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Power Power - Commodity Derivative [Member] Power - Commodity Derivative Segment Reporting [Abstract] Segment Reporting [Abstract] Ordinary shares, €0.04 par value, 1,275 million shares authorized, 323,004,034 and 322,084,769 shares outstanding, respectively Common Stock, Value, Issued Equity investments— Income (Loss) from Equity Method Investments, Net of Dividends or Distributions [Abstract] Schedule of long-term debt Schedule of Long-Term Debt Instruments [Table Text Block] Restatement Determination Date Restatement Determination Date Total Outstanding borrowings Long-Term Debt and Lease Obligation, Including Current Maturities Derivative instrument risk [Axis] Derivative Instrument [Axis] Tax expense before reclassifications Other Comprehensive Income (Loss) before Reclassifications, Tax Financial Instruments and Fair Value Measurements Financial Instruments And Fair Value Measurements [Text Block] The entire disclosure for derivatives and fair value of assets and liabilities Net income attributable to participating securities, Basic Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Measurement Frequency [Axis] Measurement Frequency [Axis] Poland POLAND Amendment Flag Amendment Flag Consolidated Entities [Axis] Consolidated Entities [Axis] Current liabilities: Liabilities, Current [Abstract] Average Purchase Price (usd per share) Shares Acquired, Average Cost Per Share Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Effect of LIFO inventory liquidation on income Effect of LIFO Inventory Liquidation on Income Disposal Group Classification [Axis] Disposal Group Classification [Axis] Loss Contingencies [Table] Loss Contingencies [Table] Guaranteed Notes due 2027, $1,000 million, 3.5% ($1 million of discount) Guaranteed Notes due 2027, 3.5% Guaranteed Notes due 2027 3.5% [Member] 3.5% guaranteed notes issued at a discount in USD due 2027 that are fully and unconditionally guaranteed by the parent company. 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Document Period End Date Document Period End Date Changes in assets and liabilities that provided (used) cash: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities, Current Face amount Debt Instrument, Face Amount Basic Earnings per share, Basic [Abstract] Earnings Per Share, Basic [Abstract] Cumulative redeemable non-controlling interest stock outstanding (in shares) Temporary Equity, Shares Outstanding Operating costs and expenses: Costs and Expenses [Abstract] Security Exchange Name Security Exchange Name Treasury stock, at cost, 17,418,464 and 18,337,729 ordinary shares, respectively Treasury Stock, Common, Value Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Foreign exchange losses (in percent) Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Percent Technology Technology [Member] The segment whose business is primarily the development and licensing of chemical and polyolefin process technologies and the manufacturing and selling of polyolefin catalysts. Impairment charge Equity Method Investment, Other-than-Temporary Impairment Total liabilities, fair value Liabilities, Fair Value Disclosure Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Payments for settlement of net investment hedges Payments for Hedge, Investing Activities Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Per Share Data Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Trading Symbol Trading Symbol Geographical [Domain] Geographical [Domain] Expenditures for property, plant and equipment Payments to Acquire Property, Plant, and Equipment 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] Summary of fair value of outstanding financial instruments Schedule Of Financial Instruments In Statement Of Financial Position Fair Value [Table Text Block] Tabular disclosure of the location and fair value amounts of financial instruments reported in the statement of financial position. Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Amortization of debt-related costs Amortization of Debt Issuance Costs and Discounts Diluted Earnings Per Share, Diluted [Abstract] Dividends on redeemable non-controlling interests Dividends On Redeemable Non-controlling Interests Amount of paid dividends on redeemable non-controlling interest stock of a subsidiary declared with the form of settlement in cash. Issued by LYB International Finance II B.V.: Subsidiary Issuer, LYB International II Finance B.V. [Member] Subsidiary Issuer, LYB International II Finance B.V. Cash contribution to disposed businesses Proceeds from Divestiture of Businesses, Net of Cash Divested Defined Benefit Pension and Other Postretirement Benefit Plans Defined pension: Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Guaranteed Notes due 2027, $300 million, 8.1% Guaranteed Note due 2027 [Member] 8.1% guaranteed notes issued in USD due 2027. EBITDA Segment Measure Of Profitability Earnings Before Interest Taxes Depreciation And Amortization Earnings before interest, taxes, depreciation and amortization (EBITDA), the measure used by the Company's chief operating decision maker (CODM) to assess the performance of and allocate resources to the Company's reportable segments. Cash flows from operating activities: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount O&P- EAI Olefins And Polyolefins - Europe, Asia & International [Member] The segment whose business is primarily the production and marketing of olefins and co-products, polyethylene and polypropylene in countries outside of the Americas. 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Continuing Operations Continuing Operations [Member] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Effect of dilutive securities (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Award Timing Predetermined Award Timing Predetermined [Flag] Ordinary Shares, Treasury Treasury shares Treasury Stock, Common [Member] Outstanding letters of credit Letters of Credit Outstanding, Amount Summary of foreign currency hedges Summary Of Foreign Currency Derivatives [Table Text Block] Tabular disclosure of the notional amounts and maturity dates for foreign currency derivatives. 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Operating lease assets Operating Lease, Right-of-Use Asset Discontinued Operations, Disposed of by Means Other than Sale Discontinued Operations, Disposed of by Means Other than Sale [Member] Polyethylene Polyethylene [Member] Polyethylene Accounting Changes and Error Corrections [Abstract] Accounting Changes and Error Corrections [Abstract] Schedule of earnings per share, basic and diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Site contingency, accrued liabilities Site Contingency, Accrued Liabilities Site Contingency, Accrued Liabilities Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Pre-tax unrealized gain (loss) to be reclassified to earnings over the next twelve months Price Risk Cash Flow Hedge Unrealized Gain (Loss) to be Reclassified During Next 12 Months Current maturities of long-term debt Less current maturities Long-Term Debt and Lease Obligation, Current European PO Joint Venture European PO Joint Venture [Member] European PO Joint Venture Segment and Related Information Segment Reporting [Text Block] Minimum Minimum [Member] Other Non Reportable Geographical Components [Member] Dividends paid - common stock Payments of Ordinary Dividends, Common Stock Expiration Date Trading Arrangement Expiration Date Hedging Relationship [Axis] Hedging Relationship [Axis] Disaggregation of revenue Disaggregation of Revenue [Table Text Block] Weighted average number of shares outstanding reconciliation [Abstract] Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Income statement location [Axis] Location, Statement of Income, Balance [Axis] Continuing operations (in dollars per share) Diluted from continuing operations (in dollars in per share) Income (Loss) from Continuing Operations, Per Diluted Share Continuing operations (in dollars per share) Basic from continuing operations (in dollars in per share) Income (Loss) from Continuing Operations, Per Basic Share Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Guaranteed Notes due 2026, €500 million, 0.875% Guaranteed Notes due 2026, 0.875% Guaranteed Notes due 2026 [Member] 0.875% guaranteed notes issued in Euro due 2026 that are fully and unconditionally guaranteed by the parent company. Total equity Beginning balance Ending balance Equity, Including Portion Attributable to Noncontrolling Interest 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] Trade Nonrelated Party [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Derivative [Table] Derivative [Table] Ordinary shares, shares authorized (in shares) Common Stock, Shares Authorized Earnings (loss) per share: Earnings Per Share Reconciliation [Abstract] Accumulated other comprehensive income (loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Ethane Ethane - Commodity Derivative [Member] Ethane - Commodity Derivative Precious metal financings Precious Metal Financings [Member] Lease agreements for precious metals which are used in our production processes. Polypropylene Unit Polypropylene Unit [Member] Polypropylene Unit Exercise Price Award Exercise Price Cash flows from investing activities: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Related Party Transaction [Axis] Related Party Transaction [Axis] Segment reporting information [Line Items] Segment Reporting [Line Items] Document Quarterly Report Document Quarterly Report Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Segments [Domain] Segments [Domain] Effect of exchange rate changes on cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Income from continuing operations before equity investments and income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Debt Debt Disclosure [Text Block] Selling, general and administrative expenses Disposal Group, Including Discontinued Operation, General and Administrative Expense Earnings per share, basic and diluted by continuing operations and discontinued operations [Domain] Operating Activities [Domain] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Unamortized debt issuance cost Debt Issuance Costs, Net Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity investments Equity Method Investments Components of AOCI [Domain] Type of equity stock [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Foreign currency Foreign Exchange Contract [Member] Operating costs and expenses: Costs and Expenses Adoption Date Trading Arrangement Adoption Date Stated interest rate (in percent) Debt Instrument, Interest Rate, Stated Percentage Dividends - common stock Aggregate Dividends Paid Dividends, Common Stock, Cash Total Company share of shareholders’ equity Equity, Attributable to Parent Entity Addresses, Address Type [Axis] Entity Addresses, Address Type [Axis] ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Plastic Waste Sorting Facility Plastic Waste Sorting Facility [Member] Plastic Waste Sorting Facility ShareholdersEquityandRedeemableNoncontrollingInterestsAbstract [Abstract] Shareholders Equity and Redeemable Non-controlling Interests Abstract [Abstract] Shareholders Equity and Redeemable Non-controlling Interests Abstract Nonrecurring Fair Value, Nonrecurring [Member] Insider Trading Policies and Procedures [Line Items] Other Other Long Term Debt [Member] Any other long-term notes not specifically mentioned. Polypropylene Polypropylene [Member] Polypropylene Allowance for credit losses, receivables Accounts Receivable, Allowance for Credit Loss, Current Other, net Proceeds from (Payment for) Other Financing Activity Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Stock repurchase program, number of shares authorized to be repurchased (in shares) Share Repurchase Program, Authorized, Number of Shares Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Derivative Instruments, gain (loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Selling, general and administrative expenses Selling, General and Administrative Expense Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Entity Central Index Key Entity Central Index Key Less: Accumulated depreciation Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization All Adjustments to Compensation All Adjustments to Compensation [Member] Other, net Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item 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] Exit costs incurred Restructuring and Related Cost, Incurred Cost Net cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Less: Reconciliation Of E B I T D A To Income From Continuing Operations Before Income Taxes Subtracted Amounts [Abstract] Shareholders’ equity: Equity, Attributable to Parent [Abstract] Income Statement [Abstract] Income Statement [Abstract] Employee stock purchase plan (in shares) Employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Document Transition Report Document Transition Report Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Investment, Name [Axis] Investment, Name [Axis] Share Repurchase Program [Table] Share Repurchase Program [Table] Derivatives designated as hedges: Designated as Hedging Instrument [Member] Intersegment Intersegment Eliminations [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Oxyfuels and related products Oxyfuels And Related Products [Member] Oxyfuels and related products Propylene oxide and derivatives PO And Derivatives [Member] PO & derivatives City Area Code City Area Code Prior service cost Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] Accumulated Other Comprehensive Loss AOCI Attributable to Parent AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Proceeds from settlement of net investment hedges Proceeds from Hedge, Investing Activities Name Forgone Recovery, Individual Name Finished goods Inventory, Finished Goods, Net of Reserves Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Disposal Group, Not Discontinued Operations Disposal Group, Not Discontinued Operations [Member] Statement [Line Items] Statement [Line Items] Total assets Assets Future environmental remediation costs Accrual for Environmental Loss Contingencies Operating segments Operating Segments [Member] Interest expense Interest expense Interest expense Interest Expense, Nonoperating Net income attributable to participating securities, Diluted Participating Securities, Distributed and Undistributed Earnings (Loss), Diluted Sales and other operating revenues Disposal Group, Including Discontinued Operation, Revenue Guaranteed Notes due 2044, $1,000 million, 4.875% ($9 million of discount; $8 million of debt issuance cost) Guaranteed Notes due 2044 [Member] 4.875% notes issued at a discount in USD due 2044 that are fully and unconditionally guaranteed by the parent company. 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Retained Earnings Retained Earnings [Member] Operating lease liabilities Operating Lease, Liability, Noncurrent Senior Revolving Credit Facility Revolving Credit Facility [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Actuarial loss Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Ordinary shares, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Foreign Currency Translation Adjustments Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Payments of debt issuance costs Payments of Debt Issuance Costs Diluted (in dollars per share) Earnings Per Share, Diluted Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Discontinued operations (in dollars per share) Diluted from discontinued operations (in dollars in per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Cash flow hedges Cash Flow Hedging [Member] Country Region Country Region Research and development expenses Research and Development Expense Tax (expense) benefit Reclassification from AOCI, Current Period, Tax Cash flows from financing activities: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Property, plant and equipment, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Sales and other operating revenues: Revenue from Contract with Customer, Excluding Assessed Tax Unused availability Line of Credit Facility, Remaining Borrowing Capacity Schedule of changes in ordinary and treasury shares outstanding during the period Schedule of Stockholders Equity [Table Text Block] 2025 Share Repurchase Authorization 2025 Share Repurchase Authorization [Member] 2025 Share Repurchase Authorization Financial Instruments [Domain] Financial Instruments [Domain] Assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Issued by LYB International Finance B.V.: Subsidiary Issuer, LYB International Finance B.V. [Member] Subsidiary Issuer, LYB International Finance B.V. Inventories Inventory Disclosure [Text Block] Compounding and solutions Compounding and solutions [Member] Compounding and solutions Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Share repurchase authorization [Line Items] Share Repurchase Program [Line Items] Underlying Securities Award Underlying Securities Amount Intermediate chemicals Intermediate Chemicals [Member] Intermediate chemicals Revenues Revenue from Contract with Customer [Text Block] Guaranteed Notes due 2036, $1,000 million, 5.875% ($7 million of discount, $9 million of debt issuance cost Guaranteed Notes due 2036 [Member] Guaranteed Notes due 2036 Raw materials and supplies Inventory, Raw Materials and Supplies, Net of Reserves Other, net Payment for (Proceeds from) Other Investing Activity Inventories Increase (Decrease) in Inventories Curtailment gain Accumulated Defined Benefit Plans Adjustment, Curtailment Gain Attributable to Parent [Member] Accumulated Defined Benefit Plans Adjustment, Curtailment Gain Attributable to Parent Address Type [Domain] Address Type [Domain] Segment Reporting [Table] Segment Reporting [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Additional Gain (Loss) Recognized in Income Derivative, Gain (Loss) on Derivative, Net Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income Operating Income (Loss) Dividend distributions Dividends Declared [Table Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Loss on sale of business Loss on sale of business Gain (Loss) on Disposition of Business Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Derivative [Line Items] Derivative [Line Items] Related Party Transaction [Domain] Related Party Transaction [Domain] 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] Common stock, dividends per share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Guaranteed Notes due 2049, $1,000 million, 4.2% ($13 million of discount; $10 million of debt issuance cost) Guaranteed Notes due 2049 [Member] 4.2% guaranteed notes issued in USD due 2049 that are fully and unconditionally guaranteed by the parent company. Distributions to non-controlling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Redeemable non-controlling interests, dividends per share (in dollars per share) Redeemable Non-Controlling Interests, Dividends Per Share Aggregate dividends declared during the period for each share of redeemable non-controlling interest (ASI special stock) outstanding. 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Increase (Decrease) in Treasury Stock [Roll Forward] Increase (Decrease) in Treasury Stock [Roll Forward] Increase (Decrease) in Treasury Stock [Roll Forward] Disaggregation of revenue [Table] Disaggregation of Revenue [Table] Entity Interactive Data Current Entity Interactive Data Current Technology licensing contracts indemnification period (in years) Indemnification Arrangement Period Period of indemnification arrangements related to technology licensing contracts. Summary of commodity derivatives Summary of Commodity Derivatives [Table Text Block] Tabular disclosure of the notional amounts and maturity dates for commodity derivatives Deferred income taxes Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business Reclassification adjustments out of accumulated other comprehensive income (loss) [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Comprehensive income attributable to the Company shareholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Unamortized discount Debt Instrument, Unamortized Discount Termination Date Trading Arrangement Termination Date Issued by LYB International Finance III LLC: Subsidiary Issuer, LYB International III Finance LLC [Member] Subsidiary Issuer, LYB International III Finance LLC Remaining authorized, number of shares (in shares) Share Repurchase Program, Remaining Authorized, Number of Shares Germany GERMANY Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Change in statutory income tax rate (as a percent) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Guaranteed Notes due 2060, $500 million, 3.8% ($4 million of discount; $5 million of debt issuance cost) Guaranteed Notes due 2060, 3.8% Guaranteed Notes due 2060 [Member] 3.8% guaranteed notes issued in USD due 2060 that are fully and unconditionally guaranteed by the parent company. Defined benefit pension and other postretirement benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other assets Other Assets, Noncurrent Document Type Document Type Disclosure Text Block [Abstract] Disclosure Text Block [Abstract] Estimated fair value and carrying value of non-derivative financial instruments [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Accrued and other current liabilities Accrued Liabilities, Current Impairments Other Asset Impairment Charges Fair Value as of Grant Date Award Grant Date Fair Value Operating Activities [Axis] Operating Activities [Axis] Natural gas Natural Gas and Natural Gas Liquids (NGL) [Member] Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Issuance of long-term debt Proceeds from Issuance of Long-Term Debt Local Phone Number Local Phone Number Consolidation Items [Axis] Consolidation Items [Axis] Senior Notes due 2055, $1,000 million, 4.625% ($15 million of discount; $10 million of debt issuance cost) Senior Notes due 2055 [Member] 4.625% senior notes issued at a discount in USD due 2055. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Reconciliation of EBITDA to income (loss) from continuing operations before income taxes [Abstract] Reconciliation Of E B I T D A To Income From Continuing Operations Before Income Taxes [Abstract] Net investment hedges Net Investment Hedging [Member] Income from continuing operations before income taxes Total reclassifications, before tax Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and contingencies Commitments and Contingencies Total Sales and other operating revenues Revenues Property, plant and equipment Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Income from equity investments Equity income (Income) loss from equity investments Income (Loss) from Equity Method Investments Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount 2024 Share Repurchase Authorization 2024 Share Repurchase Authorization [Member] 2024 Share Repurchase Authorization Executive Category: Executive Category [Axis] China CHINA LIABILITIES, REDEEMABLE NON-CONTROLLING INTERESTS AND EQUITY Liabilities and Equity [Abstract] Inventories Total inventories Inventory, Net All Award Types Award Type [Domain] Guaranteed Notes due 2033, $500 million, 5.625% ($4 million of debt issuance cost) Guaranteed Notes due 2033 [Member] Guaranteed Notes due 2033 Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Gain (Loss) Reclassified to Income from AOCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Shares Repurchased (in shares) Purchase of ordinary shares (in shares) Purchase of ordinary shares (in shares) Treasury Stock, Shares, Acquired PEO Name PEO Name Geographical [Axis] Geographical [Axis] Other expense, net Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Contract with customer liability Contract with Customer, Liability Financial Derivatives Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Schedule of Short-term Debt [Table] Short-Term Debt [Table] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Gain (Loss) Recognized in AOCI Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Repurchases of Company ordinary shares Total Purchase Price, Including Commissions and Fees Treasury Stock, Value, Acquired, Cost Method Guaranteed Notes due 2034, $750 million, 5.5% ($5 million of discount, $6 million of debt issuance cost) Guaranteed Notes due 2034 [Member] Guaranteed Notes due 2034 Cash and cash equivalents and restricted cash at beginning of period Cash and cash equivalents and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Accounts payable Increase (Decrease) in Accounts Payable Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] O&P- Americas Olefins and Polyolefins - Americas [Member] The segment whose business is primarily the production and marketing of olefins, polyethylene and polypropylene in the Americas. Reclassification out of accumulated other comprehensive income (loss) Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Restricted cash Restricted Cash and Cash Equivalent, Current 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] Discontinued operations (in dollars per share) Basic from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Measurement Frequency [Domain] Measurement Frequency [Domain] Debt instrument [Axis] Debt Instrument [Axis] Equity investment, ownership percentage Equity Method Investment, Ownership Percentage Share-based compensation Share-Based Payment Arrangement, Noncash Expense Italy ITALY Disposal Group Name [Axis] Disposal Group Name [Axis] Operating income (loss) Disposal Group, Including Discontinued Operation, Operating Income (Loss) Investment, Name [Domain] Investment, Name [Domain] Accrued environmental liability Accrued Environmental Liability, In Liabilities Held For Sale, Not Part Of Disposal Group Accrued Environmental Liability, In Liabilities Held For Sale, Not Part Of Disposal Group Schedule of inventory Schedule of Inventory, Current [Table Text Block] Basic (in dollars per share) Earnings Per Share, Basic Share repurchase authorization [Line Items] Equity, Class of Treasury Stock [Line Items] Repurchases of Company ordinary shares Repurchases of Company ordinary shares Payments for Repurchase of Common Stock Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Precious metal financings, fair value Short-Term Debt, Fair Value Summary of the impact of financial instruments on earnings and other comprehensive income Derivative Instruments, Gain (Loss) [Table Text Block] Guaranteed Notes due 2030, $500 million, 3.375% Guaranteed Notes due 2030, 3.375% 3.375% Guaranteed Notes due 2030 [Member] 3.375% guaranteed notes due 2030 that are fully and unconditionally guaranteed by the parent company. Cost of sales Cost of Revenue Award Type Award Type [Axis] Interest rates Interest Rate Contract [Member] Cumulative Fair Value Hedging Adjustments Included in Carrying Amount of Debt Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease) Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable: Accounts Receivable, after Allowance for Credit Loss, Current Schedule of share repurchase authorization Class of Treasury Stock [Table Text Block] Retained earnings Retained Earnings (Accumulated Deficit) Commodities Commodity Contract [Member] Product and Service [Axis] Product and Service [Axis] 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] Redeemable non-controlling interests Temporary Equity, Including Noncontrolling Interest Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Earnings per share, basic and diluted [Line Items] Earnings Per Share Basic And Diluted [Line Items] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Description of short-term debt [Line Items] Short-Term Debt [Line Items] Ordinary Shares, Issued Common Stock [Member] Settlement loss Accumulated Defined Benefit Plans Adjustment, Settlement Loss, Attributable To Parent [Member] Accumulated Defined Benefit Plans Adjustment, Settlement Loss, Attributable To Parent Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover page. Cover [Abstract] United Kingdom UNITED KINGDOM Weighted average interest rate, short-term debt (in percent) Short-Term Debt, Weighted Average Interest Rate, at Point in Time Derivative contract type [Domain] Derivative Contract [Domain] Depreciation and amortization Depreciation and amortization expense Cost, Depreciation, Amortization and Depletion Equity Awards Adjustments Equity Awards Adjustments [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Total liabilities, redeemable non-controlling interests and equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Amounts reclassified from accumulated other comprehensive loss Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Non-controlling interests Equity, Attributable to Noncontrolling Interest Per diluted share (in dollars per share) Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Related Party, Type [Domain] Related and Nonrelated Parties [Domain] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Other income, net Other income (expense), net Other Nonoperating Income (Expense) Company Share of Shareholders’ Equity Parent [Member] Guaranteed Notes due 2025, 1.25% 1.25% Guaranteed Notes due 2025 [Member] 1.25% guaranteed notes issued in USD due 2025 that are fully and unconditionally guaranteed by the parent company. Name Awards Close in Time to MNPI Disclosures, Individual Name Entity Address, Country Entity Address, Country U.S. Receivables Facility U.S. Receivables Facility [Member] A U.S. accounts receivable facility which allows a wholly owned, bankruptcy-remote subsidiary to sell an undivided interest in a pool of trade receivables (purchased or received through contribution from certain U.S. subsidiaries that retain the responsibility of servicing the receivables) to financial institutions participating in the facility. 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] Shareholders' Equity and Redeemable Non-controlling Interests Shareholders' Equity and Redeemable Noncontrolling Interests Disclosure [Text Block] The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income; and the entire disclosure of the carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. Other EBITDA Earnings Before Interest Taxes Depreciation And Amortization Other Than From Reportable Segments Earnings before interest, taxes, depreciation and amortization (EBITDA) not attributed to reportable segments. France FRANCE Adjustment to Compensation: Adjustment to Compensation [Axis] Classification of financial instruments [Axis] Derivative And Nonderivative Instruments Classification [Axis] Information by type of financial instrument. Share Repurchase Program [Axis] Share Repurchase Authorization [Axis] Share Repurchase Program [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Guaranteed Notes due 2031, $500 million, 5.125% ($1 million of discount; $4 million of debt issuance cost) 5.125% Guaranteed Notes due 2031 [Member] 5.125% guaranteed notes due 2031 that are fully and unconditionally guaranteed by the parent company. Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Long-term debt Long-term debt Long-Term Debt and Lease Obligation Discontinued Operations and Disposal Groups [Abstract] Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable: Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Mexico MEXICO Long-term debt [Line Items] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Guaranteed Notes due 2043, $750 million, 5.25% ($17 million of discount; $6 million of debt issuance cost) Guaranteed Notes due 2043 [Member] 5.25% notes issued at a discount in USD due 2043 that are fully and unconditionally guaranteed by the parent company. Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent European Assets European Assets [Member] European Assets Company Selected Measure Amount Company Selected Measure Amount Add: Reconciliation Of E B I T D A To Income From Continuing Operations Before Income Taxes Added Amounts [Abstract] Reconciliation of EBITDA to income (loss) from continuing operations before income taxes Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block] Distributions of earnings, net of tax Proceeds from Equity Method Investment, Distribution Derivatives not designated as hedges: Not Designated as Hedging Instrument [Member] Depreciation and amortization Depreciation, Depletion and Amortization Entity Address, Address Line Two Entity Address, Address Line Two Share-based compensation (in shares) Share-based compensation (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Net income Net income Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Discontinued Operations [Line Items] Discontinued Operations [Line Items] Discontinued Operations Non-derivatives: Non-derivatives: [Member] Element that represents types of financial instruments that are classified as non-derivative in function. Provision for income taxes Income Tax Expense (Benefit) Fair value hedges Fair Value Hedging [Member] Classification of financial instruments [Domain] Classification Of Financial Instruments [Domain] The classification of financial instruments as derviative and nonderivative. Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Noncash Item [Abstract] Award Timing Method Award Timing Method [Text Block] Decrease in cash and cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation I&D Intermediates and Derivatives [Member] The segment whose business is primarily the production and marketing of propylene oxide and its derivatives, oxyfuels and related products and intermediate chemicals, such as acetyls, ethylene oxide and ethylene glycol. Other Other Products [Member] Other products Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Accounting and Reporting Changes Accounting Standards Update and Change in Accounting Principle [Text Block] Total reclassifications, after tax Net Income (Loss) Attributable to Parent AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Balance Sheet Location [Axis] Location, Statement of Financial Position, Balance [Axis] Income (loss) from discontinued operations, net of tax Income (loss) from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Schedule of accumulated other comprehensive income (loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Interest income Interest income Investment Income, Interest Derivative assets Derivative Asset, Subject to Master Netting Arrangement, before Offset Guaranteed Notes due 2050, $1,000 million, 4.2% ($6 million of discount; $10 million of debt issuance cost) Guaranteed Notes due 2050, 4.2% Guaranteed Notes due 2050 [Member] 4.2% guaranteed notes due 2050 that are fully and unconditionally guaranteed by the parent company. Japan JAPAN APS Advanced Polymer Solutions [Member] The segment whose business is primarily the production and marketing of compounding and solutions such as polypropylene compounds, masterbatches, engineered composites colors and powders, and advanced polymers, which includes Catalloy and polybutene-1. Other Corporate Non Segment and Eliminations [Member] Corporate Non Segment and Eliminations Sales and other operating revenues: Revenues [Abstract] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]