Proceeds received for divested assets Proceeds received for divested assets Proceeds from Divestiture of Businesses Oil and gas Oil and gas Oil And Gas Segment [Member] This member represents the oil and gas segment. Statistical Measurement [Domain] Statistical Measurement [Domain] COSTS AND OTHER DEDUCTIONS Costs and Other Deductions [Abstract] Operating lease, liability, current, statement of financial position Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Collateral received netted against derivative assets Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset Award Timing Predetermined Award Timing Predetermined [Flag] Entity File Number Entity File Number Additional Paid-in Capital Additional Paid-in Capital [Member] Closing Adjustments Disposal Group, Including Discontinued Operation, Closing Adjustments [Abstract] Disposal Group, Including Discontinued Operation, Closing Adjustments Income from equity investments and other Income (Loss) from Equity Method Investments Tabular List, Table Tabular List [Table Text Block] PER COMMON SHARE, BASIC Basic earnings (loss) per common share Earnings Per Share, Basic [Abstract] Operating Activities [Axis] Operating Activities [Axis] Schedule of Discontinued Operations, Net of Income Taxes Disposal Groups, Including Discontinued Operations [Table Text Block] 3.000% senior notes due 2027 Senior Notes 3.000 Percent Due 2027 [Member] Senior Notes 3.000 Percent Due 2027 [Member] Remediation costs, period Site Contingency, Disbursement Period, Estimate, Accrued 7.200% debentures due 2029 Debentures 7.200 Percent Due 2029 [Member] Debentures 7.200 Percent Due 2029 [Member] Position [Axis] Position [Axis] Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Outstanding warrants (in shares) Class of Warrant or Right, Outstanding Measurement Basis [Axis] Measurement Basis [Axis] Net income attributable to common stockholders—basic (in dollars per share) Basic income per common share (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Commodity inventory Inventory, Gross Decrease in accounts payable and accrued liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Financing cash flow from continuing operations Cash Provided by (Used in) Financing Activity, Continuing Operation Dividends on preferred stock (in dollars per share) Preferred Stock, Dividends Per Share, Declared REVENUE Revenue from Contract with Customer [Text Block] Diamond Alkali Superfund Site - Operable Unit Four Diamond Alkali Superfund Site - Operable Unit Four [Member] Diamond Alkali Superfund Site - Operable Unit Four Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Restricted cash and restricted cash equivalents included in other long-term assets Restricted Cash Equivalent, Noncurrent Other comprehensive income (loss), net of tax Other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax Schedule of Industry Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Collateral paid netted against derivative liabilities Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset Materials and supplies Other Inventory, Supplies, Gross Ongoing Operations Continuing Operations [Member] Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Pension and postretirement obligations Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent Total current tax expense Current Income Tax Expense (Benefit) Other long-term assets Other Assets, Miscellaneous, Noncurrent Adjustment to Compensation, Amount Adjustment to Compensation Amount Federal Federal Income Tax Expense (Benefit), Continuing Operations Employee Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Long-Term Debt Repayments [Roll Forward] Long-Term Debt Repayments [Roll Forward] Long-Term Debt Repayments Proceeds from sales of assets, net Proceeds from Sale of Productive Assets 6.600% senior notes due 2046 Senior Notes 6.600 Percent Due 2046 [Member] Senior Notes 6.600 Percent Due 2046 [Member] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Environmental remediation additional loss range Environmental Remediation Possible Additional Loss Beyond Accruals This element represents the reasonably possible additional loss that may be incurred beyond the recorded liabilities for environmental remediation. Dividends on common stock Dividends, Common Stock, Cash Total stockholders' equity Equity, Attributable to Parent Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] 5.200% senior notes due 2029 Senior Notes 5.200 Percent Due 2029 [Member] Senior Notes 5.200 Percent Due 2029 Insider Trading Policies and Procedures [Line Items] Common stock, authorized (in shares) Common Stock, Shares Authorized Hedging Designation [Domain] Hedging Designation [Domain] TOTAL LIABILITIES AND EQUITY Liabilities and Equity Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] 3.500% senior notes due 2029 Senior Notes 3.500 Percent Due 2029 [Member] Senior Notes 3.500 Percent Due 2029 [Member] 3.200% senior notes due 2026 Senior Notes 3.200 Percent Due 2026 [Member] Senior Notes 3.200 Percent Due 2026 [Member] Cash, cash equivalents, restricted cash and restricted cash equivalents — beginning of period Cash, cash equivalents, restricted cash and restricted cash equivalents — end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation LIABILITIES Liabilities and Equity [Abstract] OTHER ITEMS Other Nonoperating Income (Expense) [Abstract] Cover page. Cover [Abstract] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] High end of range Maximum [Member] Less: Net income attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest PP&E Additions Segment, Expenditure, Addition to Long-Lived Assets Accounting Policies [Abstract] Accounting Policies [Abstract] 7.875% senior notes due 2031 Senior Notes 7.875 Percent Due 2031 [Member] Senior Notes 7.875 Percent Due 2031 [Member] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Long-term Debt Debt Instrument [Line Items] Treasury Stock Treasury Stock, Common [Member] Income from continuing operations Income from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Total Revenues, Operating and Nonoperating The sum of operating revenues and nonoperating revenues. Operating revenues are the aggregate revenue recognized during the period derived from goods sold, services rendered, or other activities that constitute an entity's earning process. Nonoperating revenues are the aggregate revenue recognized during the period derived from ancillary business-related activities that are not considered part of the normal operations of the business. Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Floor price Derivative, Floor Price 0.000% loan due 2039 (CAD denominated) 0.000 Percent Loan Due 2039 [Member] 0.000 Percent Loan Due 2039 Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS Net Income (Loss) Attributable to Common Stockholders Net Income (Loss) Attributable to Common Stockholders 7.250% debentures due 2096 Debentures 7.250 Percent Due 2096 [Member] Debentures 7.250 Percent Due 2096 [Member] Notional volume (mmbls/day) Outstanding net volumes on derivatives not designated as hedges (mmbls/bcf) Derivative, Nonmonetary Notional Amount, Volume 8.500% senior notes due 2027 Senior Notes 8.500 Percent Due 2027 [Member] Senior Notes 8.500 Percent Due 2027 Income from continuing operations before income taxes Income before income taxes Income from continuing operations before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Non-current liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent Entity Shell Company Entity Shell Company Environmental Remediation Site [Domain] Environmental Remediation Site [Domain] Other liabilities Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Site Contingency [Table] Site Contingency [Table] Taxes other than on income Accrual for Taxes Other than Income Taxes, Current Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Operating segments Operating Segments [Member] Schedule of Supplemental Cash Flows Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] Gains (losses) on derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Statement of Cash Flows Data Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Less: Comprehensive income attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Award Timing MNPI Considered Award Timing MNPI Considered [Flag] 4.300% senior notes due 2039 Senior Notes 4.300 Percent Due 2039 [Member] Senior Notes 4.300 Percent Due 2039 [Member] Comprehensive income attributable to preferred and common stockholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent 4.400% senior notes due 2046 Senior Notes 4.400 Percent Due 2046 [Member] Senior Notes 4.400 Percent Due 2046 [Member] Disposal Group Name [Domain] Disposal Group Name [Domain] Name Measure Name Potential accrued interest Loss Contingency, Potential Income Tax Expense (Benefit), Accrued Interest Loss Contingency, Potential Income Tax Expense (Benefit), Accrued Interest Long term tax liabilities Accrued Income Taxes, Noncurrent Secured Debt Secured Debt [Member] Operating lease liabilities Operating Lease, Liability, Current Class of Stock [Line Items] Class of Stock [Line Items] Deferred income taxes, net Deferred Income Tax Liabilities, Net Document Fiscal Period Focus Document Fiscal Period Focus Gross and net fair values of outstanding derivatives Derivatives, Fair Value [Line Items] Income from equity investments and other Disposal Group, Including Discontinued Operation, Income From Equity Investments and Other Disposal Group, Including Discontinued Operation, Income From Equity Investments and Other Award Timing Method Award Timing Method [Text Block] Litigation Case [Domain] Litigation Case [Domain] Income from continuing operations—basic (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Marketing Derivatives Marketing Derivatives [Member] Marketing Derivatives [Member] Award Type Award Type [Axis] Netting and collateral, liability Derivative Liability, Subject to Master Netting Arrangement, Gross Asset and Collateral, Right to Reclaim Cash, Offset Net book value of debt Long-Term Debt Legal Entity [Axis] Legal Entity [Axis] TOTAL ASSETS Total Assets Assets Strike Price One Strike Price One [Member] Strike Price One Investment, Name [Domain] Investment, Name [Domain] Trading Symbol Trading Symbol CASH EQUIVALENTS AND RESTRICTED CASH EQUIVALENTS Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Geographical [Domain] Geographical [Domain] Alden Leeds Alden Leeds [Member] Alden Leeds Environmental Remediation Obligations [Abstract] Environmental Remediation Obligations [Abstract] Entity Address, City or Town Entity Address, City or Town CASH FLOW FROM OPERATING ACTIVITIES Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Environmental reserves, range between zero to $ one million site category Environmental Reserves Range Between Zero to One Million Threshold Value Site Category This item represents the reserve, in which a site's reserve must range between zero and one million. Other segment expenses Segment Reporting, Other Segment Item, Amount Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Limited partner interest Limited Liability Company LLC Or Limited Partnership LP Limited Partner Unit Ownership Interest Limited Liability Company LLC Or Limited Partnership LP Limited Partner Unit Ownership Interest BlackRock, Inc. BlackRock, Inc. [Member] BlackRock, Inc. Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Emerging Growth Company Entity Emerging Growth Company Potential cash tax Loss Contingency, Potential Income Tax Expense (Benefit) Loss Contingency, Potential Income Tax Expense (Benefit) Dividends on common stock (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Diamond Alkali Superfund Site - Operable Unit Two Diamond Alkali Superfund Site - Operable Unit Two [Member] Diamond Alkali Superfund Site - Operable Unit Two Level 2 Fair Value, Inputs, Level 2 [Member] Debt issuance costs Debt Issuance Costs, Net Restricted cash and restricted cash equivalents included in other current assets Restricted Cash and Cash Equivalent Investments in unconsolidated entities Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Schedule of Components of Income Tax Expense Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] PEO PEO [Member] Schedule of Revenue from Customers by Segment, Product, and Geographical Area Disaggregation of Revenue [Table Text Block] Site contingency, number of operating units Site Contingency, Number Of Operating Units Site Contingency, Number Of Operating Units Current Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Other (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Income tax payable Accrued Income Taxes, Current United States UNITED STATES Changes in operating assets and liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Options exercised Stock Issued During Period, Value, Stock Options Exercised Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Interest, dividends and other income Disposal Group, Including Discontinued Operation, Interest, Dividends And Other Income Disposal Group, Including Discontinued Operation, Interest, Dividends And Other Income Debentures Debentures [Member] Debentures [Member] Retained Earnings Retained Earnings [Member] Limited partnership number of shares transferred (in shares) Limited Liability Company (LLC) Or Limited Partnership (LP), Number Of Shares Transferred Limited Liability Company (LLC) Or Limited Partnership (LP), Number Of Shares Transferred Discontinued operations—diluted (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Schedule of Accrued and Other Long-Term Liabilities Schedule of Accrued Liabilities [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Restatement Determination Date Restatement Determination Date Cash, cash equivalents, restricted cash and restricted cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Statement of Operations Data Income Statement [Abstract] Total net fair value, asset Derivative Asset Income tax expense Total income tax expense Income tax expense Income Tax Expense (Benefit) Schedule of Net Sales Related to the Outstanding Commodity Derivative Instruments Schedule of Derivative Instruments Included in Trading Activities [Table Text Block] Preferred stock, issued (in shares) Preferred Stock, Shares Issued Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Products and Services [Domain] Product and Service [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Property Plant and Equipment, Gross Property, Plant and Equipment, Gross Long-term Purchase Commitment [Table] Long-Term Purchase Commitment [Table] Environmental reserves, exceeding $ ten million, threshold value Environmental Reserves Exceeding Ten Million Threshold Value, Site Category This item represents the amount which a site's reserve must exceed, which is ten million. Income from continuing operations—diluted (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share NET INCOME Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Discontinued Operations, Held-for-sale Discontinued Operations, Held-for-Sale [Member] Business Combination [Table] Business Combination [Table] Pension and postretirement losses Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Increase in other current assets Increase (Decrease) in Other Current Assets Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] ACQUISITIONS, DIVESTITURES AND OTHER TRANSACTIONS Business Combinations, Asset Acquisitions Dispositions and Divestitures Other Disclosure [Text Block] Description of significant business acquisitions (or series of individually immaterial business combinations or asset acquisitions) planned, initiated, or completed during the period, including background, timing, and allocation of acquisition costs. Includes description of significant business or asset dispositions completed during the period, including background, timing and disclosures for discontinued operations, if applicable. Also includes description of other applicable transactions. This element may be used as a single block of text to encapsulate all disclosures (including data and tables) regarding business combinations, asset acquisitions, business or asset dispositions, including leverage buyout transactions and other transactions. Stretch of lower passaic river requiring remedial actions River Stretch Which Require Remedial Actions Represents the stretch of river which require remedial actions. Accumulated depreciation, depletion and amortization Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] 6.125% senior notes due 2031 Senior Notes 6.125 Percent Due 2031 [Member] Senior Notes 6.125 Percent Due 2031 Accrued liabilities Total Accrued Liabilities, Current Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Investing cash flow from discontinued operations Cash Provided by (Used in) Investing Activity, Discontinued Operation Number of companies excluded from settlement Number Of Companies Excluded From Settlement Number Of Companies Excluded From Settlement CASH FLOW FROM INVESTING ACTIVITIES Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Net cash provided by operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Acquisition-related costs Disposal Group, Including Discontinued Operation, Acquisition Related Costs Disposal Group, Including Discontinued Operation, Acquisition Related Costs Debt term Debt Instrument, Term Noncontrolling interest contributions, net Noncontrolling Interest, Period Increase (Decrease) Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Subsequent Event Subsequent Event [Member] Equity investments and other, net Payments for (Proceeds from) Equity Investments and Other, Net Payments for (Proceeds from) Equity Investments and Other, Net Gas Natural Gas [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] PEO Total Compensation Amount PEO Total Compensation Amount Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Environmental Exit Cost [Table] Environmental Exit Cost [Table] Commodity contract derivative liability, gross Derivative Liability, Subject to Master Netting Arrangement, before Offset Federal Deferred Federal Income Tax Expense (Benefit) Equity Components [Axis] Equity Components [Axis] International Non-US [Member] 5.550% senior notes due 2034 Senior Notes 5.550 Percent Due 2034 [Member] Senior Notes 5.550 Percent Due 2034 6.375% senior notes due 2028 Senior Notes 6.375 Percent Due 2028 [Member] Senior Notes 6.375 Percent Due 2028 7.500% senior notes due 2031 Senior Notes 7.500 Percent Due 2031 [Member] Senior Notes 7.500 Percent Due 2031 [Member] Natural gas commodity contracts Natural Gas Per Cubic Foot [Member] Information pertaining to commodity derivative contracts for the natural gas. Financing cash flow from discontinued operations Cash Provided by (Used in) Financing Activity, Discontinued Operation Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Total Accounts Payable and Accrued Liabilities, Noncurrent Closed or Non-operated Sites Closed Or Non Operated Entity Sites [Member] This element indicates sites not listed or proposed for listing by the U.S. Environmental Protection Agency on the CERCLA National Priorities List (NPL), which have been closed or are not otherwise currently operated by the entity. Clean up costs percentage Environmental Exit Costs, Clean Up Costs Percentage Environmental Exit Costs, Clean Up Costs Percentage 7.500% debentures due 2096 Debentures 7.500 Percent Due 2096 [Member] Debentures 7.500 Percent Due 2096 [Member] Summary of Significant Accounting Policies [Table] Summary of Significant Accounting Policies [Table] The table describes the detailed summary of significant accounting policies. Number of reportable segments Number of Reportable Segments Cash dividends paid on common and preferred stock Payments of Ordinary Dividends Income before income taxes Disposal Group, Including Discontinued Operation, Income (Loss) Before Income Taxes Disposal Group, Including Discontinued Operation, Income (Loss) Before Income Taxes Unamortized premium, net Debt Instrument, Unamortized Discount (Premium), Net Net sales (losses) Sales [Member] GENERAL Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] SUPPLEMENTAL CASH FLOW INFORMATION Supplemental Cash Flow Information [Abstract] Exploration expense Exploration Expense Other Performance Measure, Amount Other Performance Measure, Amount Schedule of Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Entity Address, State or Province Entity Address, State or Province Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Security, Excluded EPS Calculation [Table] Non-current assets held for sale Disposal Group, Including Discontinued Operation, Assets, Noncurrent Total current liabilities Liabilities, Current Total income tax expense Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract] Capitalized interest Interest Costs Capitalized Adjustment Income tax refunds received Tentative cash tax refund Proceeds from Income Tax Refunds Derivative Instrument [Axis] Derivative Instrument [Axis] Individual: Individual [Axis] Property, plant and equipment, gross Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Costs and other deductions Disposal Group Including Discontinued Operation Costs And Other Deductions [Abstract] Disposal Group Including Discontinued Operation Costs And Other Deductions [Abstract] 4.200% senior notes due 2048 Senior Notes 4.200 Percent Due 2048 [Member] Senior Notes 4.200 Percent Due 2048 [Member] Number of sites Number of Sites Environmental Remediation Sites Number Represents the number of remediation sites of the entity, as aggregated by type of environmental remediation site. Other current assets Other Assets, Current Entities [Table] Entities [Table] Entity [Domain] Entity [Domain] Investments in unconsolidated entities Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Net cash provided (used) by investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Oil and gas lease operating expense Oil and Gas, Result of Operation, Expense Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Purchases of assets, businesses and equity investments, net Payments to Acquire Assets, Investing Activities Loss on sale of business Gain (Loss) on Disposition of Business Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activity Contributions from noncontrolling interest Proceeds from Noncontrolling Interests Document Fiscal Year Focus Document Fiscal Year Focus Operating lease assets Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Payments of debt Repayments of long-term debt Repayments of Long-Term Debt Worldwide effective tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Acquisition-related costs Business Combination, Acquisition-Related Cost, Expense Taxes other than on income Taxes, Miscellaneous Non-voting limited partner interest Limited Liability Company LLC Or Limited Partnership LP Non Voting Limited Partner Unit Interest Percentage Limited Liability Company LLC Or Limited Partnership LP Non Voting Limited Partner Unit Interest Percentage REVENUE Revenue from Contract with Customer [Policy Text Block] Equity method investment commitments Equity Method Investments, Commitment Equity Method Investments, Commitment Percent of reserve to be funded over the next three to four years Percent Of Environmental Reserves To Be Funded In Three To Four Years Percent of environmental reserves to be funded by the entity in the next three to four years. Other operating and non-operating expense Disposal Group, Including Discontinued Operation, Other Operating And Non-Operating Expense Disposal Group, Including Discontinued Operation, Other Operating And Non-Operating Expense SEGMENTS Segment Reporting Disclosure [Text Block] Not Designated as Hedging Instruments Not Designated as Hedging Instrument [Member] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Current maturities of long-term debt Long-Term Debt and Lease Obligation, Current Federal Current Federal Tax Expense (Benefit) Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] 4.400% senior notes due 2049 Senior Notes 4.400 Percent Due 2049 [Member] Senior Notes 4.400 Percent Due 2049 [Member] Ownership [Domain] Ownership [Domain] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Chemical cost of sales Disposal Group, Including Discontinued Operation, Costs of Goods Sold General and administrative expense Selling, General and Administrative Expense Depreciation, depletion and amortization Depreciation, depletion and amortization of assets Depreciation, Depletion and Amortization Total non-current assets Other Assets, Noncurrent Accrued interest payable Interest Payable, Current Entity Central Index Key Entity Central Index Key PEO Name PEO Name Schedule of Maturities of Long-Term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Net sales Net sales Revenues Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount State and Local State and Local Income Tax Expense (Benefit), Continuing Operations Asset impairments and other charges Pretax Asset Impairment and Related Items The pre-tax charge against earnings resulting from the write down of long lived assets due to the difference between the carrying value and lower fair value, and related items. Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Netting, asset Derivative Asset, Subject to Master Netting Arrangement, Gross Liability and Collateral, Obligation to Return Cash, Offset Exercise price of warrant (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Segments [Axis] Segments [Axis] Schedule of Gross and Net Fair Values of Outstanding Derivatives Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Oil Crude Oil, Condensate, and Natural Gas Liquids (NGL) [Member] Environmental reserves, range between zero to $ one million site category, number of sites Environmental Reserves Range Between Zero to One Million Site Category, Number of Sites This item represents the number of sites with each site's reserves in between zero to one million. Exercise Price Award Exercise Price Less: current maturities of long-term debt Long-term Debt, Current Maturities Excluding Finance Leases Long-term Debt, Current Maturities Excluding Finance Leases Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Class of Stock [Domain] Class of Stock [Domain] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Foreign Foreign Income Tax Expense (Benefit), Continuing Operations 7.200% senior debentures due 2028 Senior Debentures 7.200 Percent Due 2028 [Member] Senior Debentures 7.200 Percent Due 2028 [Member] ASSETS Assets [Abstract] Long-term debt, net Long-Term Debt, Excluding Current Maturities Underlying Security Market Price Change Underlying Security Market Price Change, Percent Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Debt Instrument [Axis] Debt Instrument [Axis] Cash and cash equivalents included in assets held for sale Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents Business Combination [Line Items] Business Combination [Line Items] Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt EQUITY Equity, Attributable to Parent [Abstract] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Environmental loss contingency, current, statement of financial position Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration] Purchase of treasury stock Treasury Stock, Value, Acquired, Cost Method Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Debt instrument interest rate stated percentage Debt Instrument, Interest Rate, Stated Percentage Investment, Name [Axis] Investment, Name [Axis] Operating lease liabilities Operating Lease, Liability, Noncurrent Permian Basin, Royalty and Mineral Interests and Processing Plants Permian Basin, Royalty and Mineral Interests and Processing Plants [Member] Permian Basin, Royalty and Mineral Interests and Processing Plants Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Ownership [Axis] Ownership [Axis] DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] Commodity contract derivative asset, gross Derivative Asset, Subject to Master Netting Arrangement, before Offset Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Other expense, net Disposal Group, Including Discontinued Operation, Other Expense, Net Disposal Group, Including Discontinued Operation, Other Expense, Net Midstream and marketing Midstream And Marketing [Member] Represents company's midstream and marketing segment, used for segment reporting purposes. Fair Value as of Grant Date Award Grant Date Fair Value Entity Registrant Name Entity Registrant Name Amount from exercise of warrants Proceeds from Warrant Exercises Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Schedule of Long-term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Document Quarterly Report Document Quarterly Report Total costs and other deductions Disposal Group, Including Discontinued Operation, Costs And Other Deductions, Net Disposal Group, Including Discontinued Operation, Costs And Other Deductions, Net Fair value of long-term debt Long-Term Debt, Fair Value Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Number of operating segments Number of Operating Segments Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] 7.950% debentures due 2029 Debentures 7.950 Percent Due 2029 [Member] Debentures 7.950 Percent Due 2029 [Member] Other Operating Segments And Intersegment Eliminations Other Operating Segments And Intersegment Eliminations [Member] Other Operating Segments And Intersegment Eliminations Variable Rate Bonds Variable Rate Bonds [Member] Variable Rate Bonds [Member] Summary of Significant Accounting Policies [Line Items] Summary of Significant Accounting Policies [Line Items] These concepts are used to disclose supplemental cash flow information. 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Notes 6.450 Percent Due 2036 [Member] 6.625% debentures due 2028 Debentures 6.625 Percent Due 2028 [Member] Debentures 6.625 Percent Due 2028 [Member] Total current and non-current Remediation Balance Accrual for Environmental Loss Contingencies Fair Value Measurement [Domain] Fair Value Measurement [Domain] Total debt and finance leases Long-Term Debt and Lease Obligation, Including Current Maturities Senior Notes Senior Notes [Member] Preferred stock, at $1.00 per share par value, issued shares: 2026 — $84,897 and 2025 —$84,897 Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable, Current Tronox Settlement Tronox Settlement [Member] Tronox Settlement Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Discontinued Operations Discontinued Operations [Member] Change in capital accrual Increase (Decrease) In Capital Accrual Increase (Decrease) In Capital Accrual Net income, 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and other, net Gain (Loss) on Disposition of Assets Total Costs and Other Deductions Total costs of sales, operating expenses, and nonoperating expenses for the period. One-time non-cash tax benefit as a result of a legal entity reorganization Income Tax Expense (Benefit) from Reorganization Income Tax Expense (Benefit) from Reorganization 7.000% debentures due 2027 Debentures 7.000 Percent Due 2027 [Member] Debentures 7.000 Percent Due 2027 [Member] Income before income taxes and other items Income (Loss) From Continuing Operations Before Nonoperating Income (Expense), Equity Method Investments, Income Taxes, Noncontrolling Interest Income (Loss) From Continuing Operations Before Nonoperating Income (Expense), Equity Method Investments, Income Taxes, Noncontrolling Interest Interest, dividends and other income Interest, Dividends and Other Income Income derived from investments and income not otherwise specified in the income statement. Interest income represents earnings which reflect the time value of money or transactions in which the payments are for the use or forbearance of money. Dividend income represents a distribution of earnings to shareholders by investee companies. Net income attributable to common stockholders—diluted (in dollars per share) Diluted income per common share (in dollars per share) Earnings Per Share, Diluted 4.100% senior notes due 2047 Senior Notes 4.100 Percent Due 2047 [Member] Senior Notes 4.100 Percent Due 2047 [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Trade receivables, net of reserves Accounts Receivable, after Allowance for Credit Loss, Current Title of 12(b) Security Title of 12(b) Security Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Deferred credit and other liabilities Accrued Environmental Loss Contingencies, Noncurrent Dividends on preferred stock Dividends, Preferred Stock, Cash Other comprehensive income (loss) items: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Treasury stock, shares (in shares) Treasury Stock, Common, Shares Consolidation Items [Domain] Consolidation Items [Domain] Total Nonoperating Income (Expense) Discontinued operations, net of taxes Income from discontinued operations, net of tax Discontinued operations, net of taxes Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest 4.625% senior notes due 2045 Senior Notes 4.625 Percent Due 2045 [Member] Senior Notes 4.625 Percent Due 2045 [Member] NPL Sites National Priorities List Sites [Member] This element indicates sites listed or proposed for listing by the U.S. Environmental Protection Agency on the CERCLA National Priorities List (NPL). Minimum period of expending second half of environmental reserves Minimum Period of Expending Second Half of Environmental Reserves Minimum Period of Expending Second Half of Environmental Reserves Less: Preferred stock dividends Less: Preferred stock dividends Preferred Stock Dividends and Other Adjustments Treasury stock purchases (in shares) Treasury Stock, Shares, Acquired Exercise of warrants (in shares) Class Of Warrant Or Right, Exercised Class Of Warrant Or Right, Exercised Income tax payments Income Taxes Paid, Net ENVIRONMENTAL LIABILITIES AND EXPENDITURES Environmental Loss Contingency Disclosure [Text Block] Third-Party Sites Third Party Sites [Member] This element indicates sites not listed or proposed for listing by the U.S. Environmental Protection Agency on the CERCLA National Priorities List (NPL), which are operated by third parties. 4.500% senior notes due 2044 Senior Notes 4.500 Percent Due 2044 [Member] Senior Notes 4.500 Percent Due 2044 [Member] Award Timing Disclosures [Line Items] Less: Net income allocated to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted NGL Natural Gas Liquids (NGL) [Member] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Current assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Long-term debt, gross Total borrowings at face value, beginning balance Total borrowings at face value, ending balance Long-Term Debt, Gross Losses on sales of assets and other, net Gain (Loss) On Disposition Of Assets And Other, Net Gain (Loss) On Disposition Of Assets And Other, Net Payroll and related expenses Employee-related Liabilities, Current Total property, plant and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Interest amount Payments For Legal Settlements, Interest Amount Payments For Legal Settlements, Interest Amount Payments for settlement Payments for Legal Settlements EARNINGS PER SHARE AND EQUITY Equity [Text Block] State and Local Deferred State and Local Income Tax Expense (Benefit) 7.125% debentures due 2027 Debentures 7.125 Percent Due 2027 [Member] Debentures 7.125 Percent Due 2027 [Member] Gain (loss) on derivatives Gain (Loss) on Derivative Instruments, Net, Pretax Eliminations Intersegment Eliminations [Member] Expiration Date Trading Arrangement Expiration Date Issuance of common stock and other, net of cancellations Issuance of Common Stock and Other, Net The change in equity due to the value of new stock issued during the period (net of issuance costs), as well as the value of stock issued during the period as a result of the exercise of stock options and other equity transactions. Two-year term loan due 2026 (5.475% as of December 31, 2025) Two Year Term Loan Due 2026 [Member] Two Year Term Loan Due 2026 Discontinued operations—basic (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share Warrants to Purchase Common Stock, $0.20 par value Warrants To Purchase Common Stock [Member] Warrants To Purchase Common Stock Property, Plant and Equipment, Net Property, Plant and Equipment, Net Segment Information Segment Reporting Information [Line Items] 7.150% debentures due 2028 Debentures 7.150 Percent Due 2028 [Member] Debentures 7.150 Percent Due 2028 [Member] All other revenues Revenue Not from Contract with Customer Cash purchase price Disposal Group, Including Discontinued Operation, Cash Purchase Price Disposal Group, Including Discontinued Operation, Cash Purchase Price Purchases of treasury stock Payments for Repurchase of Common Stock Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] INVENTORIES Inventory, Policy [Policy Text Block] Entity Current Reporting Status Entity Current Reporting Status Stretch of lower passaic river not covered by remedial actions River Stretch Which May Require Remedial Actions Represents the stretch of river which may be covered by remedial actions. Derivative [Line Items] Outstanding commodity derivatives contracts not designated as hedging instruments Derivative [Line Items] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Period of expending 30 percent of environmental reserves Period of Expending 30 Percent of Environmental Reserves Period of Expending 30 Percent of Environmental Reserves Consolidated Entities [Domain] Consolidated Entities [Domain] Retained earnings Retained Earnings (Accumulated Deficit) Adjustments to reconcile net income to net cash provided by operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Balance Sheet Data Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive Category [Axis] 7.950% senior notes due 2039 Senior Notes 7.950 Percent Due 2039 [Member] Senior Notes 7.950 Percent Due 2039 [Member] Asset retirement obligations Asset Retirement Obligations, Noncurrent Debt repaid Total repayments Repayments of Debt Current finance leases Less: current finance leases Finance Lease, Liability, Current Current Fiscal Year End Date Current Fiscal Year End Date Class of Stock [Axis] Class of Stock [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] OxyChem OxyChem [Member] OxyChem Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities, Current Statement [Table] Statement [Table] Total net fair value, liability Derivative Liability Deferred income tax provision (benefit) Total deferred tax benefit (expense) Deferred Income Tax Expense (Benefit) Environmental reserves, exceeding $ ten million, threshold value, number of sites Environmental Reserves Exceeding Ten Million Site Category, Number of Sites This item represents the number of sites with each site's reserves exceeding ten million. CASH FLOW FROM FINANCING ACTIVITIES Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Transportation and gathering expense Transportation And Gathering Expense Transportation And Gathering Expense Schedule of Current and Non-Current Environmental Remediation Reserves by Categories of Sites Schedule of Environmental Loss Contingencies by Site [Table Text Block] Long-term finance leases Finance Lease, Liability, Noncurrent Schedule of Reconciliation of Revenue from Customers to Total Net Sales Reconciliation Of Revenue From Customers And Other Revenue To Total Revenue [Table Text Block] The disclosure of reconciliation of revenue from customers and other revenue to total revenue. Environmental remediation reserves Site Contingency [Line Items] Total Cash Purchase Price Disposal Group, Including Discontinued Operation, Cash Purchase Price, Net Disposal Group, Including Discontinued Operation, Cash Purchase Price, Net Antidilutive securities (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Total deferred credits and other liabilities Deferred Credits and Other Liabilities, Noncurrent Treasury stock: 2026 — 229,693,951 shares and 2025 — 228,311,184 shares Treasury Stock, Common, Value Termination Date Trading Arrangement Termination Date Environmental Exit Cost [Line Items] Environmental Exit Cost [Line Items] Net cash used by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Non-voting general partner interest Limited Liability Company LLC Or Limited Partnership L P Non Voting General Partner Unit Interest Percentage Limited Liability Company LLC Or Limited Partnership L P Non Voting General Partner Unit Interest Percentage Non-Current Portion: Accrued Liabilities, Non Current [Abstract] Accrued Liabilities, Non Current Weighted-average number of basic shares (in shares) Weighted Average Number of Shares Outstanding, Basic Disposal Group Classification [Domain] Disposal Group Classification [Domain] Schedule of Calculation of Basic and Diluted EPS Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Post-close adjustments Disposal Group, Including Discontinued Operation, Post-Close Adjustments Disposal Group, Including Discontinued Operation, Post-Close Adjustments Segment Reporting [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Anadarko Anadarko Petroleum Corporation [Member] Anadarko Petroleum Corporation [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Currently Operated Sites Entity Operated Sites [Member] This element indicates sites not listed or proposed for listing by the U.S. Environmental Protection Agency on the CERCLA National Priorities List (NPL), which are operated by the entity. 7.730% debentures due 2096 Debentures 7.730 Percent Due 2096 [Member] Debentures 7.730 Percent Due 2096 [Member] Entity Tax Identification Number Entity Tax Identification Number REVENUES AND OTHER INCOME Revenues and Other Income [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Short position Short [Member] Consolidated Entities [Axis] Consolidated Entities [Axis] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Diamond Alkali Superfund Site - Operable Unit One Diamond Alkali Superfund Site - Operable Unit One [Member] Diamond Alkali Superfund Site - Operable Unit One Common stock, issued (in shares) Common Stock, Shares, Issued 7.500% debentures due 2026 Debentures 7.500 Percent Due 2026 [Member] Debentures 7.500 Percent Due 2026 [Member] Number of parties, settled Number Of Parties, Settled Number Of Parties, Settled 6.050% senior notes due 2054 Senior Notes 6.050 Percent Due 2054 [Member] Senior Notes 6.050 Percent Due 2054 Dividends payable Dividends Payable, Current Construction in progress Construction in Progress, Gross Trading Arrangement: Trading Arrangement [Axis] Increase in current domestic and foreign income taxes Increase (Decrease) in Income Taxes Payable Total Shareholder Return Amount Total Shareholder Return Amount Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Increase in environmental remediation liability Other Increase (Decrease) in Environmental Liabilities Other Product and Service, Other [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Other Other Liabilities, Current 5.375% senior notes due 2032 Senior Notes 5.375 Percent Due 2032 [Member] Senior Notes 5.375 Percent Due 2032 Statement [Line Items] Statement [Line Items] Consolidation Items [Axis] Consolidation Items [Axis] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Additional cash benefits realized from utilization of tax attributes from deduction of legal settlement Additional Cash Tax Benefits Realized From Utilization Of Tax Attributes From Deduction Of Legal Settlement Additional Cash Tax Benefits Realized From Utilization Of Tax Attributes From Deduction Of Legal Settlement Common Stock, $0.20 par value Common Stock Common Stock [Member] Environmental remediation contingency, number of site categories Environmental Remediation Contingency, Number Of Site Categories Environmental Remediation Contingency, Number Of Site Categories Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Diamond Alkali Superfund Site Diamond Alkali Superfund Site [Member] Diamond Alkali Superfund Site Increase in cash, cash equivalents, restricted cash and restricted cash equivalents Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Dilutive securities (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment