockholders' equity attributable to parent Total common shareholders' equity Liabilities and equity Total liabilities and common shareholders' equity Consolidated Statements of Financial Position (Parentheticals) [Abstract] Common shares, par or stated value per share Common shares, par value Common stock, shares authorized Common shares authorized Common stock, shares, issued Common shares issued Common stock, shares, outstanding Common shares, ending balance Common shares, beginning balance Common shares outstanding Condensed Consolidated Statements of Cash Flows [Abstract] Operating Activities Adjustments to reconcile net income to cash provided by operating activities: The component of income tax and unrecognized tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations. Deferred Income Taxes And Unrecognized Tax Benefits Deferred and other income taxes Other operating activities, net Other operating activities, net Increase decrease in operating capital abstract Changes in current assets and liabilities: Increase Decrease In Accounts Receivable Accounts receivable, net Increase decrease in material and supplies Materials and supplies Increase (Decrease) in Other Current Assets Other current assets Increase (decrease) in accounts payable and accrued liabilities Accounts payable and other current liabilities Increase (Decrease) in Accrued Taxes Payable Income and other taxes Net cash provided by (used in) operating activities, continuing operations Cash provided by operating activities Net cash provided by (used in) investing activities, continuing operations [Abstract] Investing Activities Capital investments Capital investments Puchase to Acquire Short-term Investments Purchases of short-term investments (Note 13) Maturities of short-term investments (Note 13) Proceeds from sale of property, plant, and equipment Proceeds from asset sales Payments for (proceeds from) other investing activities Other investing activities, net Net cash provided by (used in) investing activities, continuing operations Cash used in investing activities Net cash provided by (used in) financing activities, continuing operations [Abstract] Financing Activities Payments for Repurchase of Common Stock Common share repurchases (Note 17) Proceeds from issuance of other long-term debt Debt issued (Note 14) Payments of dividends Dividends paid Repayments of debt and capital lease obligations Debt repaid Proceeds from (payments for) other financing activites Other financing activities, net Net cash provided by (used in) financing activities, continuing operations Cash used in financing activities Cash and cash equivalents, period incrase (decrease) Net change in cash and cash equivalents Cash flow, noncash investing and financing activities disclosure [Abstract] Non-cash investing and financing activities: Capital expenditures incurred but not yet paid Capital investments accrued but not yet paid Reacquired common stock during the period but not yet paid Common shares repurchased but not yet paid Supplemental Cash Flow Information [Abstract] Cash (paid for)/received from: Income Taxes Paid Net Income taxes, net of refunds Interest paid, net Interest, net of amounts capitalized Statement of Stockholders' Equity [Abstract] Statement of Changes in common shareholders' equity components [Axis] Equity Component [Domain] Equity Components [Domain] Common Stock [Member] Common Shares [Member] Additional Paid In Capital [Member] Paid-in-Surplus [Member] Retained Earnings [Member] Retained Earnings [Member] Treasury Stock [Member] Treasury Stock [Member] Accumulated Other Comprehensive Income [Member] AOCI [Member] Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Shareholders' equity, ending balance Shareholders' equity, beginning balance Stock issued during period, value, shared-base compensation, net of forfeitures Conversion, stock option exercises, forfeitures, and other Stocks issued during period, shares, shared-based compensation, net of forfeitures Conversion, stock option exercises, forfeitures, and other (shares) Treasury stock, value, acquired, cost method Share repurchases (Note 17) Aggregate cost Treasury stock, shares, acquired Share repurchases (Note 17) (shares) Shares repurchased Dividends, cash Cash dividends declared Basis of Presentation [Abstract] Basis of Accounting [Text Block] Basis of Presentation Accounting Pronouncements [Abstract] Description Of New Accounting Pronouncements [Text Block] Accounting Pronouncements Operations and Segmentation [Abstract] Nature Of Operations [Text Block] Operations and Segmentation Stock-based compensation [Abstract] Disclosure of compensation related costs, shared-base payments [Text Block] Stock-based Compensation Retirement Plans [Abstract] Retirement Plans Other Income [Abstract] Other Income Income Tax [Abstract] Income Taxes Earnings Per Share Accumulated Other Comprehensive Income/(Loss) [Abstract] The entire disclosure for accumulated other comprehensive income. Accumulated Other Comprehensive Income (Loss) [Text Block] Accumulated Other Comprehensive Income/(Loss) Accounts Receivable [Abstract] Accounts Receivable Properties [Abstract] Properties Accounts Payable and Other Current Liabilties [Abstract] Accounts Payable and Other Current Liabilities Financial Instruments[Abstract] Financial Instruments Debt [Abstract] Debt Variable Interest Entities [Abstract] Disclosures of variable interest entities (VIE) in aggregate, including how similar entities are aggregated, if separate reporting would not provide more useful information, distinguished between (1) VIEs that are not consolidated because the enterprise is not the primary beneficiary but has a significant variable interest or is the sponsor that holds a variable interest, and (2) VIEs that are consolidated. Presented in a manner that clearly and fully explains to financial statement users the nature and extent of an enterprise's involvement with variable interest entities. Aggregation Of Variable Interest Entity Disclosure [Text Block] Variable Interest Entities Commitments And Contingencies [Abstract] Commitments Contingencies and Guarantees [Text Block] Commitments and Contingencies Share Repurchase Program [Abstract] Share Repurchase Program [Text Block] Share Repurchase Program Related Parties [Abstract] Related Parties This element is used to capture the breakout of our one segment into our six commodity groups. Schedule Of Freight Revenue [Table Text Block] Freight Revenue By Commodity Group Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Stock-Based Compensation Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Stock Options Weight Average Assumptions Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Stock Options Activity Schedule of Cash Proceeds Received from Share-based Payment Awards [Table Text Block] Stock Option Exercises Changes In Retention Awards [Table Text Block] Retention Awards Activity Tabular Disclosure of the Significant Assumptions Used to Estimate Present Value of Estimated Future Dividends Related to Performance Retention Awards. Performance Retention Awards Present Value Calculation Assumptions [Table Text Block] Performance Retention Awards Present Value Calculation Assumptions Schedule of Nonvested Performance-based Units Activity [Table Text Block] Performance Based Units Activity Net Periodic Pension And Opeb Cost Benefit [Text Block] Net Periodic Pension And OPEB Cost/(Benefit) Schedule of Other Nonoperating Income, by Component [Table Text Block] Other Income Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Earnings Per Share After Tax Components Of Accumulated Other Comprehensive Income Loss [Text Block] After-Tax Components Of Accumulated Other Comprehensive Loss Schedule Of Properties Schedule of Accounts Payable and Accrued Liabilities Unsecured, fixed-rate debt securities issued under the current shelf registration in the current year. Unsecured Fixed Rate Debt Securities Issued Under Current Shelf Registration [Table Text Block] Unsecured Fixed Rate Debt Securities Issued Under Current Shelf Registration Commitments And Contingencies Activity [Table Text Block] Commitments And Contingencies Activity This element is used to disclose the repurchases of common stock through the company's repurchase program. Share Repurchase Program Schedule of Segment Reporting Information, by Segment [Table] Statement, Business Segments [Axis] Segment [Domain] Segment [Domain] Agriculture [Member] Agricultural Products [Member] Automotive [Member] Automotive [Member] Chemicals [Member] Chemicals [Member] Coal [Member] Coal [Member] Industrial Products [Member] Industrial Products [Member] Intermodal [Member] Intermodal [Member] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Commodity Group Information [Line Items] Schedule of share-based compensation arrangements by share-based payment award [Table] Schedule of Share-Based Compensation Arrangments [Table] Schedule of Share-based Compensation Arrangements [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Contractual term Operating income growth modifer range for performance retention awards effective for units granted in 2016 and future years. Operating Income Growth Modifier Range Operating income growth modifier range Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Requisite service period Share-based compensation arrangement by share-based payment award, terms of award Contractual terms of award Years until vest Performance period in which ROIC is evaluated in determining equity-based compensation awards received. ROIC Performance Period ROIC performance period The number of stock options outstanding that are subject to performance or market-based vesting conditions before giving the employee the legal right to convert the award to shares. Share Based Compensation Arrangement By Share Based Payment Award Conditions Stock options, subject to performance or market-based vesting conditions Employee service share-based compensation, nonvested awards, compensation cost not yet recognized Unrecognized compensation expense Employee service share-based compensation nonvested awards, compensation cost not yet recognized, period for recognition Expected weighted average period (in years) of nonvested stock options to be recognized Stock-Based Compensation, Before Tax: [Abstract] Stock-Based Compensation, Before Tax: [Abstract] Stock or unit option plan expense Stock options Restricted stock or unit expense Retention awards Stock-based compensation expense Total stock-based compensation, before tax Excess tax benefit from share-based compensation, operating activites Excess tax benefits from equity compensation plans Schedule of Share-Based Compensation Arrangments [Axis] Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Schedule of Share-based Compensation Arrangements [Domain] Stock Option [Member] Stock Options [Member] Pertinent data describing and reflecting required disclosures pertaining to performance retention awards. Performance Retention Awards [Member] Performance Retention Awards [Member] Assumptions For Stock Awards [Abstract] The estimated amount of dividends per share to be paid to holders of the underlying shares (expected dividends) over the option's term. Dividends are taken into account because payment of dividends to shareholders reduces the fair value of the underlying shares, and option holders generally do not receive dividends. Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Per Share Dividend per share per quarter Share-based compensation arrangement by share-based payment by risk free interest rate Risk-free interest rate at date of grant Share-based compensation arrangement by expected dividend rate Dividend yield Shared base compensation arrangement by expected term Expected life (years) Share-based compensation arrangement by volatility rate Volatility Weighted-average grant-date fair value of options granted Pertinent data describing and reflecting required disclosures pertaining to retention awards. Retention Awards [Member] Retention Awards [Member] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Stock Option Activity [Abstract] Stock options, shares outstanding Stock options, shares outstanding at June 30, 2017 Stock options, shares outstanding at January 1, 2017 Share-based compensation arrangement by grants in period Stock options, shares granted Stock options, shares exercised Stock options, shares exercised Stock options, shares forfeited or expired Stock options, shares forfeited or expired Stock options, shares vested or expected to vest at June 30, 2017 Stock options, shares exercisable at June 30, 2017 Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Stock options weighted-average exercise price, outstanding at June 30, 2017 Stock options weighted-average exercise price, outstanding at January 1, 2017 Stock options weighted-average exercise price, granted Stock options weighted-average exercise price, exercised Stock options weighted-average exercise price, forfeited or expired Stock options weighted-average exercise price, vested or expected to vest at June 30, 2017 Stock options weighted-average exercise price, options exercisable at June 30, 2017 Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Remaining Contractual Term Stock options weighted-average remaining contractual term in years, outstanding at June 30, 2017 Stock options weighted-average remaining contractual term in years, outstanding at January 1, 2017 Stock options weighted-average remaining contractual term in years, vested or expected to vest at June 30, 2017 Stock options weighted-average remaining contractual term in years, options exercisable at June 30, 2017 Stock options aggregate intrinsic value Stock options aggregate intrinsic value, outstanding at June 30, 2017 Stock options aggregate intrinsic value, outstanding at January 1, 2017 Stock options aggregate intrinsic value, vested or expected to vest at June 30, 2017 Stock options aggregate intrinsic value, options exercisable at June 30, 2017 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] Awards Activity [Abstract] Awards, shares nonvested outstanding Awards, shares nonvested at June 30, 2017 Awards, shares nonvested at January 1, 2017 Awards, shares granted Awards, shares vested Awards, shares vested The number of equity-based payment instruments, excluding stock (or unit) options, that were unearned during the reporting period. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Unearned Awards, shares unearned Awards, shares forfeited Awards, shares forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Awards weighted-average grant-date fair value, nonvested at June 30, 2017 Awards weighted-average grant-date fair value, nonvested at January 1, 2017 Awards weighted-average grant-date fair value, granted Awards weighted-average grant-date fair value, vested Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were unearned. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Unearned Weighted Average Grant Date Fair Value Awards weighted-average grant-date fair value, unearned Awards weighted-average grant-date fair value, forfeited Stock Option Aggregate Disclosures [Abstract] Intrinsic value of stock options exercised Cash received from option exercises Value of treasury shares repurchased during period for employee payroll taxes related to share-based compensation awards. Treasury shares repurchased for employee payroll taxes Treasury shares repurchased for employee payroll taxes Tax benefit realized from option exercises Aggregate grant-date fair value of stock options vested. Aggregate Grant Date Fair Value Of Stock Options Vested Aggregate grant-date fair value of stock options vested Retirement Plans Details [Abstract] Retirement Plans [Table] Retirement Plan Type [Axis] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Pension Plans Defined Benefit [Member] Pension [Member] Other Postretirement Benefit Plans Defined Benefit [Member] OPEB [Member] Net Periodic Pension And OPEB Cost [Line Items] Net Periodic Pension And OPEB Cost [Abstract] The expected long-term rate of return on plan assets that is applied to a calculated value of plan assets that recognizes the changes in fair value over this period. Defined Benefit Plan, Expected Return on Plan Assets, Changes In Fair Value, Period Changes in fair value Service cost Interest cost Expected return on plan assets Expected return on plan assets Amortization of prior service credit Amortization of actuarial loss Amortization of actuarial loss Net periodic benefit cost / (benefit) Net periodic cost Pension Contributions Voluntary cash contributions to qualified pension plan Rental income Gain (Loss) on Disposition of Assets Net gain on non-operating asset dispositions. Interest Income The net amount of other income and expense amounts, the components of which are not separately disclosed, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Major component is expenses associated with environmental cost on nonoperating property. Nonoperating Environmental Costs And Other Non-operating environmental costs and other Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Real estate sale Components Of Income Tax Expense [Abstract] Income Taxes [Table] Income Taxes [Table] Income Taxes [Line Items] Income Taxes [Line Items] Unrecognized Tax Benefits [Abstract] Liability for unrecognized tax benefits Net unrecognized tax benefit liability Increase in Deferred Tax Expense [Abstract] Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability Increase in deferred tax expense for increased tax rate Earnings Per Share Details [Abstract] Weighted-Average Number Of Shares Outstanding Aggregate awards of share options issued to an employee under a share-based compensation arrangement are considered options for purposes of computing diluted earnings per share. Such share-based awards shall be considered to be outstanding as of the grant date for purposes of computing diluted earnings per share even though their exercise may be contingent upon vesting. Those share-based awards are included in the diluted Earnings Per Share (EPS) computation even if the employee may not receive (or be able to sell) the stock until some future date. Accordingly, all shares to be issued shall be included in computing diluted EPS if the effect is dilutive. The dilutive effect of share-based compensation arrangements shall be computed using the treasury stock method. If the equity share options or other equity instruments are outstanding for only part of a period, the shares issuable shall be weighted to reflect the portion of the period during which the equity instruments were outstanding. Weighted Average Number Of Shares Outstanding Dilutive Effect Of Stock Options Dilutive effect of stock options Aggregate awards of retention and performance retention shares issued to an employee under a share-based compensation arrangement are considered options for purposes of computing diluted earnings per share. Such share-based awards shall be considered to be outstanding as of the grant date for purposes of computing diluted earnings per share even though their exercise may be contingent upon vesting. Those share-based awards are included in the diluted Earnings Per Share (EPS) computation even if the employee may not receive (or be able to sell) the stock until some future date. Accordingly, all shares to be issued shall be included in computing diluted EPS if the effect is dilutive. The dilutive effect of share-based compensation arrangements shall be computed using the treasury stock method. If the equity share options or other equity instruments are outstanding for only part of a period, the shares issuable shall be weighted to reflect the portion of the period during which the equity instruments were outstanding. Weighted Average Number Of Shares Outstanding Dilutive Effect Of Retention Shares And Units Dilutive effect of retention shares and units Stock options excluded as their inclusion would be anti-dilutive Accumulated Other Comprehensive Income/ (Loss) [Table] Accumulated Other Comprehensive Income Loss [Line Items] Other Comprehensive Income Loss Before Reclassifications Net Of Tax Other comprehensive income/(loss) before reclassifications Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax Amounts reclassified from accumulated other comprehensive income/(loss) Accounts Receivable Details [Abstract] Allowance for doubtful accounts Allowance for doubtful accounts - receivables not expected to be collected in one year Receivables Securitization Facility [Abstract] Total capacity to transfer undivided interest to investors under receivables securitization facility. Total Transfer Capacity Undivided Interests To Investors Under Receivables Securitization Facility Total capacity to transfer undivided interests to investors under the receivables securitization facility Maturity date the receivables securitization facility, in Year Month format. Receivables securitization facility maturity date Duration of the receivables securitization facility,in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Receivables securitization facility duration Value of the outstanding undivided interest held by investors under the receivables securitization facility. Value Outstanding Undivided Interest Held By Investors Under Receivables Securitization Facility Value of the outstanding undivided interest held by investors under the receivables securitization facility The value of the accounts receivable that supported the value of the undivided interest held by investors. Accounts Receivable Supporting Undivided Investor Held Interest Accounts receivable supporting the undivided interest held by investors Interest expense associated with maintaining the receivables securitization facility. Receivables Securitization Facility Interest Expense Cost Cost of the receivables securitization facility - interest expense Properties Details [Abstract] Properties [Table] Property, Plant and Equipment by Type [Axis] Property Plant And Equipment Type [Domain] Property, Plant and Equipment, Type [Domain] Land [Member] Land [Member] The cost of rails and other track material used in the construction of tracks for the movement or storage of locomotives and cars (including tracks in shops, fuel stations, supply yard areas, etc.); the cost of welding two or more lengths or rail into continuous lengths for use in construction of tracks; and the cost of labor associated with unloading and installation of the rail and other track material. Roadrail And Other Track Material Member [Member] Road: Rail and Other Track Material [Member] The cost of cross, switch, bridge and other track ties used in the construction of tracks for the movement or storage of locomotives and cars (including tracks in shops, fuel stations, supply yard areas, etc.), and the cost of additional ties subsequently laid in such tracks. It also includes the cost of labor for unloading, distributing and placing ties in tracks. Road Ties [Member] Road: Ties [Member] The cost of gravel, stone, slag, cinders, sand, and like material used in ballasting tracks (including tracks in shops, fuel stations, and supply yard areas, etc.), including cost of worktrain service and the cost of labor expended in placing ballast in tracks. Road Ballast [Member] Road: Ballast [Member] The cost of all other road property owned by the carrier and devoted to transportation service other than rail and other track material, ties, and ballast. Road Other [Member] Road: Other Roadway [Member] Road [Member] Road [Member] Total Road [Member] The cost of locomotives purchased or built by the carrier, and of appurtenances, furniture, and fixtures necessary to equip them for service, including the cost of inspection, setting up, and trying out after receipt from builders, and transportation charges to the carrier's line. Equipment Locomotives [Member] Equipment: Locomotives [Member] The cost of freight-train cars of all classes purchased or built by the carrier, including all appurtenances, furniture, and fixtures necessary to equip them for service, and the cost of inspection and transportation charges to the carrier's line. Equipment Freight Cars [Member] Equipment: Freight Cars [Member] The cost of work equipment, including motor-driven equipment, purchased or built by the carrier; cost of highway vehicles used in revenue transportation service, including pickup and delivery service, substitute line-haul service, and TOFC/COFC service; and the cost of automobiles, trucks and other highway equipment not used in revenue transportation service and not provided for elsewhere; the cost of airplanes; cost of appurtenances, furniture, and fixtures necessary to equip it for service; and cost of inspection and transportation charges to the carrier's line. Equipment Work Equipment And Other [Member] Equipment: Work Equipment and Other [Member] Technology Equipment [Member] Technology and Other [Member] Construction In Progress [Member] Construction in Progress [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Gross Cost Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated depreciation Property Plant And Equipment Useful Life Estimated useful life Accounts Payable and Other Current Liabilities Details [Abstract] Accounts payable Income and other taxes payable Accrued wages and vacation Interest Payable, Current Interest payable Loss contingency accrual carrying value current Current portion, ending balance at June 30 Accrued casualty costs Costs accrued as of the balance sheet date for liabilities incurred (and for which invoices have typically been received) and payable to vendors for rent for freight cars owned by other railroads or private companies including lease expenses primarily for railcars, containers and trailers. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Equipment rents payable Other current liabilities Other Fair Value, by Balance Sheet Grouping [Table] Financial Instruments [Table] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Financial Instruments [Line Items] Investments, Fair Value Disclosure [Abstract] Short-Term Investments [Abstract] Fair Value, Assets, Level 2 to Level 1 Transfers, Amount Transfers out of level 2 Fair Value of Debt Instruments [Abstract] Fair value of total debt Fair value of total debt in excess of carrying value. Fair value of total debt in excess of carrying value Amount of debt securities that contain a provision to retire the debt instrument prior to final maturity, with the payment of fixed call premiums, or in certain cases, at par. Fixed rate debt securities containing call provisions Debt Instrument [Table] Schedule Of Long-term Debt [Axis] Longterm Debt Type [Domain] Long-term Debt [Domain] Unsecured Debt [Member] Unsecured Debt [Member] Debt Instrument [Line Items] Revolving credit facility available credit Facility expiration date Debt Instrument, Term Credit facility term Revolving credit facility withdrawals Total amount of debt (as defined in the facility) the debt-to-net-worth coverage ratio allowable under the revolving credit facility. Allowable Debt Per Debt To Net Worth Coverage Ratio As Defined Facility Allowable debt per debt-to-net-worth coverage ratio (as defined in the facility) Outstanding debt as defined by the credit facility. Outstanding debt (as defined by facility) Cross-default provision, as defined by facility. Cross default provision as defined by facility Cross-default provision (as defined by facility) Commercial paper issued Commercial paper repaid Commercial paper outstanding Amount of debt issuance authorized by Board of Directors. Board of Directors authorized debt issuance Amount of debt issuance remaining under current authority by Board of Directors. Board Of Directors Remaining Debt Issuance Board of Directors remaining debt issuance Issuance date Note amount Interest rate on note Maturity date on new borrowing Value of the outstanding undivided interest held by investors. Secured debt under receivables securitization facility Debt Instrument [Axis] Debt Instrument Name [Domain] Debt Instrument Name [Domain] Notes issued that are due in 2027 for 3.000%. Notes Due20273000 Percent [Member] 3.000% Notes Due 2027 [Member] Notes issued that are due in 2047 for 4.000%. Notes Due20474000 Percent [Member] 4.000% Notes Due 2047 [Member] Variable Interest Entities Details [Abstract] Operating Leases Future Minimum Payments Due Future minimum lease payments Commitments and Contingencies [Table] Commitments and Contingencies [Axis] Loss Contingency Nature [Domain] Commitments and Contingencies [Domain] Individual claims alleging that the company was responsible for the individual's injury that requires reserves to be provided for related medical claims and punitive damages. Personal Injury [Member] Personal Injury [Member] Asbestos Issue [Member] Asbestos [Member] Guarantee Obligations [Member] Guarantees [Member] Commitments and Contingencies [Line Items] Percentage of the recorded liability related to asserted claims. Recorded Liability Related To Asserted Claims Percent of liability recorded related to asserted claims Percentage of the recorded liability related to unasserted claims. Recorded Liability Related To Unasserted Claims Percent of liability recorded related to unasserted claims Reasonably possible outcome of related claims Sites identified at which Railroad is or may be liable for remediation costs associated with alleged contamination or for violations of environmental requirements. Sites Identified Sites identified which we are or may be liable for remediation costs Sites subject of actions taken by the U.S. government. Sites Subject Of Actions Taken By Us Government Sites subject of actions taken by the U.S. government Sites on the Superfund National Priorities List. Sites On Superfund National Priorities List Sites on the Superfund National Priorities List Maximum potential amount of guarantee payments Recorded liability for fair value of guarantees Expiration year of final guarantee The approximate gain amount per diluted share that will be realized upon the resolution of a contingency. Gain contingency unrecorded amount per diluted share Liability Activity [Abstract] Commitments and contingencies, carry value Ending balance at June 30 Beginning balance Accruals/(credits) Current year accruals The charge against earnings in the period to change the loss contingency reserves for change in estimates from prior years. Loss Contingency Accrual Carrying Value Change In Prior Years Changes in estimates for prior years Payments Payments Environmental [Abstract] Accrual For Environmental Loss Contingencies Ending balance at June 30. Beginning balance. Accrual For Environmental Loss Contingencies Provision For New Losses Accruals Accrual For Environmental Loss Contingencies Payments Payments Accrued Environmental Loss Contingencies Current Current portion, ending balance at June 30. Class of Treasury Stock [Table] Shares Repurchased [Line Items] Treasury Stock Acquired Repurchase Board Authorization BOD authorized Stock repurchase program expiration date Average purchase price Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased Remaining number of shares that may be repurchased under current authority Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Line Items] Equity Method Investment, Ownership Percentage Equity Method Investments Related Party Transaction, Expenses from Transactions with Related Party Accounts Payable, Related Parties, Current Geographical [Axis] Segment Geographical [Domain] Geographical [Domain] M [X] Mexico [Member] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Accumulated Defined Benefit Plans Adjustment Including Portion Attributable To Noncontrolling Interest [Member] Defined Benefit Plans [Member] Accumulated Foreign Currency Adjustment Including Portion Attributable To Noncontrolling Interest [Member] Foreign Currency Translation [Member] Equipment [Member] Total Equipment [Member] Investment Type [Axis] Investment Type Categorization [Member] Investments [Domain] Bank Time Deposits [Member] Time Deposits [Member] Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Inputs Level2 [Member] Significant Other Observable Inputs (Level 2) [Member] Line Of Credit [Member] Revolving Credit Facility [Member] Legal Entity [Axis] Entity [Domain] Entity [Domain] Variable Interest Entity Primary Beneficiary [Member] Variable Interest Entity (VIEs) [Member] Range [Axis] Range [Member] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Investment, Name [Axis] Equity Method Investee Name [Domain] Investment, Name [Domain] TTX Company investment Ttx Company [Member] TTX Company [Member]