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Income Taxes (Notes)
 6 Months Ended
Jun. 30, 2026
Income Tax Disclosure [Abstract]  
Income Tax Disclosure [Text Block]
13. INCOME TAXES

We adjust our effective tax rate each quarter based on our estimated annual effective tax rate. We also record the tax impact of certain discrete, unusual or infrequently occurring items, including changes in judgment about valuation allowances and the effects of changes in tax laws or rates on deferred tax balances, in the interim period in which they occur. In addition, jurisdictions with a projected loss for the year or a year-to-date loss where no tax benefit can be recognized are excluded from the estimated annual effective tax rate. The impact of such an exclusion could result in a higher or lower effective tax rate during a particular quarter, based upon the mix and timing of actual earnings versus annual projections.

Our income tax expense and effective income tax rates for the three and six months ended June 30, 2026 and June 30, 2025 are as follows:

Three Months EndedSix Months Ended
June 30,June 30,
2026202520262025
(in millions)
Income tax expense (benefit)$16.1 $28.1 $(3.5)$42.1 
Effective income tax rate91.5 %41.7 %3.4 %47.6 %

For the three and six months ended June 30, 2026, our effective income tax rate varies from the U.S. federal statutory rate primarily due to the impact of net losses in certain jurisdictions with no corresponding tax benefit due to increases in our valuation allowance and permanent adjustments associated with nondeductible transaction costs incurred in conjunction with the Business Combination, partially offset by the benefit from utilization of tax credits. For the six months ended June 30, 2026, these tax expenses were partially offset by the release of $22.4 million of valuation allowance in a non-U.S. jurisdiction.

Our income tax expense and effective income tax rate for the three and six months ended June 30, 2026 vary from our income tax expense and effective income tax rate for the three and six months ended June 30, 2025 primarily as a result of the items described in the preceding paragraph, as well as the mix of earnings on a jurisdictional basis.

For the three and six months ended June 30, 2025, our effective income tax rates varied from the U.S. federal statutory rate primarily due to the unfavorable impact of disallowed interest expense deductions in the U.S., as well as the mix of earnings on a jurisdictional basis, and the impact of certain non-U.S. tax rates and non-U.S. withholding taxes. In addition, the impact of tax expense from valuation allowances in certain non-U.S. jurisdictions also impacted our effective tax rate, as compared to the U.S. federal statutory rate, for the three and six months ended June 30, 2025. These tax expenses were partially offset by the favorable impact of tax credits.

In accordance with the guidance in ASC 740 - Income Taxes, we review the likelihood that we will realize the benefit of deferred tax assets and estimate whether recoverability of our deferred tax assets is "more likely than not" based on the available evidence. Due to the uncertainty associated with the potential impact of geopolitical conflicts or events, as well as macroeconomic factors, including sustained or increased inflation, renegotiated trade agreements, and tariffs or import restrictions, we may experience lower than projected earnings in certain jurisdictions in future periods and, as a result, it is reasonably possible that changes in valuation allowances could be recognized in future periods and such changes could be material to our financial statements.
Other Income Tax Matters

Pending Tax Litigation

During their examination of our 2015 U.S. federal income tax return, the Internal Revenue Service (IRS) asserted that income earned by a Luxembourg subsidiary from its Mexican branch operations should be categorized as foreign base company sales income (FBCSI) under Section 954(d) of the Internal Revenue Code and recognized currently as taxable income on our 2015 U.S. federal income tax return. As a result of this assertion, the IRS issued a Notice of Proposed Adjustment (NOPA). The Company disagreed with the NOPA, believes that the proposed adjustment is without merit and contested the matter through the IRS's administrative appeals process. No resolution was reached in the appeals process and, in September 2022, the IRS issued a Notice of Deficiency. The IRS subsequently issued a Notice of Tax Due in December 2022 and we paid the assessed tax and interest of $10.1 million in January 2023. We filed a claim for refund for the amount of tax and interest paid related to this matter for the 2015 tax year and, in December 2023, we filed suit in the U.S. Court of Federal Claims. We have a trial date set to begin court proceedings on this matter in 2026.

We believe, after consultation with tax and legal counsel, that it is more likely than not that our structure did not give rise to FBCSI, and it's likely that we will be successful in ultimately defending our position. As such, we have not recorded any impact of the IRS’s proposed adjustment in our condensed consolidated financial statements as of, and for the six months ended, June 30, 2026 and June 30, 2025, with the exception of the income tax receivable of $10.1 million that was paid by the Company to the IRS in 2023. As of June 30, 2026, in the event the Company is not successful in defending its position, the potential additional income tax expense, including estimated interest charges, related to tax years 2015 through 2023, is estimated to be in the range of approximately $335 million to $385 million.

The IRS has subsequently issued to the Company additional NOPAs for this matter for each of the tax years 2016 through 2022. The issuance of these NOPAs does not impact the aforementioned estimated range of potential income tax expense and interest charges and does not alter our belief that it is more likely than not that our structure did not give rise to FBCSI and that it’s likely that we will be successful in ultimately defending our position.

Negative or unexpected outcomes of tax examinations and audits, and any related litigation, could have a material adverse impact on our results of operations, financial condition and cash flows. We will continue to monitor the progress and conclusions of all ongoing audits and other communications with tax authorities and will adjust our estimated liability as necessary. As of June 30, 2026 and December 31, 2025, we have recorded a liability for unrecognized income tax benefits and related interest and penalties of $209.5 million and $32.6 million, respectively. The increase in our liability for unrecognized income tax benefits as of June 30, 2026, as compared to December 31, 2025, is the result of liabilities associated with the Business Combination.