Income Taxes |
9 Months Ended |
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Sep. 30, 2026 | |
| Income Tax Disclosure [Abstract] | |
| Income Taxes | Income Taxes The effective income tax rate was (125.0)% for the three months ended September 30, 2026 as compared to the effective income tax rate of 0.4% for the three months ended September 30, 2025. The effective income tax rate for the three months ended September 30, 2026 of (125.0)% was below the statutory rate of 21.0% primarily due to an increase in foreign losses in jurisdictions with statutory rates above 21%, income attributable to noncontrolling interests, and U.S. federal research and development credits available to the Company. These tax benefits were partially offset by reserves for uncertain tax positions, withholding tax accruals on unremitted foreign earnings, non-deductible executive compensation, and state taxes. These adjustments had an increased impact on the effective income tax rate due to lower income before income taxes for the three months ended September 30, 2026. The effective income tax rate for the three months ended September 30, 2025 was below the statutory rate of 21.0% primarily due to the non-deductible goodwill impairment charge associated with the North American Chlorovinyls reporting unit, a valuation allowance recorded against Westlake Epoxy Netherlands's net operating loss, and the impact of earnings mix across jurisdictions. These adjustments had an inflated impact on the effective income tax rate due to the pre-tax loss for the three months ended September 30, 2025. The effective income tax rate was 15.4% for the nine months ended September 30, 2026 as compared to the effective income tax rate of (0.4)% for the nine months ended September 30, 2025. The effective income tax rate for the nine months ended September 30, 2026 was below the statutory rate of 21.0% primarily due to an increase in foreign losses in jurisdictions with statutory rates above 21%, income attributable to noncontrolling interests, and U.S. federal research and development credits available to the Company. These tax benefits were partially offset by reserves for uncertain tax positions, withholding tax accruals on unremitted foreign earnings, non-deductible executive compensation, and state taxes. The effective income tax rate for the nine months ended September 30, 2025 was below the statutory rate of 21.0% primarily due to the non-deductible goodwill impairment charge associated with the North American Chlorovinyls reporting unit, a valuation allowance recorded against Westlake Epoxy Netherlands's net operating loss, and the impact of earnings mix across jurisdictions. These adjustments had an inflated impact on the effective income tax rate due to the pre-tax loss for the nine months ended September 30, 2025.
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