Operating Leases, Future Minimum Payments Due, Rolling Maturity [Abstract]
New Accounting Pronouncements or Change in Accounting Principle [Table]
New Accounting Pronouncements or Change in Accounting Principle [Table]
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
Income Statement Location [Domain]
Adjustments for New Accounting Pronouncements [Axis]
Adjustments for New Accounting Pronouncements [Axis]
Type of Adoption [Domain]
Type of Adoption [Domain]
Adjustments for New Accounting Pronouncement [Member]
Adjustments for New Accounting Pronouncement [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description
New Accounting Pronouncement or Change in Accounting Principle, Description
Future minimum lease payments
Operating Leases, Future Minimum Payments Due
Commitments and Contingencies Disclosure [Abstract]
Insurance [Table]
Insurance [Table]
Insurance [Table]
Consolidated Entities [Axis]
Consolidated Entities [Axis]
Consolidated Entities [Domain]
Consolidated Entities [Domain]
BNSF Insurance Company [Member]
BNSF Insurance Company [Member]
BNSF Insurance Company [Member]
Cash and Cash Equivalents [Axis]
Cash and Cash Equivalents [Axis]
Cash and Cash Equivalents [Domain]
Cash and Cash Equivalents [Domain]
Commercial Paper, Bank Time Deposits, and Money Market Funds [Member]
Commercial Paper, Bank Time Deposits, and Money Market Funds [Member]
Commercial Paper, Bank Time Deposits, and Money Market Funds [Member]
Insurance [Line Items]
Insurance [Line Items]
Insurance [Line Items]
Third party investments, classified as cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Variable Interest Entities
Schedule of Variable Interest Entities [Table Text Block]
Receivables [Abstract]
Accounts Receivable, Net
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Table]
Property, Plant and Equipment [Table]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Type [Domain]
Right to use fixed assets [Member]
Right to use fixed assets [Member]
Right to use fixed assets [Member]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Right to use fixed assets
Right to use fixed assets
Right to use fixed assets
Accumulated amortization on right-to-use fixed assets
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Income Statement [Abstract]
Statement [Table]
Statement [Table]
Scenario [Axis]
Scenario [Axis]
Scenario, Unspecified [Domain]
Scenario, Unspecified [Domain]
Statement [Line Items]
Statement [Line Items]
Revenues
Revenues
Operating expenses:
Operating Expenses [Abstract]
Compensation and benefits
Labor and Related Expense
Purchased services
Purchased services
The amount of expense for contract services provided to the Company.
Fuel
Fuel Costs
Depreciation and amortization
Depreciation, Depletion and Amortization
Equipment rents
Equipment rents
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.
Materials and other
Other Cost and Expense, Operating
Total operating expenses
Operating Expenses
Operating income
Operating Income (Loss)
Interest expense
Interest and Debt Expense
Other (income) expense, net
Other Nonoperating Income (Expense)
Income tax expense
Income Tax Expense (Benefit)
Net income
Net Income (Loss) Attributable to Parent
Disaggregation of Revenue [Abstract]
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Table]
Segments [Axis]
Segments [Axis]
Segments [Domain]
Segments [Domain]
Consumer Products [Member]
Consumer Products [Member]
Consumer Products commodity group portion of total freight revenues.
Industrial Products [Member]
Industrial Products [Member]
Industrial Products commodity group portion of total freight revenues.
Agricultural Products [Member]
Agricultural Products [Member]
Agricultural Products commodity group portion of total freight revenues.
Coal [Member]
Coal [Member]
Non-rail logistics subsidiary [Domain]
non-rail logistics subsidiary [Domain]
non-rail logistics subsidiary [Domain]
Accessorial and other [Domain]
Accessorial and other [Domain]
Accessorial and other [Member]
Product and Service [Axis]
Product and Service [Axis]
Product and Service [Domain]
Product and Service [Domain]
Geographical [Axis]
Geographical [Axis]
Geographical [Domain]
Geographical [Domain]
Contract with Customer, Basis of Pricing [Axis]
Contract with Customer, Basis of Pricing [Axis]
Contract with Customer, Basis of Pricing [Domain]
Contract with Customer, Basis of Pricing [Domain]
Contract with Customer, Duration [Axis]
Contract with Customer, Duration [Axis]
Contract with Customer, Duration [Domain]
Contract with Customer, Duration [Domain]
Timing of Transfer of Good or Service [Axis]
Timing of Transfer of Good or Service [Axis]
Timing of Transfer of Good or Service [Domain]
Timing of Transfer of Good or Service [Domain]
Contract with Customer, Sales Channel [Axis]
Contract with Customer, Sales Channel [Axis]
Contract with Customer, Sales Channel [Domain]
Contract with Customer, Sales Channel [Domain]
Customer [Axis]
Customer [Axis]
Customer [Domain]
Customer [Domain]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax
Revenue from Contract with Customer, Excluding Assessed Tax
Cargo and Freight Revenue
Total Freight Revenues
Total Freight Revenues
Total other revenues
Total other revenues
Total other revenues
Loss Contingencies [Table]
Loss Contingencies [Table]
Annual actuary study [Axis]
Annual actuary study [Axis]
Annual actuary study [Axis]
Annual actuary study [Domain]
Annual actuary study [Domain]
[Domain] for annual actuary study [Axis]
Environmental Issue [Member]
Environmental Issue [Member]
Loss Contingency Nature [Axis]
Loss Contingency Nature [Axis]
Loss Contingency, Nature [Domain]
Loss Contingency, Nature [Domain]
Minimum [Member]
Minimum [Member]
Maximum [Member]
Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Number of alleged environmental contamination sites (in sites)
Administrative Judicial and Other Mandatory Cleanup Efforts Total Sites
Administrative, Judicial and Other Mandatory Cleanup Efforts, Total Sites
Number of environmental superfund sites (in sites)
Administrative Judicial and Other Mandatory Cleanup Efforts Superfund Sites
Administrative, Judicial and Other Mandatory Cleanup Efforts, Superfund Sites
Recorded Liability For Third Party Environmental Tort Claims
Recorded Liability For Third Party Environmental Tort Claims
Recorded Liability For Third Party Environmental Tort Claims
Accrued obligations for environmental matters, current liabilities
Accrued Environmental Loss Contingencies, Current
Accrual for Environmental Loss Contingencies, Revision in Estimates
Accrual for Environmental Loss Contingencies, Revision in Estimates
Years in which accrued environmental costs will be paid over
Site Contingency, Estimated Time Frame for Accrued Cost Distributions
Site Contingency, Estimated Time Frame for Accrued Cost Distributions
Future costs to settle claims and associated liability
Loss Contingency, Estimate of Possible Loss
Accrual for Environmental Loss Contingencies [Roll Forward]
Accrual for Environmental Loss Contingencies [Roll Forward]
Beginning balance
Accrual for Environmental Loss Contingencies
Accruals / changes in estimates
Accrual for Environmental Loss Contingencies, Provision and Changes in Estimates
Amount of expense for newly incurred environmental loss contingencies and revisions to previously reported estimates
Payments
Accrual for Environmental Loss Contingencies, Payments
Ending balance
Loss Contingency, Accrual, Current
Loss Contingency, Accrual, Current
Statement of Financial Position [Abstract]
ASSETS
Assets [Abstract]
Accumulated depreciation
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Burlington Northern Santa Fe Corporation [Member]
Northern Sante Fe Corporation [Member]
Northern Sante Fe Corporation [Member]
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Acquired remaining outstanding shares, percentage
Business Combination, Step Acquisition, Remaining Equity Interest Acquired, Percentage
In a business combination achieved in stages, this element represents the percentage aquired of the remaining equity interest in the acquiree not already owned.
Holders of membership interests
Holders of Membership Interests
Holders of Membership Interests
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
Schedule of Finite-Lived Intangible Assets and Liabilities
Schedule of Finite-Lived Intangible Assets and Liabilities [Table Text Block]
Schedule of Finite-Lived Intangible Assets and Liabilities [Table Text Block]
Schedule of Finite-Lived Intangible Assets and Liabilities Amortization Expense
Schedule of Finite-Lived Intangible Assets and Liabilities Amortization Expense [Table Text Block]
Schedule of Finite-Lived Intangible Assets and Liabilities Amortization Expense [Table Text Block]
Schedule of Finite-Lived Intangible Assets and Liabilities, Future Amortization Expense
Schedule of Finite-Lived Intangible Assets and Liabilities, Future Amortization Expense [Table Text Block]
Schedule of Finite-Lived Intangible Assets and Liabilities, Future Amortization Expense [Table Text Block]
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Schedule of Error Corrections and Prior Period Adjustment Restatement [Table]
Schedule of Error Corrections and Prior Period Adjustment Restatement [Table]
Restatement [Axis]
Restatement [Axis]
Restatement [Domain]
Restatement [Domain]
Previously Reported [Member]
Previously Reported [Member]
Restatement Adjustment [Member]
Restatement Adjustment [Member]
Operating Expenses
Operating Income
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plans Disclosures [Table]
Schedule of Defined Benefit Plans Disclosures [Table]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Retirement Plan Type [Axis]
Retirement Plan Type [Axis]
Retirement Plan Type [Domain]
Retirement Plan Type [Domain]
Pension Plan [Member]
Pension Plan [Member]
Retiree Health and Welfare Benefits [Member]
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Service cost
Defined Benefit Plan, Service Cost
Interest Cost
Defined Benefit Plan, Interest Cost
Amortization of Prior Service Credit
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Expected return on plan assets
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Net cost recognized
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Schedule of Reclassification out of Accumulated Other Comprehensive Income
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
Statement of Cash Flows [Abstract]
OPERATING ACTIVITIES
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income
Adjustments to reconcile net income to net cash provided by operating activities:
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Deferred income taxes
Deferred Income Tax Expense (Benefit)
Long-term casualty and environmental liabilities, net
Long term casualty and environmental liabilities, net
The net change during the reporting period in the amount of noncurrent costs accrued for casualty, environmental and other loss contingencies.
Other, net
Other Operating Activities, Cash Flow Statement
Changes in current assets and liabilities:
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable, net
Increase (Decrease) in Accounts Receivable
Materials and supplies
Increase (Decrease) in Materials and Supplies
Other current assets
Increase (Decrease) in Other Current Assets
Accounts payable and other current liabilities
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Net cash provided by operating activities
Net Cash Provided by (Used in) Operating Activities
INVESTING ACTIVITIES
Net Cash Provided by (Used in) Investing Activities [Abstract]
Capital expenditures excluding equipment
Capital Expenditures Excluding Equipment
The cash outflow associated with the acquisition of long-lived, physical assets, excluding equipment, that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.
Acquisition of equipment
Acquisition of equipment
The cash outflow associated with the acquisition of equipment which includes locomotive, freight cars and other equipment, some or all of which may be sold and leased back by the Company through either an operating or capital lease.
Purchases of investments and investments in time deposits
Payments to Acquire Investments
Proceeds from sales of investments and maturities of time deposits
Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment
Other, net
Payments for (Proceeds from) Other Investing Activities
Net cash used for investing activities
Net Cash Provided by (Used in) Investing Activities
FINANCING ACTIVITIES
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from issuance of long-term debt
Proceeds from Issuance of Long-term Debt
Payments on long-term debt
Repayments of Long-term Debt
Cash distributions
Cash Distributions/ Dividends Paid
The cash outflow from the distribution of an entity's earnings in the form of dividends to common shareholders or distributions to the parent company.
Other, net
Proceeds from (Payments for) Other Financing Activities
Net cash used for financing activities
Net Cash Provided by (Used in) Financing Activities
Increase in cash and cash equivalents
Cash and Cash Equivalents, Period Increase (Decrease)
Cash and cash equivalents:
Cash and Cash Equivalents, at Carrying Value [Abstract]
Beginning of period
End of period
SUPPLEMENTAL CASH FLOW INFORMATION
Supplemental Cash Flow Information [Abstract]
Interest paid, net of amounts capitalized
Interest Paid, Excluding Capitalized Interest, Operating Activities
Capital investments accrued but not yet paid
Capital Expenditures Incurred but Not yet Paid
Income taxes paid, net of refunds
Income Taxes Paid, Net
Non-cash asset financing
Capital Lease Obligations Incurred
Other Assets
Other Asset, Investment in Variable Interest Entity [Text Block]
Other Asset, Investment in Variable Interest Entity [Text Block]
Debt Disclosure [Abstract]
Schedule of Guarantor Obligations [Table]
Schedule of Guarantor Obligations [Table]
Guarantee Entity Name [Axis]
Guarantee Entity Name [Axis]
Guarantee Entity Name [Axis]
Guarantee Entity Name [Domain]
Guarantee Entity Name [Domain]
Guarantee Entity Name [Domain]
Kinder Morgan Energy Partners, L.P.
Kinder Morgan Energy Partners, L.P. [Member]
Kinder Morgan Energy Partners, L.P. [Member]
Chevron Phillips Chemical Company, LP
Chevron Phillips Chemical Company, LP [Member]
Chevron Phillips Chemical Company, LP [Member]
Guarantor Obligations, Nature [Axis]
Guarantor Obligations, Nature [Axis]
Guarantor Obligations, Nature [Domain]
Guarantor Obligations, Nature [Domain]
Payment Guarantee
Payment Guarantee [Member]
Indemnification Agreement
Indemnification Agreement [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations [Line Items]
BNSF Ownership Percentage
Noncontrolling Interest, Ownership Percentage by Parent
Principal Amount Guaranteed
Principal Amount Guaranteed
Principal Amount Guaranteed
Maximum Future Payments
Guarantor Obligations, Maximum Exposure, Undiscounted
Maximum Recourse Amount
Maximum Recourse Amount
Maximum Recourse Amount
Remaining Term (in years)
Remaining Term
Remaining Term
Capitalized Obligations
Guarantor Obligations, Current Carrying Value
Restatement to Prior Year Income [Table Text Block]
Restatement to Prior Year Income [Table Text Block]
Cumulative effect of adopting ASC 606 [Abstract]
Cumulative effect of adopting ASC 606 [Abstract]
Revenue, Initial Application Period Cumulative Effect Transition [Table]
Revenue, Initial Application Period Cumulative Effect Transition [Table]
Initial Application Period Cumulative Effect Transition [Axis]
Initial Application Period Cumulative Effect Transition [Axis]
Initial Application Period Cumulative Effect Transition [Domain]
Initial Application Period Cumulative Effect Transition [Domain]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit)
Related Party Transactions [Abstract]
Schedule of Related Party Transactions, by Related Party [Table]
Schedule of Related Party Transactions, by Related Party [Table]
Tax Period [Axis]
Tax Period [Axis]
Tax Period [Domain]
Tax Period [Domain]
Earliest Tax Year [Member]
Earliest Tax Year [Member]
Related Party [Axis]
Related Party [Axis]
Related Party [Domain]
Related Party [Domain]
Parent Company
Parent Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Cash distributions
Tax Refund From Parent
Tax Refund From Parent
Tax Refund From Parent
Tax payments to parent company
Income Tax Payments, To Parent By Reporting Entity
Income Tax Payments, To Parent By Reporting Entity
Receivable from parent company
Accounts Receivable, Related Parties
Payable to parent company
Accounts Payable, Related Parties
Tax payable to parent related to prior year tax audits
Tax payable to parent by reporting entity
Tax payable to parent by reporting entity
Related Party Transaction Revenue with Affiliates
Revenue from Related Parties
Related Party Transaction Expenditures from Transactions with Related Party
Related Party Transaction, Expenses from Transactions with Related Party
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments and Joint Ventures [Abstract]
Ownership Percentage in TTX Company
Equity Method Investment, Ownership Percentage
Investments related to TTX
Equity Method Investments
Consolidated Statements of Changes in Equity [Abstract]
Consolidated Statements of Changes in Equity [Abstract]
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Accounting Standards Update 2016-01 [Member]
Accounting Standards Update 2016-01 [Member]
Accounting Standards Update 2018-02 [Member]
Accounting Standards Update 2018-02 [Member] [Member]
Accounting Standards Update 2018-02 [Member]
Member's Equity
Members Equity [Member]
Member's equity.
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent [Member]
Balance
Stockholders' Equity Attributable to Parent
Cumulative Effect of New Accounting Principle in Period of Adoption
Cumulative Effect of New Accounting Principle in Period of Adoption
Cash distributions
Comprehensive income (loss), net of tax
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Balance
Equity [Abstract]
Reclassification out of Accumulated Other Comprehensive Income [Table]
Reclassification out of Accumulated Other Comprehensive Income [Table]
Accounting Standards Update 2018-02 [Member]
Accounting Standards Update 2018-02 [Member]
Accounting Standards Update 2018-02 Income Statement—Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification from AOCI, Before Tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax
Reclassification from AOCI, Tax benefit / (expense)
Reclassification from AOCI, Current Period, Tax
Reclassification from AOCI, Net of tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Entities [Table]
Legal Entity [Axis]
Legal Entity [Axis]
Entity [Domain]
Entity [Domain]
Entity Information [Line Items]
Entity Information [Line Items]
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Document Type
Document Type
Document Period End Date
Document Period End Date
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Amendment Flag
Amendment Flag
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Entity Small Business
Entity Small Business
Entity Emerging Growth Company
Entity Emerging Growth Company
Entity Current Reporting Status
Entity Current Reporting Status
Disclosure of Contract Asset and Liability [Abstract]
Disclosure of Contract Asset and Liability [Abstract]
Revenue from External Customers by Products and Services [Table]
Revenue from External Customers by Products and Services [Table]
Revenue from External Customer [Line Items]
Revenue from External Customer [Line Items]
Accounts Receivable, Net
Accounts Receivable, Net
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Equity Method Investee [Member]
Equity Method Investee [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss) Net of Tax, Period Change [Abstract]
Other Comprehensive Income (Loss) Net of Tax, Period Change [Abstract]
Beginning Balance
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Other comprehensive (loss) before reclassifications
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Ending Balance
Schedule of Variable Interest Entities [Table]
Schedule of Variable Interest Entities [Table]
Variable Interest Entities [Axis]
Variable Interest Entities [Axis]
Variable Interest Entity, Classification [Domain]
Variable Interest Entity, Classification [Domain]
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity [Line Items]
Company limited partner holding interest, percentage
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage
General partner holding interest, percentage
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest
Tax credits, reduction to income tax expense
Affordable Housing Tax Credits and Other Tax Benefits, Amount
Unamortized investment balance classified as Other Assets
Variable Interest Entity, Nonconsolidated, Unamortized Investment Balance
Variable Interest Entity, Nonconsolidated, Unamortized Investment Balance
Maximum exposure to loss
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount
Accounting Policies and Interim Results [Text Block]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Amortized intangible assets, gross carrying amount
Finite-Lived Intangible Assets, Gross
Amortized intangible assets, accumulated amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Amortized intangible liabilities, gross carrying amount
Finite-Lived Intangible Liabilities, Gross
Amount before amortization of liabilities, excluding financial liabilities, lacking physical substance with a finite life.
Amortized intangible liabilities, accumulated amortization
Finite-Lived Intangible Liabilities, Accumulated Amortization
Finite-Lived Intangible Liabilities, Accumulated Amortization
Amortization of Intangible Assets
Amortization of Intangible Assets
Amortization of Intangible Liabilities
Amortization of Intangible Liabilities
Amortization of Intangible Liabilities
Finite-Lived Intangible Assets and Liabilities, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization of intangible assets, Remainder of 2018
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year
Amortization of intangible liabilities, Remainder of 2018
Finite-Lived Intangible Liabilities, Amortization Expense, Remainder of Fiscal Year
Finite-Lived Intangible Liabilities, Amortization Expense, Remainder of Fiscal Year
Amortization of intangible assets, 2019
Finite-Lived Intangible Assets, Amortization Expense, Year Two
Amortization of intangible liabilities, 2019
Finite-Lived Intangible Liabilities, Amortization Expense, Year Two
Finite-Lived Intangible Liabilities, Amortization Expense, Year Two
Amortization of intangible assets, 2020
Finite-Lived Intangible Assets, Amortization Expense, Year Three
Amortization of intangible liabilities, 2020
Finite-Lived Intangible Liabilities, Amortization Expense, Year Three
Finite-Lived Intangible Liabilities, Amortization Expense, Year Three
Amortization of intangible assets, 2021
Finite-Lived Intangible Assets, Amortization Expense, Year Four
Amortization of intangible liabilities, 2021
Finite-Lived Intangible Liabilities, Amortization Expense, Year Four
Finite-Lived Intangible Liabilities, Amortization Expense, Year Four
Amortization of intangible assets, 2022
Finite-Lived Intangible Assets, Amortization Expense, Year Five
Amortization of intangible liabilities, 2022
Finite-Lived Intangible Liabilities, Amortization Expense, Year Five
Finite-Lived Intangible Liabilities, Amortization Expense, Year Five
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]
Revenue from Contract with Customer [Text Block]
Investments, Debt and Equity Securities [Abstract]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Employment Benefit Plans
Pension and Other Postretirement Benefits Disclosure [Text Block]
Accounting Pronouncements
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Related Party Transaction [Axis]
Related Party Transaction [Axis]
Related Party Transaction [Domain]
Related Party Transaction [Domain]
Schedule of Related Party Transactions [Table Text Block]
Schedule of Related Party Transactions [Table Text Block]
Accumulated Other Comprehensive Income
Comprehensive Income (Loss) Note [Text Block]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Debt Instrument [Axis]
Debt Instrument [Axis]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Four Point One Five Percent Debentures Due December 15, 2048 [Member] [Member] [Member] [Member]
Four Point One Five Percent Debentures Due December 15, 2048 [Member] [Member] [Member] [Member]
Four Point One Five Percent Debentures Due December 15, 2048
Four Point Zero Five Percent Debentures Due June 15, 2048 [Member] [Member] [Member]
Four Point Zero Five Percent Debentures Due June 15, 2048 [Member] [Member] [Member]
Four Point Zero Five Percent Debentures Due June 15, 2048 [Member] [Member] [Member]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Long-term Debt, Type [Domain]
Corporate Debt Securities [Member]
Corporate Debt Securities [Member]
SEC Debt Shelf Registration [Member]
SEC Debt Shelf Registration [Member]
SEC Debt Shelf Registration [Member]
Junior Subordinated Debt
Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Debt Instrument, Face Amount
Debt Instrument, Face Amount
Debt Instrument, Interest Rate, Stated Percentage
Debt Instrument, Interest Rate, Stated Percentage
Remaining Debt Securities Authorized by the Board
Remaining Debt Securities Authorized by the Board
Remaining Debt Securities Authorized by the Board
Subordinated notes related to financial covenants
Debt Instrument, Covenant Debt
Certain issued and outstanding junior subordinated notes pertaining to certain financial covenants.
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]
Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block]
Remaining Performance Obligations [Abstract]
Remaining Performance Obligations [Abstract]
Revenue, Remaining Performance Obligation
Revenue, Remaining Performance Obligation, Amount
Fair value of debt excluding capital leases and unamortized gains on interest rate swaps
Long-term Debt, Fair Value
Book value of debt excluding capital leases, the associated unamortized fair value adjustment and unamortized gains on interest rate swaps
Long-term Debt
Debt Securities, Trading, and Equity Securities, FV-NI [Table]
Debt Securities, Trading, and Equity Securities, FV-NI [Table]
Financial Instrument [Axis]
Financial Instrument [Axis]
Financial Instruments [Domain]
Financial Instruments [Domain]
Schedule of Trading Securities [Line Items]
Debt and Equity Securities, FV-NI [Line Items]
Trading Securities, Debt
Debt Securities, Trading
Trading Securities, Equity
Trading Securities, Equity
Trading Securities, Total
Debt Securities, Trading, and Equity Securities, FV-NI
Disaggregation of Revenue [Table Text Block]
Disaggregation of Revenue [Table Text Block]
Schedule of Guarantor Obligations
Schedule of Guarantor Obligations [Table Text Block]
Debt
Debt Disclosure [Text Block]
Schedule of Operating Leased Assets [Table]
Schedule of Operating Leased Assets [Table]
Equipment
Equipment [Member]
Operating Leased Assets [Line Items]
Operating Leased Assets [Line Items]
Other Intangible Assets and Liabilities
Goodwill And Other Intangible Assets and Liabilities [Text Block]
Goodwill And Other Intangible Assets and Liabilities [Text Block]
Related Party Transactions
Related Party Transactions Disclosure [Text Block]
Consolidated Statements of Comprehensive Income [Abstract]
Consolidated Statements of Comprehensive Income [Abstract]
Other Comprehensive Income:
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Change in pension and retiree health and welfare benefits, net of tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax
Change in accumulated other comprehensive income (loss) of equity method investees
Change in Other Comprehensive Income of Equity Method Investees
Change in Other Comprehensive Income of Equity Method Investees
Other comprehensive income (loss), net of tax
Other Comprehensive Income (Loss), Net of Tax
Total comprehensive income
Schedule of Financing Receivables Past Due [Table]
Schedule of Financing Receivables Past Due [Table]
Financing Receivables, Period Past Due [Axis]
Financing Receivables, Period Past Due [Axis]
Financing Receivables, Period Past Due [Domain]
Financing Receivables, Period Past Due [Domain]
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Allowance for bill adjustments and uncollectible accounts
Allowance for Bill Adjustments and Doubtful Accounts Receivable, Current
A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that have bill adjustments or are expected to be uncollectible.
Accounts Receivable, Net, Current
Accounts Receivable, Net, Current
Schedule of Loss Contingencies by Contingency
Schedule of Loss Contingencies by Contingency [Table Text Block]
Accrued Obligations for Environmental Matters
Accrual for Environmental Loss Contingencies [Table Text Block]
Accrual for Environmental Loss Contingencies [Table Text Block]
Unasserted Claim
Unasserted Claim [Member]
Personal Injury [Member]
Personal Injury [Member]
Personal Injury [Member]
Accrual for loss contingencies, revisions in estimates
Accrual for loss contingencies, revisions in estimates
Amount of expense (reversal of expense) which increases (decreases) the accrual for loss contingencies from revisions in estimates to existing obligations.
Asbestos and Personal Injury [Abstract]
Loss Contingency, Estimate [Abstract]
Percent of future unasserted asbestos claims to be filed within the next ten years
Percent of Future Unasserted Asbestos Claims To be Filed Within the Next Ten Years
Percent of Future Unasserted Asbestos Claims To be Filed Within the Next Ten Years
Percent of future unasserted asbestos claims to be filed within the next fifteen years
Percent of Future Unasserted Asbestos Claims to be Filed Within the Next Fifteen Years
Percent of Future Unasserted Asbestos Claims to be Filed Within the Next Fifteen Years
Percent of future unasserted asbestos claims to be filed within the next twenty-five years
Percent of Future Unasserted Asbestos Claims to be Filed Within the Next Twenty-five Years
Percent of Future Unasserted Asbestos Claims to be Filed Within the Next Twenty-five Years
Length in years for 65 percent of future unasserted asbestos claims to be filed
Length in Years for 65 Percent of Future Unasserted Asbestos Claims to be Filed
Length in Years for 65 Percent of Future Unasserted Asbestos Claims to be Filed
Length in years for 80 percent of future unasserted asbestos claims to be filed
Length in Years for 80 Percent of Future Unasserted Asbestos Claims to be Filed
Length in Years for 80 Percent of Future Unasserted Asbestos Claims to be Filed
Length in years for 95 percent of future unasserted asbestos claims to be filed
Length in Years for 95 Percent of Future Unasserted Claims to be Filed
Length in Years for 95 Percent of Future Unasserted Claims to be Filed
Loss Contingency Accrual [Roll Forward]
Loss Contingency Accrual [Roll Forward]
Beginning balance
Loss Contingency Accrual
Accruals / changes in estimates
Loss Contingency, Provision and Changes in Estimates
Amount of expense for newly incurred loss contingencies and revisions to previously reported estimates
Payments
Loss Contingency Accrual, Payments
Ending balance
Current assets:
Assets, Current [Abstract]
Cash and cash equivalents
Accounts receivable, net
Materials and supplies
Materials, Supplies, and Other
Other current assets
Other Assets, Current
Total current assets
Assets, Current
Property and equipment, net of accumulated depreciation of $9,596 and $8,627, respectively
Property, Plant and Equipment, Net
Goodwill
Goodwill
Intangible assets, net
Finite-Lived Intangible Assets, Net
Other assets
Other Assets, Noncurrent
Total assets
Assets
LIABILITIES AND EQUITY
Liabilities and Equity [Abstract]
Current liabilities:
Liabilities, Current [Abstract]
Accounts payable and other current liabilities
Accounts Payable and Accrued Liabilities, Current
Long-term debt due within one year
Long-term Debt and Capital Lease Obligations, Current
Total current liabilities
Liabilities, Current
Long-term debt
Long-term Debt and Capital Lease Obligations
Deferred income taxes
Deferred Tax Liabilities, Net, Noncurrent
Casualty and environmental liabilities
Casualty and environmental liabilities
Noncurrent portion of costs accrued as of the balance sheet date for casualty, environmental and other loss contingencies.
Intangible liabilities, net
Intangible liabilities, net
The aggregate sum of gross carrying value of a major finite-lived intangible liability class, less accumulated amortization and any impairment charges.
Pension and retiree health and welfare liability
Liability, Defined Benefit Plan, Noncurrent
Other liabilities
Other Liabilities, Noncurrent
Total liabilities
Liabilities
Commitments and contingencies (see Notes 7 and 8)
Commitments and Contingencies
Equity:
Stockholders' Equity Attributable to Parent [Abstract]
Member's equity
Members' Equity
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Total equity
Total liabilities and equity
Liabilities and Equity
Schedule of Net Benefit Costs
Schedule of Net Benefit Costs [Table Text Block]