Debt Disclosure [Abstract]
Debt and Banking Arrangements [Text Block]
Debt Disclosure [Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Equity Method Investments [Table]
Schedule of Equity Method Investments [Table]
Schedule of Equity Method Investment, Equity Method Investee, Name [Axis]
Investment, Name [Axis]
Equity Method Investee, Name [Domain]
Investment, Name [Domain]
Gulfstream Natural Gas System, L.L.C.[Member]
Gulfstream Natural Gas System, LLC [Member]
-- None. No documentation exists for this element. --
Utica East Ohio Midstream, LLC [Member]
Utica East Ohio Midstream, LLC [Member]
Utica East Ohio Midstream, LLC [Member]
Delaware Basin Gas Gathering System [Member]
Delaware Basin Gas Gathering System [Member]
Delaware Basin Gas Gathering System [Member]
Laurel Mountain Midstream, LLC [Member]
Laurel Mountain Midstream, LLC [Member]
-- None. No documentation exists for this element. --
Caiman Energy II [Member]
Caiman Energy II [Member]
-- None. No documentation exists for this element. --
Discovery Producer Services LLC [Member]
Discovery Producer Services LLC [Member]
-- None. No documentation exists for this element. --
Overland Pass Pipeline Company LLC [Member]
Overland Pass Pipeline Company LLC [Member]
-- None. No documentation exists for this element. --
Schedule of Equity Method Investments [Line Items]
Schedule of Equity Method Investments [Line Items]
Number Of Interstate Natural Gas Pipelines
Number Of Interstate Natural Gas Pipelines
Number Of Interstate Natural Gas Pipelines
Equity Method Investment, Ownership Percentage
Equity Method Investment, Ownership Percentage
Schedule of Subsidiary of Limited Liability Company or Limited Partnership [Table]
Schedule of Subsidiary of Limited Liability Company or Limited Partnership [Table]
Segments [Axis]
Segments [Axis]
Segments [Domain]
Segments [Domain]
Williams Partners [Member]
Williams Partners [Member]
Williams Partners L.P.
Sale of Stock [Axis]
Sale of Stock [Axis]
Sale of Stock [Domain]
Sale of Stock [Domain]
Financial Repositioning [Member]
Financial Repositioning [Member]
Financial Repositioning [Member]
Partner Type [Axis]
Partner Type [Axis]
Partner Type of Partners' Capital Account, Name [Domain]
Partner Type of Partners' Capital Account, Name [Domain]
General and Limited Partner [Member]
General and Limited Partner [Member]
General and Limited Partner [Member]
Limited Partner [Member]
Limited Partner [Member]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Noncontrolling Interest [Member]
Noncontrolling Interest [Member]
Capital in excess of par value [Member]
Additional Paid-in Capital [Member]
Deferred Income Taxes [Member]
Deferred Income Taxes [Member]
Deferred Income Taxes impact due to issuance of equity by subsidiary
Legal Entity [Axis]
Legal Entity [Axis]
Entity [Domain]
Entity [Domain]
Williams Partners L.P. [Member]
Williams Partners L. P. [Member]
Constitution Pipeline Company LLC [Member]
Constitution Pipeline Company LLC [Member]
Constitution Pipeline Company LLC, the primary beneficiary of a variable interest entity.
Appalachia Midstream Services, LLC [Member]
Appalachia Midstream Services, LLC [Member]
Appalachia Midstream Services, LLC [Member]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
WPZ Merger Agreement [Member]
WPZ Merger Public Unit Exchange [Member]
WPZ Merger Public Unit Exchange [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest
Sale of Stock, Number of Shares Issued in Transaction
Sale of Stock, Number of Shares Issued in Transaction
Payments to Acquire Limited Partnership Interests
Payments to Acquire Limited Partnership Interests
Sale of Stock, Price Per Share
Sale of Stock, Price Per Share
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Net
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Net
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets
Termination Fee
Gain (Loss) on Contract Termination
Goodwill
Goodwill
Variable Interest Entity Ownership Percentage
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage
Maximum Reduction Of Quarterly Incentive Distributions
Maximum Reduction Of Quarterly Incentive Distributions
Maximum Reduction Of Quarterly Incentive Distributions
Reduction in incentive distribution rights payment
Reduction in incentive distribution rights payment
Amount IDR payment reduced due to temporary waiver of IDRs
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest
Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest
Fair Value Disclosures [Abstract]
Fair Value Measurements and Guarantees [Text Block]
Fair Value Disclosures [Text Block]
Stockholders' Equity Note [Abstract]
Reclassification out of Accumulated Other Comprehensive Income [Table]
Reclassification out of Accumulated Other Comprehensive Income [Table]
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]
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Pension and Other Post Retirement Benefits
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Foreign Currency Translation
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Derivative Instrument [Axis]
Derivative Instrument [Axis]
Derivative Contract [Domain]
Derivative Contract [Domain]
Energy Commodity Contracts [Member]
Commodity Contract [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax
Amortization of prior service cost (credit) included in net periodic benefit cost
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax
Amortization of actuarial (gain) loss included in net periodic benefit cost
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, before Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax
Income tax benefit
Income Tax Expense (Benefit)
Net Of Tax Reclassifications Of Pension And Foreign Currency Adjustments
Net Of Tax Reclassifications Of Pension And Foreign Currency Adjustments
Net Of Tax Reclassifications Of Pension And Foreign Currency Adjustments
Amounts reclassified from accumulated other comprehensive income (loss)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Variable Interest Entity Disclosures [Abstract]
-- None. No documentation exists for this element. --
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, Primary Beneficiary [Member]
Variable Interest Entity, Primary Beneficiary [Member]
Gulfstar One [Member]
Gulfstar One [Member]
Gulfstar One, the primary beneficiary of a variable interest entity.
Constitution Pipeline Company LLC [Member]
Cardinal Gas Services LLC [Member]
Cardinal Gas Services LLC [Member]
Cardinal Gas Services LLC [Member]
Jackalope Gas Gathering Services LLC [Member]
Jackalope Gas Gathering Services LLC [Member]
Jackalope Gas Gathering Services LLC [Member]
Balance Sheet Location [Axis]
Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Balance Sheet Location [Domain]
Cash and Cash Equivalents [Member]
Cash and Cash Equivalents [Member]
Trade accounts and other receivables - net [Member]
Accounts Receivable [Member]
Inventories [Member]
Inventories [Member]
Assets held for sale [Member]
Assets Held For Sale1 [Member]
Assets Held For Sale1 [Member] - Balance Sheet Location
Other Current Assets [Member]
Other Current Assets [Member]
Investments [Member]
Investments [Member]
Property Plant And Equipment, net [Member]
Property, Plant and Equipment [Member]
Intangible Assets, net [Member]
Other Intangible Assets [Member]
Regulatory assets, Deferred Charges, and Other Noncurrent Assets [Member]
Other Noncurrent Assets [Member]
Accounts Payable [Member]
Accounts Payable [Member]
Liabilities Of Disposal Group Held For Sale [Member]
Liabilities Of Disposal Group Held For Sale [Member]
Liabilities Of Disposal Group Held For Sale [Member]
Accrued Liabilities including current asset retirement obligations [Member]
Accrued Liabilities [Member]
Commercial Paper [Member]
Commercial Paper [Member]
Long-term debt due within one year [Member]
Other Current Liabilities [Member]
Long-term Debt [Member]
Long-term Debt [Member]
Deferred Income Tax Liabilities [Member]
Noncurrent Asset Retirement Obligation [Member]
Asset Retirement Obligation Costs [Member]
Regulatory liabilities, deferred income, and other noncurrent liabilities [Member]
Other Noncurrent Liabilities [Member]
Other Commitments [Axis]
Other Commitments [Axis]
Other Commitments [Domain]
Other Commitments [Domain]
Estimated Remaining Construction Costs For Variable Interest Entity [Member]
Estimated Remaining Construction Costs For Variable Interest Entity [Member]
Estimated Remaining Construction Costs For Variable Interest Entity [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity [Line Items]
Other commitment
Other Commitment
Capitalized Project Development Costs
Development Costs, Cumulative
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]
Variable Interest Entity, Consolidated, Carrying Amount, Assets
Variable Interest Entity, Consolidated, Carrying Amount, Assets
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
Earnings Per Share [Abstract]
Earnings (Loss) Per Common Share [Text Block]
Earnings Per Share [Text Block]
Document and Entity Information [Abstract]
-- None. No documentation exists for this element. --
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Document Type
Document Type
Document Period End Date
Document Period End Date
Amendment Flag
Amendment Flag
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Variable Interest Entities [Text Block]
Variable Interest Entity Disclosure [Text Block]
Statement of Stockholders' Equity [Abstract]
Statement [Table]
Statement [Table]
Total Stockholders’ Equity
Parent [Member]
Common Stock
Common Stock [Member]
Capital in Excess of Par Value
Retained Deficit
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent [Member]
Treasury Stock
Treasury Stock [Member]
Noncontrolling Interests
Statement [Line Items]
Statement [Line Items]
December 31, 2016
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Net income (loss)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Other comprehensive income (loss)
Other Comprehensive Income (Loss), Net of Tax
Issuance of common stock (Note 10)
Stock Issued During Period, Value, New Issues
Cash dividends – common stock
Dividends, Common Stock, Cash
Dividends and distributions to noncontrolling interests
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders
Stock-based compensation and related common stock issuances, net of tax
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures
Adoption of ASU 2016-09 (Note 1)
CumulativeEffectOfNewAccountingPrincipleInPeriodAdopted
The cumulative effect of a new accounting principle in the period it was adopted, with period type of duration.
Sales of limited partner units of Williams Partners L.P.
Noncontrolling Interest, Increase from Sale of Parent Equity Interest
Changes in ownership of consolidated subsidiaries, net
Contributions from noncontrolling interests
Contributions From Noncontrolling Interests
Noncontrolling interest, increase from contributions from noncontrolling interest holders.
Other
Stockholders' Equity, Other
Net increase (decrease) in equity
Stockholders' Equity, Period Increase (Decrease)
September 30, 2017
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plans Disclosures [Table]
Schedule of Defined Benefit Plans Disclosures [Table]
Retirement Plan Type [Axis]
Retirement Plan Type [Axis]
Retirement Plan Type [Domain]
Retirement Plan Type [Domain]
Pension Benefits [Member]
Pension Plan [Member]
Other Postretirement Benefits [Member]
Other Postretirement Benefits Plan [Member]
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Subsequent Event [Member]
Subsequent Event [Member]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Minimum [Member]
Minimum [Member]
Maximum [Member]
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Components of net periodic benefit cost (credit):
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost
Defined Benefit Plan, Service Cost
Interest cost
Defined Benefit Plan, Interest Cost
Expected return on plan assets
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Amortization of prior service cost (credit)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Amortization of net actuarial loss
Defined Benefit Plan, Amortization of Gain (Loss)
Reclassification to regulatory liability
Reclassification Of Employee Benefit Cost / Credit To Regulatory Asset / Liability
Reclassification of employee benefit cost / credit not collected in rates to regulatory asset / liability
Net actuarial loss from settlements
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement
Net periodic benefit cost (credit)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Amortization of prior service cost (credit) from regulatory assets (liabilities)
Defined Benefit Plan Amortization From Regulatory Assets Liabilities Of Prior Service Cost Credit
Defined Benefit Plan Amortization From Regulatory Assets (Liabilities) Of Prior Service Cost (Credit)
Employer contributions
Defined Benefit Plan, Plan Assets, Contributions by Employer
Estimated future employer contributions in current fiscal year
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations [Table]
Disposal Groups, Including Discontinued Operations [Table]
Name of Property [Axis]
Name of Property [Axis]
Name of Property [Domain]
Name of Property [Domain]
Geismar [Member]
Geismar [Member]
-- None. No documentation exists for this element. --
Williams Partners L.P. [Member]
Williams Partners L.P. [Member]
Williams Partners L.P. [Member]
Other [Member]
Other [Member]
Other [Member]
Debt Instrument [Axis]
Debt Instrument [Axis]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Variable Interest Term Loan due 2018 [Member]
Variable Interest Term Loan due 2018 [Member]
Variable Interest Term Loan due 2018 [Member]
Disposal Group Name [Axis]
Disposal Group Name [Axis]
Disposal Group Name [Domain]
Disposal Group Name [Domain]
Williams Olefins, L.L.C. [Member]
Williams Olefins, L.L.C. [Member]
Williams Olefins, L.L.C., a wholly-owned subsidiary of WPZ, which owns interest in the Geismar, Louisiana, olefins plant [Member]
Canadian Operations [Member]
Canadian Operations [Member]
Canadian Operations [Member]
Reduction In Incentive Distribution Rights Payment [Member]
Reduction In Incentive Distribution Rights Payment [Member]
Reduction In Incentive Distribution Rights [Member]
NGL And Petchem Services [Member]
NGL And Petchem Services [Member]
NGL and Petchem Services segment
Income Statement and Additional Disclosures by Disposal Groups [Line Items]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Consideration
Disposal Group, Including Discontinued Operation, Consideration
Cash
Cash
Gain (Loss) on Disposition of Business
Gain (Loss) on Disposition of Business
Assets Held-for-sale, Not Part of Disposal Group
Assets Held-for-sale, Not Part of Disposal Group
Disposal Group, Including Discontinued Operation, Other Assets, Current
Disposal Group, Including Discontinued Operation, Other Assets, Current
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment
Disposal Group, Including Discontinued Operation, Property, Plant and Equipment
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent
Disposal Group, Including Discontinued Operation, Assets
Disposal Group, Including Discontinued Operation, Assets
Disposal Group, Including Discontinued Operation, Other Liabilities, Current
Disposal Group, Including Discontinued Operation, Other Liabilities, Current
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent
Disposal Group, Including Discontinued Operation, Liabilities, Current
Disposal Group, Including Discontinued Operation, Liabilities, Current
Income (Loss) from Individually Significant Component Disposed of Attributable to Parent, before Income Tax [Abstract]
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax [Abstract]
Income (loss) before income taxes of disposal group
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, before Income Tax
Income (loss) before income taxes of disposal group attributable to the Williams Companies, Inc.
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, Attributable to Parent, before Income Tax
Extinguishment of Debt, Amount
Extinguishment of Debt, Amount
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Consolidation Items [Axis]
Consolidation Items [Axis]
Consolidation Items [Domain]
Consolidation Items [Domain]
Intersegment Elimination [Member]
Intersegment Eliminations [Member]
Operating Segments [Member]
Operating Segments [Member]
Segment Reporting Information By Segments [Axis]
Other [Member]
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Segment revenues
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Service revenues
Sales Revenue, Services, Net
Product sales
Sales Revenue, Goods, Net
Total revenues
Revenues
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Subsegments [Axis]
Subsegments [Axis]
Subsegments [Domain]
Subsegments [Domain]
Mid Continent [Member]
Mid Continent [Member]
Mid Continent [Member]
Marcellus South [Member]
Marcellus South [Member]
MarcellusSouth [Member]
Fair Value by Measurement Frequency [Axis]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Hierarchy [Axis]
Fair Value, Hierarchy [Axis]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value Hierarchy [Domain]
Level 3 [Member]
Fair Value, Inputs, Level 3 [Member]
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
Income Statement Location [Domain]
Impairment Of Long Lived Assets [Member]
Impairment Of Long Lived Assets [Member]
Impairment Of Long Lived Assets [Member]
Impairment Of Certain Assets [Member]
Impairment Of Certain Assets [Member]
Impairment Of Certain Assets [Member]
Impairment Of Equity-Method Investments [Member]
Impairment Of Equity-Method Investments [Member]
Impairment Of Equity-Method Investments [Member]
Property Plant And Equipment, Net And Intangible Assets, Net Of Accumulated Amortization [Member]
Property Plant And Equipment, Net And Intangible Assets, Net Of Accumulated Amortization [Member]
PropertyPlantAndEquipment,NetAndIntangiblesAssetsNetOfAccummulatedAmortization [Member]
Assets Held For Sale [Member]
Other [Member]
Investment, Name [Axis]
Investment, Name [Domain]
Appalachia Midstream Investments [Member]
Appalachia Midstream Investments [Member]
Appalachia Midstream Investments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Assets Measured On Nonrecurring Basis [Abstract]
Fair Value Assets Measured On Nonrecurring Basis [Abstract]
Fair Value Assets Measured On Nonrecurring Basis [Abstract]
Asset Impairment Charges
Asset Impairment Charges
Property Plant And Equipment And Intangibles, Fair Value Disclosure
Property Plant And Equipment And Intangibles, Fair Value Disclosure
PropertyPlantAndEquipmentAndIntangibles,FairValueDisclosure
Fair Value of Property, Plant, and Equipment
Property, Plant, and Equipment, Fair Value Disclosure
Assets Held-for-sale, Long-Lived, Fair Value Disclosure
Assets Held-for-sale, Long Lived, Fair Value Disclosure
Disposal Group, Not Discontinued Operation, Loss (Gain) on writedown
Fair value of investment
Investments, Fair Value Disclosure
Impairment of equity-method investments
Equity Method Investment, Other than Temporary Impairment
Discount rate
Fair Value Inputs, Discount Rate
Impairment of certain assets
Tangible Asset Impairment Charges
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]
Reconciliation of Modified EBITDA to Net Income (Loss) [Table Text Block]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Reclassifications Out Of Accumulated Other Comprehensive Income [Table Text Block]
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
Statement, Equity Components [Axis]
Commitments and Contingencies Disclosure [Abstract]
Loss Contingencies [Table]
Loss Contingencies [Table]
Segments [Domain]
Component Of Insurance Policy1 [Axis]
Component Of Insurance Policy1 [Axis]
Component Of Insurance Policy [Domain]
Component Of Insurance Policy [Domain]
General Liability [Member]
General Liability [Member]
Loss Contingencies by Nature of Contingency [Axis]
Loss Contingency Nature [Axis]
Loss Contingency, Nature [Domain]
Loss Contingency, Nature [Domain]
Geismar Incident [Member]
Geismar Incident [Member]
-- None. No documentation exists for this element. --
Former Alaska Refinery [Member]
Former Alaska Refinery [Member]
Energy Transfer Merger [Member]
Energy Transfer Merger [Member]
Energy Transfer Merger [Member]
Gas Pipeline [Member]
Gas Pipeline [Member]
Natural Gas Underground Storage Facilities [Member]
Natural Gas Under Ground Storage Facilities [Member]
Natural gas underground storage facilities.
Former Operations [Member]
Former Operations [Member]
Former Operations.
Loss Contingencies [Line Items]
Loss Contingencies [Line Items]
Insurance deductibles
Insurance Deductibles
Amount of risk retained by the entity before the insurance arrangement begins to provide coverage
Aggregate limit of insurance
Maximum Insurance Recoverable Amount
Maximum amount recoverable under various insurance policies.
Loss contingency, range of possible loss, maximum
Loss Contingency, Estimate of Possible Loss
Loss contingency, damages sought, value
Loss Contingency, Damages Sought, Value
Accrued environmental loss liabilities
Accrual for Environmental Loss Contingencies
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Effect [Abstract]
Other Comprehensive Income, Unrealized Gain (Loss) on Derivatives Arising During Period, Tax
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax
Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Tax
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax
Other Comprehensive Income (Loss), Tax [Abstract]
Foreign currency translation adjustments, taxes
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation,Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax [Abstract]
Other Comprehensive Income Loss Pension And Other Postretirement Benfit Plans, Benefit Plan Improvement, Tax Effect
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Tax
Amortization of prior service cost (credit) included in net periodic benefit cost, taxes
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, Tax
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax
Amortization of actuarial (gain) loss included in net periodic benefit cost, taxes
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax
Line of Credit Facility [Table]
Line of Credit Facility [Table]
Credit Facility [Axis]
Credit Facility [Axis]
Credit Facility [Domain]
Credit Facility [Domain]
Letters Of Credit Under Certain Bilateral Bank Agreements [Member]
Letters Of Credit Under Certain Bilateral Bank Agreements [Member]
Letters of Credit Under Certain Bilateral Bank Agreements [Member]
Letter of Credit [Member]
Letter of Credit [Member]
Letters Of Credit Under Sublimit [Member]
Letters Of Credit Under Sublimit [Member]
Letters Of Credit Under Sublimit [Member]
Williams Companies Inc [Member]
Williams Companies Inc [Member]
-- None. No documentation exists for this element. --
Northwest Pipeline LLC [Member]
Northwest Pipeline LLC [Member]
Northwest Pipeline LLC.
Credit Facility and Commercial Paper [Line Items]
Line of Credit Facility [Line Items]
Credit facility, capacity
Line of Credit Facility, Maximum Borrowing Capacity
Credit facility, loans outstanding
Long-term Line of Credit
Credit facility, letters of credit outstanding
Letters of Credit Outstanding, Amount
Commercial paper, outstanding
Commercial Paper
Commercial paper, weighted average interest rate
Short-term Debt, Weighted Average Interest Rate, at Point in Time
Statement of Financial Position [Abstract]
ASSETS
Assets [Abstract]
Current assets:
Assets, Current [Abstract]
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Trade accounts and other receivables (net of allowance of $6 at September 30, 2017 and $6 at December 31, 2016)
Receivables, Net, Current
Deferred income tax assets
Deferred Income Taxes and Other Tax Receivable, Current
Inventories
Inventory, Net
Assets held for sale (Note 3)
Disposal Group, Including Discontinued Operation, Assets, Current
Other current assets and deferred charges
Other Assets, Current
Total current assets
Assets, Current
Investments
Equity Method Investments
Property, plant, and equipment
Property, Plant and Equipment, Gross
Accumulated depreciation and amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Property, plant, and equipment – net
Property, Plant and Equipment, Net
Intangible assets – net of accumulated amortization
Intangible Assets, Net (Including Goodwill)
Regulatory assets, deferred charges, and other
Other Assets, Noncurrent
Total assets
Assets
LIABILITIES AND EQUITY
Liabilities [Abstract]
Current liabilities:
Liabilities, Current [Abstract]
Accounts payable
Accounts Payable, Current
Liabilities held for sale (Note 3)
Accrued liabilities
Accrued Liabilities, Current
Commercial paper
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 tax liabilities
Deferred Tax Liabilities, Net, Noncurrent
Regulatory liabilities, deferred income, and other
Other Liabilities and Deferred Revenue, Noncurrent
Contingent liabilities (Note 12)
Commitments and Contingencies
Equity:
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Stockholders’ equity:
Stockholders' Equity Attributable to Parent [Abstract]
Common stock (960 million shares authorized at $1 par value; 861 million shares issued at September 30, 2017 and 785 million shares issued at December 31, 2016)
Common Stock, Value, Issued
Capital in excess of par value
Additional Paid in Capital, Common Stock
Retained deficit
Retained Earnings (Accumulated Deficit)
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Treasury stock, at cost (35 million shares of common stock)
Treasury Stock, Value
Total stockholders’ equity
Stockholders' Equity Attributable to Parent
Noncontrolling interests in consolidated subsidiaries
Stockholders' Equity Attributable to Noncontrolling Interest
Total equity
Total liabilities and equity
Liabilities and Equity
Comprehensive income (loss):
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Other comprehensive income (loss):
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cash flow hedging activities:
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract]
Net unrealized gain (loss) from derivative instruments, net of taxes of $2 and $1 in 2017
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax
Reclassifications into earnings of net derivative instruments (gain) loss, net of taxes of $1 and $1 in 2017
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax
Foreign currency translation activities:
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract]
Foreign currency translation adjustments, net of taxes of ($25) and ($37) in 2016
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax
Reclassification into earnings upon sale of foreign entity, net of taxes of ($36) in 2016
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax
Pension and other postretirement benefits:
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract]
Prior service credit (cost) arising during the year, net of taxes
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax
Amortization of prior service cost (credit) included in net periodic benefit cost, net of taxes of $1 and $2 in 2017 and $0 and $1 in 2016
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax
Net actuarial gain (loss) arising during the year, net of taxes of $2 in 2016
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax
Amortization of actuarial (gain) loss included in net periodic benefit cost, net of taxes of ($2) and ($7) in 2017 and ($3) and ($9) in 2016
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax
Other comprehensive income (loss)
Comprehensive income (loss)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Less: Comprehensive income (loss) attributable to noncontrolling interests
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Comprehensive income (loss) attributable to The Williams Companies, Inc.
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Equity securities:
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract]
Employee Benefit Plans [Text Block]
Pension and Other Postretirement Benefits Disclosure [Text Block]
Income Tax Disclosure [Abstract]
Provision (Benefit) for Income Taxes [Text Block]
Income Tax Disclosure [Text Block]
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Table]
Accumulated Other Comprehensive Income (Loss) [Member]
Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total, Beginning Balance
Other comprehensive income (loss) before reclassifications
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Total, Ending Balance
Other Income and Expenses [Abstract]
Other Income and Expenses [Table Text Block]
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]
Statement of Cash Flows [Abstract]
OPERATING ACTIVITIES:
Net Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile to net cash provided (used) by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization
Depreciation, Depletion and Amortization
Provision (benefit) for deferred income taxes
Deferred Income Tax Expense (Benefit)
Net (gain) loss on disposition of equity-method investments
Equity Method Investment, Realized Gain (Loss) on Disposal
Gain on sale of Geismar Interest (Note 3)
Gain (Loss) on Disposition of Assets
Impairment of and net (gain) loss on sale of assets and businesses
Impairment Of And Net Gain Loss On Sale Of Assets And Businesses
Impairment of and net (gain) loss on sale of assets and businesses
Amortization of stock-based awards
Share-based Compensation
Cash provided (used) by changes in current assets and liabilities:
Increase (Decrease) in Operating Capital [Abstract]
Accounts and notes receivable
Increase (Decrease) in Accounts and Notes Receivable
Inventories
Increase (Decrease) in Inventories
Other current assets and deferred charges
Increase (Decrease) in Other Current Assets
Accounts payable
Increase (Decrease) in Accounts Payable
Accrued liabilities
Increase (Decrease) in Accrued Liabilities
Other, including changes in noncurrent assets and liabilities
Other Operating Activities, Cash Flow Statement
Net cash provided (used) by operating activities
Net Cash Provided by (Used in) Operating Activities
FINANCING ACTIVITIES:
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from (payments of) commercial paper – net
Proceeds from (Repayments of) Commercial Paper
Proceeds from long-term debt
Proceeds from Issuance of Long-term Debt
Payments of long-term debt
Repayments of Long-term Debt
Proceeds from issuance of common stock
Proceeds from Issuance of Common Stock
Dividends paid
Payments of Ordinary Dividends, Common Stock
Dividends and distributions paid to noncontrolling interests
Payments of Ordinary Dividends, Noncontrolling Interest
Contributions from noncontrolling interests
Proceeds from Noncontrolling Interests
Payments for debt issuance costs
Payments of Debt Issuance Costs
Special distribution from Gulfstream
Special Distribution From Gulfstream
Special cash distribution received from equity-method investee.
Contribution to Gulfstream for repayment of debt
Contribution To Gulfstream For Repayment Of Debt1
Contribution to Gulfstream for repayment of debt maturities
Other – net
Proceeds from (Payments for) Other Financing Activities
Net cash provided (used) by financing activities
Net Cash Provided by (Used in) Financing Activities
INVESTING ACTIVITIES:
Net Cash Provided by (Used in) Investing Activities [Abstract]
Capital expenditures (1)
Payments to Acquire Property, Plant, and Equipment
Dispositions – net
Payments for (Proceeds from) Productive Assets
Proceeds from sale of businesses, net of cash divested
Proceeds from Divestiture of Businesses, Net of Cash Divested
Proceeds from dispositions of equity-method investments
Proceeds from Sale of Equity Method Investments
Purchases of and contributions to equity-method investments
Payments to Acquire Equity Method Investments
Distributions from unconsolidated affiliates in excess of cumulative earnings
Proceeds from Equity Method Investment, Distribution, Return of Capital
Other – net
Payments for (Proceeds from) Other Investing Activities
Net cash provided (used) by investing activities
Net Cash Provided by (Used in) Investing Activities
Increase (decrease) in cash and cash equivalents
Cash and Cash Equivalents, Period Increase (Decrease)
Cash and cash equivalents held for sale
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of period
(1) Increases to property, plant, and equipment
Property, Plant and Equipment, Additions
Changes in related accounts payable and accrued liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilitiesRelatedToCapitalExpendituresIncurredButNotYetPaid
The increase / decrease during the reporting period in future cash outflows to pay for purchases of fixed assets that have occurred.
Schedule of Line of Credit Facilities [Table Text Block]
Schedule of Line of Credit Facilities [Table Text Block]
Earnings (loss) per common share [Table Text Block]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Net Benefit Costs [Table Text Block]
Schedule of Net Benefit Costs [Table Text Block]
Guarantor Obligations, Nature [Axis]
Guarantor Obligations, Nature [Axis]
Guarantor Obligations, Nature [Domain]
Guarantor Obligations, Nature [Domain]
WilTel Guarantee [Member]
Wiltel Guarantee [Member]
Guarantee provided in the event of nonpayment by previously owned communications subsidiary, Williams Communications Group (WilTel)
Fair Value, Measurements, Recurring [Member]
Fair Value, Measurements, Recurring [Member]
Level 1 [Member]
Fair Value, Inputs, Level 1 [Member]
Level 2 [Member]
Fair Value, Inputs, Level 2 [Member]
Measurement Basis [Axis]
Measurement Basis [Axis]
Fair Value, Disclosure Item Amounts [Domain]
Fair Value Measurement [Domain]
Portion at Fair Value Measurement [Member]
Portion at Fair Value Measurement [Member]
Carrying Amount [Member]
Reported Value Measurement [Member]
Fair Value [Member]
Estimate of Fair Value Measurement [Member]
Hedging Designation [Axis]
Hedging Designation [Axis]
Hedging Designation [Domain]
Hedging Designation [Domain]
Designated as Hedging Instrument [Member]
Designated as Hedging Instrument [Member]
Not Designated as Hedging Instrument [Member]
Not Designated as Hedging Instrument [Member]
Disposal Groups, Including Discontinued Operations, Name [Domain]
Former Venezuela Operations [Member]
Former Venezuela Operations [Member]
Certain former venezuela assets
Measured on a recurring basis:
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
ARO Trust investments
Asset Retirement Obligation, Legally Restricted Assets, Fair Value
Energy derivatives assets
Derivative Asset, Fair Value, Gross Asset
Energy derivatives liabilities
Derivative Liability, Fair Value, Gross Liability
Additional disclosures:
Additional Fair Value Elements [Abstract]
Other receivables
Receivables, Fair Value Disclosure
Long-term debt, including current portion
Long-term Debt, Fair Value
Guarantees
Guarantees, Fair Value Disclosure
Fair Value, Level 1 to level 2 Transfers, Amount
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount
Fair Value, Level 2 to level 1 Transfers, Amount
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount
Guarantor Obligations, Maximum Exposure, Undiscounted
Guarantor Obligations, Maximum Exposure, Undiscounted
Contingent Liabilities [Text Block]
Commitments and Contingencies Disclosure [Text Block]
Issuances and Retirements [Abstract]
Debt Instruments [Abstract]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
3.75% Senior Notes Due 2027 [Member]
3.75% Senior Unsecured Notes Due 2027 [Member]
3.75% Senior Unsecured Notes Due 2027 [Member]
4.875% Senior Unsecured Notes due 2023 [Member]
4.875% Senior Unsecured Notes due 2023 [Member]
4.875% Senior Unsecured Notes due 2023 [Member]
7.85% Senior Unsecured Notes Due 2026 [Member]
7.85% Senior Unsecured Notes Due 2026 [Member]
7.85% Senior Unsecured Notes Due 2026 [Member]
6.4% Senior Unsecured Notes due 2016 [Member]
6.4% Senior Unsecured Notes due 2016 [Member]
6.4% Senior Unsecured Notes due 2016 [Member]
7% Senior Unsecured Notes due 2016 [Member]
7% Senior Unsecured Notes due 2016 [Member]
7% Senior Unsecured Notes due 2016 [Member]
6.125% Senior Unsecured Notes due 2022 [Member]
6.125% Senior Unsecured Notes due 2022 [Member]
6.125% Senior Unsecured Notes due 2022 [Member]
4% Senior Unsecured Notes Due 2027 [Member]
4% Senior Unsecured Notes Due 2027 [Member]
4% Senior Unsecured Notes Due 2027 [Member]
5.95% Senior Unsecured Notes due 2017 [Member]
5.95% Senior Unsecured Notes due 2017 [Member]
5.95% Senior Unsecured Notes due 2017 [Member]
7.25% Senior Unsecured Notes due 2017 [Member]
7.25% Senior Unsecured Notes due 2017 [Member]
7.25% Senior Unsecured Notes due 2017 [Member]
Transcontinental Gas Pipe Line Company, LLC [Member]
Transcontinental Gas Pipe Line Company, LLC [Member]
Transcontinental Gas Pipe Line Company, LLC [Member].
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Long-term debt face amount
Debt Instrument, Face Amount
Long-term debt interest rate
Debt Instrument, Interest Rate, Stated Percentage
Other Long-term Debt, Noncurrent
Other Long-term Debt, Noncurrent
Long-term debt retired
Additional interest rate accrued for default of registration rights agreements first period
AdditionalInterestRateAccruedForDefaultOfRegistrationRightsAgreementsFirstPeriod
Represents the additional interest rate accrued for the first 90-day period immediately following the occurrence of default of meeting the terms and conditions of the registration rights agreements.
Additional interest rate accrued for default of registration rights agreements each subsequent period
AdditionalInterestRateAccruedForDefaultOfRegistrationRightsAgreementsEachSubsequentPeriod
Represents the additional interest rate accrued for each subsequent 90-day period following the initial 90-day period of default of meeting the terms and conditions of the registration rights agreements.
Maximum additional interest rate accrued for default of registration rights agreements all periods
MaximumAdditionalInterestRateAccruedForDefaultOfRegistrationRightsAgreementsAllPeriods
Represents the maximum interest rate accrued annually for all periods of default of meeting the terms and conditions of the registration rights agreements.
Premiums paid on early debt retirement
Payment for Debt Extinguishment or Debt Prepayment Cost
Debt Instrument, Term
Debt Instrument, Term
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Results of Operations of Disposal Group [Table Text Block]
Results of Operations of Disposal Group [Table Text Block]
Tabular disclosure of income statement information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.
Allowance for trade accounts and other receivables
Allowance for Doubtful Accounts Receivable, Current
Common stock, shares authorized
Common Stock, Shares Authorized
Common stock, par value of shares authorized
Common Stock, Par or Stated Value Per Share
Common stock, shares issued
Common Stock, Shares, Issued
Treasury stock, shares of common shares
Treasury Stock, Shares
Business Combination Integration Related Costs [Axis]
Business Combination Integration Related Costs [Axis]
Business Combination Integration Related Costs [Axis]
Business Combination Integration Related Costs [Domain]
Business Combination Integration Related Costs [Domain]
Business Combination Integration Related Costs [Domain]
Acquisition and Merger [Member]
Acquisition and Merger [Member]
Acquisition and Merger [Member]
Disposal Group Classification [Axis]
Disposal Group Classification [Axis]
Disposal Group Classification [Domain]
Disposal Group Classification [Domain]
Disposal Group, Not Discontinued Operations [Member]
Disposal Group, Not Discontinued Operations [Member]
Other income (expense) - net [Member]
Other Operating Income (Expense) [Member]
Selling, general, and administrative expenses [Member]
Selling, General and Administrative Expenses [Member]
Operating and maintenance expenses [Member]
Operation and maintenance [Member]
-- None. No documentation exists for this element. --
Selling, general, and administrative expenses and Operating and maintenance expenses [Member]
Selling, general, and administrative expenses and Operating and maintenance expenses [Member]
Selling, general, and administrative expenses and Operating and maintenance expenses [Member]
Interest incurred [Member]
Interest Expense [Member]
Net insurance recoveries - Geismar incident [Member]
Net insurance recoveries - Geismar incident [Member]
Net insurance recoveries - Geismar incident
Service revenues [Member]
Sales Revenue, Services, Net [Member]
Other Nonoperating Income (Expense) [Member]
Other Nonoperating Income (Expense) [Member]
Deferred taxes on equity funds used during construction [Member]
Deferred taxes on equity funds used during construction [Member]
Deferred taxes on equity funds used during construction [Member]
Williams Ngl And Petchem Services [Member]
Williams Ngl And Petchem Services [Member]
Williams NGL and Petchem Services
Business Interruption Loss [Axis]
Business Interruption Loss [Axis]
Business Interruption Loss [Domain]
Business Interruption Loss [Domain]
Amortization of regulatory assets associated with asset retirement obligations
Amortization of Regulatory Asset
Accrual of regulatory liability related to overcollection of certain employee expenses
Accrual Of Regulatory Liability
The expense charged against earnings during the period related to overcollection of certain employee expenses related to rate cases.
Net foreign currency exchange (gains) losses (1)
Foreign Currency Transaction Gain (Loss), before Tax
Gain (Loss) on Disposition of Assets
Loss on sale of Canadian operations (see Note 2)
Gain (Loss) on Contract Termination
Gain on sale of unused pipe
Gain (Loss) on Disposition of Oil and Gas and Timber Property
Insurance recoveries
Insurance Recoveries
Revenue adjustment associated with litigation
Litigation Settlement, Amount Awarded to Other Party
Business combination, merger related costs
Restructuring Charges
Business combination, integration related costs
Business Combination, Integration Related Costs
Strategic alternative costs
Restructuring and Related Cost, Incurred Cost
Project development costs
Costs Incurred, Development Costs
Severance and other related costs
Severance Costs
Approximate percentage of workforce reductions
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent
Allowance for funds used during construction, capitalized cost of equity
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity
Gain on extinguishment of debt
Gain (Loss) on Extinguishment of Debt
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums
Debt Instrument, Unamortized Premium
Debt Instrument, Unamortized Premium
Debt Instrument, Unamortized Discount (Premium), Net
Debt Instrument, Unamortized Discount (Premium), Net
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investment Summarized Financial Position And Results Of Operations [Table Text Block]
Equity Method Investment Summarized Financial Position And Results Of Operations [Table Text Block]
Tabular disclosure of summarized financial position and results of operations of equity method investments.
Reconciliation of Modified EBITDA to Net Income (Loss) from Segments to Consolidated [Table]
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table]
Segment Reporting Information [Line Items]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Reconciliation of Modified EBITDA to Net Income (Loss):
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Abstract]
Modified EBITDA Earnings (Loss)
Modified Ebitda Earnings Loss
Amount of our segment operating performance measure, calculated as Net income (loss) before Provision (benefit) for income taxes; Interest incurred, net of interest capitalized; Equity earnings (losses); Impairment of equity-method investments; Other investing income (loss) – net; Impairment of goodwill;
Depreciation and amortization expense; Accretion expense associated with asset retirement obligations for nonregulated operations.
This measure is further adjusted to include our proportionate share (based on ownership interest) of Modified EBITDA from our equity-method investments calculated consistently with the definition described above.
Accretion expense associated with asset retirement obligations for nonregulated operations
Asset Retirement Obligation Accretion Expense For Nonregulated Operations
Asset Retirement Obligation Accretion Expense For Nonregulated Operations
Depreciation and amortization expenses
Equity earnings (losses)
Income (Loss) from Equity Method Investments
Other investing income (loss) – net
Investment Income, Nonoperating
Proportional Modified EBITDA of equity-method investments
Proportional Modified Ebitda Equity Method Investments
Proportional Modified Ebitda Equity Method Investments
Interest expense
Interest Expense
(Provision) benefit for income taxes
Net income (loss)
Stockholders' Equity [Text Block]
Stockholders' Equity Note Disclosure [Text Block]
Segment Disclosures [Text Block]
Segment Reporting Disclosure [Text Block]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Other Income and Expenses [Text Block]
Other Income and Other Expense Disclosure [Text Block]
Divestitures [Text Block]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Northeast G And P [Member]
Northeast G And P [Member]
-- None. No documentation exists for this element. --
Ranch Westex JV LLC [Member]
Ranch Westex JV LLC [Member]
Ranch Westex JV LLC
Gulfstream Natural Gas System, LLC [Member]
Other investing income (loss) - net [Member]
Investment Income (Expense) [Member]
Equity earnings (losses) [Member]
Income Loss From Equity Method Investment [Member]
Income Loss From Equity Method Investment [Member] as a location in the income statement dimension
Impairment Of equity-method investments [Member]
Proceeds from Sale of Equity Method Investments
Gain from sale of an equity-method investment interest
Investing income, nonoperating
Investments, Fair Value Disclosure
Notes receivable, fair value disclosure
Notes Receivable, Fair Value Disclosure
Equity-method investment debt
Long-term Debt, Gross
Equity Method Investment, Summarized Financial Information [Abstract]
Equity Method Investment, Summarized Financial Information [Abstract]
Gross revenue
Equity Method Investment, Summarized Financial Information, Revenue
Operating income
Equity Method Investment Summarized Financial Information Operating Income
Equity method investment summarized financial information operating income.
Net income
Equity Method Investment, Summarized Financial Information, Net Income (Loss)
Fair Value Inputs, Discount Rate
Segment assets:
Segment Reporting Information, Additional Information [Abstract]
Total assets
Stock Issued During Period, Shares, New Issues
Stock Issued During Period, Shares, New Issues
Equity Issuance, Price Per Share
Shares Issued, Price Per Share
Proceeds from Issuance of Common Stock
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current:
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal
Current Federal Tax Expense (Benefit)
State
Current State and Local Tax Expense (Benefit)
Foreign
Current Foreign Tax Expense (Benefit)
Total
Current Income Tax Expense (Benefit)
Deferred:
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal
Deferred Federal Income Tax Expense (Benefit)
State
Deferred State and Local Income Tax Expense (Benefit)
Foreign
Deferred Foreign Income Tax Expense (Benefit)
Total
Provision (benefit) for income taxes
Provision Related To Increase In Deferred State Income Tax Rate
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount
Valuation Allowance, Deferred Tax Asset, Decrease Amount
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Income Tax Contingency [Table]
Income Tax Contingency [Table]
Income Tax Contingency [Line Items]
Income Tax Contingency [Line Items]
Schedule of Variable Interest Entities [Table Text Block]
Schedule of Variable Interest Entities [Table Text Block]
Income Statement [Abstract]
Revenues:
Revenues [Abstract]
Total revenues
Costs and expenses:
Costs and Expenses [Abstract]
Product costs
Cost of Purchased Oil and Gas
Operating and maintenance expenses
Operating Costs and Expenses
Depreciation and amortization expenses
Selling, general, and administrative expenses
Selling, General and Administrative Expense
Impairment of certain assets (Note 11)
Other (income) expense – net
Other Operating Income (Expense), Net
Total costs and expenses
Costs and Expenses
Operating income (loss)
Operating Income (Loss)
Impairment of equity-method investments (Note 11)
Other investing income (loss) – net (Note 4)
Interest incurred
Interest Costs Incurred
Interest capitalized
Interest Costs Capitalized Adjustment
Other income (expense) – net
Other Nonoperating Income (Expense)
Provision (benefit) for income taxes
Less: Net income (loss) attributable to noncontrolling interests
Net Income (Loss) Attributable to Noncontrolling Interest
Net income (loss) attributable to The Williams Companies, Inc.
Net Income (Loss) Attributable to Parent
Amounts attributable to The Williams Companies, Inc.:
Income Amounts Attributable to Parent, Disclosures [Abstract]
Basic earnings (loss) per common share:
Earnings Per Share, Basic [Abstract]
Net income (loss)
Earnings Per Share, Basic
Weighted-average shares (thousands)
Weighted Average Number of Shares Outstanding, Basic
Diluted earnings (loss) per common share:
Earnings Per Share, Diluted [Abstract]
Net income (loss)
Earnings Per Share, Diluted
Weighted-average shares (thousands)
Weighted Average Number of Shares Outstanding, Diluted
Cash dividends declared per common share
Common Stock, Dividends, Per Share, Declared
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Award Type [Axis]
Award Type [Axis]
Equity Award [Domain]
Equity Award [Domain]
Nonvested restricted stock units [Member]
Restricted Stock [Member]
Stock Options [Member]
Employee Stock Option [Member]
Earnings Per Share Table [Line Items]
Earnings Per Share Table [Line Items]
Net income (loss) attributable to The Williams Companies, Inc. available to common stockholders for basic and diluted earnings (loss) per common share
Basic weighted-average shares
Effect of dilutive securities:
Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements
Diluted weighted-average shares
Earnings (loss) per common share:
Earnings Per Share, Basic and Diluted [Abstract]
Basic
Diluted
Fair Value Assets and Liabilities Measured On Recurring Basis [Table Text Block]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Fair Value Measurements, Nonrecurring [Table Text Block]
Fair Value Measurements, Nonrecurring [Table Text Block]
General, Description of Business, and Basis of Presentation [Text Block]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Investing Activities [Text Block]
Investment [Text Block]