Overview, Basis of Presentation, and Significant Accounting Policies (Policies)	12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The Consolidated Financial Statements reflect the accounts of the Company and our majority-owned and controlled subsidiaries. All intercompany accounts and transactions between our consolidated operations have been eliminated. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the amounts of assets and liabilities and the disclosures regarding contingent assets and liabilities at period end and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition – The largest stream of revenue is product revenue for shipments of the various products discussed further in Note 18, "Business Segment Information," along with a smaller amount of revenue from services that typically take place over a short period of time. We recognize revenue at a point in time following the transfer of control, which typically occurs when a product is shipped or delivered, depending on the terms of the sale agreement, or when services are rendered. Shipping costs billed to customers are recognized as revenue and expensed in cost of goods sold as a fulfillment cost when control of the product transfers to the customer. Payment from customers is typically due within 30 days of the sale for sales in the U.S. For sales outside of the U.S., payment terms may be longer based upon local business customs, but are typically due no later than 90 days after the sale.
Redeemable Non-Controlling Interests	Redeemable Non-Controlling Interests – Non-controlling interests in subsidiaries that are redeemable for cash or other assets outside of our control are classified as mezzanine equity, outside of equity and liabilities, at the greater of the carrying value or the redemption value. The increases or decreases in the estimated redemption amount are recorded with corresponding adjustments against equity and are reflected in the computation of earnings per share. At December 31, 2023, the redeemable non-controlling interest relates solely to Alluxa.
Foreign Currency Translation	Foreign Currency Translation – The financial statements of those operations whose functional currency is a foreign currency are translated into U.S. dollars using the current rate method. Under this method, all assets and liabilities are translated into U.S. dollars using current exchange rates, and income statement activities are translated using average exchange rates. The foreign currency translation adjustment is included in accumulated other comprehensive income (loss) in the Consolidated Balance Sheets. Gains and losses on foreign currency transactions are included in operating income.
Research and Development Expense	Research and Development Expense – Costs related to research and development activities are expensed as incurred. We perform research and development primarily under company-funded programs for commercial products.
Income Taxes	Income Taxes – We use the asset and liability method of accounting for income taxes. Temporary differences arising between the tax basis of an asset or liability and its carrying amount on the Consolidated Balance Sheet are used to calculate future income tax assets or liabilities. This method also requires the recognition of deferred tax benefits, such as net operating loss carryforwards. Valuation allowances are recorded as appropriate to reduce deferred tax assets to the amount considered likely to be realized. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to the taxable income (losses) in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the date of enactment of the change. A tax benefit from an uncertain tax position is recognized only if we believe it is more likely than not that the position will be sustained on its technical merits. If the recognition threshold for the tax position is met, only the portion of the tax benefit that we believe is greater than 50 percent likely to be realized is recorded. Our future results may include favorable or unfavorable adjustments to our estimated tax liabilities due to closure of income tax examinations, statute expirations, new regulatory or judicial pronouncements, changes in tax laws, changes in projected levels of taxable income, future tax planning strategies, or other relevant events. The Tax Cuts and Jobs Act (the "Tax Act") provides for a territorial tax system, that includes the global intangible low-taxed income (“GILTI”) provision beginning in 2018. The GILTI provisions require us to include in our U.S. income tax return certain current year foreign subsidiary earnings net of foreign tax credits, subject to limitation. We elected to account for the GILTI tax in the period in which it is incurred.
Cash and Cash Equivalents	Cash and Cash Equivalents – Cash and cash equivalents include cash on hand, demand deposits and highly liquid investments with a maturity of three months or less at the time of purchase.
Receivables	Receivables – Accounts receivable are stated at the historical carrying amount net of write-offs and allowance for doubtful accounts. We establish an allowance for doubtful accounts receivable based on historical experience and any specific customer collection issues we have identified. Doubtful accounts receivable are written off when a settlement is reached for an amount less than the outstanding historical balance or when we have determined the balance will not be collected.
Inventories	Inventories – Inventories are valued using the first-in, first out ("FIFO") cost method and are recorded at the lower of cost or net realizable value.
Property, Plant and Equipment	Property, Plant and Equipment – Property, plant and equipment are recorded at cost. Depreciation of plant and equipment is determined on the straight-line method over the following estimated useful lives of the assets: buildings and improvements, 5 to 25 years; machinery and equipment, 3 to 10 years.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets – Goodwill represents the excess of the purchase price over the estimated fair value of the net assets of acquired businesses. Goodwill is not amortized, but instead is subject to impairment testing that is conducted at least annually each calendar year in the fourth quarter. Our annual impairment testing for all of our intangible assets is November 1 of each year. The goodwill asset impairment test involves comparing the fair value of a reporting unit to its carrying amount. An impairment charge is recognized when the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized would not exceed the total amount of goodwill allocated to that reporting unit. Interim tests during the year may be required if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. To estimate the fair value of our five reporting units, we use both a discounted cash flow and a market valuation approach. The discounted cash flow approach uses cash flow projections and a discount rate to calculate the fair value of each reporting unit while the market approach relies on market multiples of similar companies. The key assumptions used for the discounted cash flow approach include projected revenues and profit margins, projected capital expenditures, changes in working capital, and the discount and tax rates. For the market approach, we select a group of peer companies that we believe are best representative of each reporting unit. We use a 75% weighting for the discounted cash flow valuation approach and a 25% weighting for the market valuation approach, reflecting our belief that the discounted cash flow valuation approach is a better indicator of a reporting unit's value since it reflects the specific cash flows anticipated to be generated in the future by the business. At the time of our annual test as of November 1, 2022, our updated forecast and projections based upon our annual strategic plan indicated that the Alluxa reporting unit’s carrying value exceeded fair value by $65.2 million which was recognized as an impairment charge in the fourth quarter of 2022. The discount rate to determine the fair value of Alluxa increased from 12.0% as of November 1, 2021 to 14.6% as of November 1, 2022. In the second quarter of 2023, we determined the lower than previously projected actual and forecasted financial performance of our Alluxa reporting unit to be a triggering event for an interim goodwill impairment test. We determined the carrying value of our Alluxa reporting unit to exceed its fair value and, as a result, we impaired the remaining $60.8 million of goodwill related to Alluxa. Our Consolidated Balance Sheet at December 31, 2023 reflects no goodwill related to Alluxa. The fair value of our semiconductor reporting unit, included in the Advanced Surface Technologies segment, exceeded carrying value by approximately 20% as of November 1, 2023. The carrying value of the Semiconductor reporting unit as of December 31, 2023 includes $532.2 million of goodwill. In the second quarter of 2023, we determined the lower than previously projected actual and forecasted financial performance of our Semiconductor reporting unit to be a triggering event for an interim goodwill impairment test. We determined the fair value exceeded the carrying value as of June 30, 2023. Our Semiconductor reporting unit's value increased from our interim test as of June 30, 2023 due to further progression in our growth initiatives for the reporting unit. We considered the sensitivity of the valuation of our Semiconductor reporting unit to adverse changes in our projected cash flows under three separate alternative scenarios. First, with a 5% reduction in forecasted sales used in our valuation model, we estimate the fair value of the Semiconductor reporting unit would exceed its carrying value by approximately 12%. Second, with a 1% increase in the discount rate as of November 1, 2023 we estimate our fair value of the Semiconductor reporting unit would exceed its carrying value by approximately 9%. For the third scenario, the combination of a 1% increase in discount rate and 5% reduction in forecasted sales would result in the fair value of our Semiconductor reporting unit approximating the carrying value. All annual and interim impairment tests of goodwill for the Semiconductor reporting unit performed during the 3-years ended December 31, 2023 indicated there was no impairment of goodwill for the Semiconductor reporting unit. The fair value of the three reporting units of our Sealing Technologies segment all exceeded their respective carrying values by more than 75% as of November 1, 2023. Our annual impairment test of the goodwill for the three reporting units of our Sealing Technologies segment as of November 1, 2022 and 2021 indicated no impairment. Annual assessments are conducted in the context of information that was reasonably available to us as of the date of the assessment including our best estimates of future sales volumes and prices, material and labor cost and availability, operational efficiency including the impact of projected capital asset additions, and the discount rates and tax rates. Other intangible assets are recorded at cost or, when acquired as a part of a business combination, at estimated fair value. These assets include customer relationships, patents and other technology-related assets, trademarks, licenses, and non-compete agreements. Intangible assets that have definite lives are amortized using a method that reflects the pattern in which the economic benefits of the assets are consumed or the straight-line method over estimated useful lives of 1 to 21 years. Intangible assets with indefinite lives, which are primarily trade names, are subject to at least annual impairment testing, which were conducted as of November 1 in 2023, 2022, and 2021. The impairment testing compares the fair value of the intangible asset with its carrying amount using the relief from royalty method. The testing completed as of November 1, 2023, 2022 and 2021, indicated no impairment. Interim tests may be required if an event occurs or circumstances change that would more likely than not reduce the fair value below the carrying value or change the useful life of the assets.
Debt	Debt – Debt issuance costs associated with our senior secured revolving credit facility are presented as an asset and subsequently amortized into interest expense ratably over the term of the revolving debt arrangement. Debt issuance costs associated with any of our other debt instruments that are incremental third-party costs of issuing the debt are recognized as a reduction in the carrying value of the debt and amortized into interest expense over the time period to maturity using the interest method.
Derivative Instruments	Derivative Instruments – We use derivative financial instruments to manage our exposure to various risks. The use of these financial instruments modifies the exposure with the intent of reducing our risk. We do not use financial instruments for trading purposes, nor do we use leveraged financial instruments. The counterparties to these contractual arrangements are major financial institutions. We use multiple financial institutions for derivative contracts to minimize the concentration of credit risk. The current accounting rules require derivative instruments, excluding certain contracts that are issued and held by a reporting entity that are both indexed to its own stock and classified in shareholders’ equity, be reported in the Consolidated Balance Sheets at fair value and that changes in a derivative’s fair value be recognized currently in earnings unless specific hedge accounting criteria are met.
Fair Value Measurements	Fair Value Measurements – Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. We utilize a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The following is a brief description of those three levels: •Level 1: Observable inputs such as quoted prices in active markets for identical assets or liabilities. •Level 2: Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active. •Level 3: Unobservable inputs that reflect our own assumptions. The fair value of intangible assets associated with acquisitions is determined using an income valuation approach. Projecting discounted future cash flows requires us to make significant estimates regarding projected revenues and profit margins, projected capital expenditures, changes in working capital, discount rates, attrition rates, royalty rates, obsolescence rates and tax rates. This non-recurring fair value measurement would be classified as Level 3 due to the absence of quoted market prices or observable inputs for assets of a similar nature. We review the carrying amounts of long-lived assets when certain events or changes in circumstances indicate that the carrying amounts may not be recoverable. An impairment loss is recognized when the carrying amount of the asset group is not recoverable and exceeds its fair value. We estimate the fair values of assets subject to long-lived asset impairment based on our own judgments about the assumptions that market participants would use in pricing the assets. In doing so, we use a market approach when available or an income approach based upon discounted cash flows. The key assumptions used for the discounted cash flow approach include expected cash flows based on internal business plans, projected growth rates, discount rates, and royalty rates for certain intangible assets. We classify these fair value measurements as Level 3. Similarly, the fair value computations for the recurring impairment analyses of goodwill and indefinite-lived intangible assets would be classified as Level 3 due to the absence of quoted market prices or observable inputs. The key assumptions used for the discounted cash flow approach include projected revenues and profit margins, projected capital expenditures, changes in working capital, discount rates, tax rates and royalty rates for certain indefinite-lived intangible assets. Significant changes in any of those inputs could result in a significantly different fair value measurement.
Pension Benefits	Pension Benefits - Amortization of the net gain or loss resulting from experience different from that assumed and from changes in assumptions is included as a component of benefit cost. If, as of the beginning of the year, that net gain or loss exceeds 10% of the greater of the projected benefit obligation or the market-related value of plan assets, the amortization is that excess divided by the average remaining service period of participating employees expected to receive benefits under the plan. We amortize prior service cost using the straight-line basis over the average future service life of active participants. For segment reporting purposes, we allocate service cost to each location generating those costs. All other components of net periodic pension cost are reported in other (non-operating) expense
Recently Issued Accounting Guidance	Recently Issued Accounting Guidance In November 2023, an accounting standards update was issued that improves reportable segment disclosures surrounding significant segment expenses. The amendments in this guidance are effective for financial statements issued for annual periods beginning after December 15, 2023, and for interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. We are currently evaluating the new guidance. In December 2023, an accounting standards update was issued that will require changes in income tax disclosures. The standard is effective for financial statements issued for annual periods beginning after December 15, 2024, with early adoption permitted. The standard requires prospective adoption with the understanding that there will be a lack of comparability between reporting periods. Alternatively, retrospective adoption is also permitted. We are currently evaluating the new guidance and do not expect it to have a significant impact to our income tax disclosure.

Overview, Basis of Presentation, and Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The Consolidated Financial Statements reflect the accounts of the Company and our majority-owned and controlled subsidiaries. All intercompany accounts and transactions between our consolidated operations have been eliminated.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to make estimates and assumptions that affect the amounts of assets and liabilities and the disclosures regarding contingent assets and liabilities at period end and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Revenue Recognition

Revenue Recognition – The largest stream of revenue is product revenue for shipments of the various products discussed further in Note 18, "Business Segment Information," along with a smaller amount of revenue from services that typically take place over a short period of time. We recognize revenue at a point in time following the transfer of control, which typically occurs when a product is shipped or delivered, depending on the terms of the sale agreement, or when services are rendered. Shipping costs billed to customers are recognized as revenue and expensed in cost of goods sold as a fulfillment cost when control of the product transfers to the customer. Payment from customers is typically due within 30 days of the sale for sales in the U.S. For sales outside of the U.S., payment terms may be longer based upon local business customs, but are typically due no later than 90 days after the sale.

Redeemable Non-Controlling Interests

Redeemable Non-Controlling Interests – Non-controlling interests in subsidiaries that are redeemable for cash or other assets outside of our control are classified as mezzanine equity, outside of equity and liabilities, at the greater of the carrying value or the redemption value. The increases or decreases in the estimated redemption amount are recorded with corresponding adjustments against equity and are reflected in the computation of earnings per share. At December 31, 2023, the redeemable non-controlling interest relates solely to Alluxa.

Foreign Currency Translation

Foreign Currency Translation – The financial statements of those operations whose functional currency is a foreign currency are translated into U.S. dollars using the current rate method. Under this method, all assets and liabilities are translated into U.S. dollars using current exchange rates, and income statement activities are translated using average exchange rates. The foreign currency translation adjustment is included in accumulated other comprehensive income (loss) in the Consolidated Balance Sheets. Gains and losses on foreign currency transactions are included in operating income.

Research and Development Expense

Research and Development Expense – Costs related to research and development activities are expensed as incurred. We perform research and development primarily under company-funded programs for commercial products.

Income Taxes

Income Taxes – We use the asset and liability method of accounting for income taxes. Temporary differences arising between the tax basis of an asset or liability and its carrying amount on the Consolidated Balance Sheet are used to calculate future income tax assets or liabilities. This method also requires the recognition of deferred tax benefits, such as net operating loss carryforwards. Valuation allowances are recorded as appropriate to reduce deferred tax assets to the amount considered likely to be realized. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to the taxable income (losses) in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the date of enactment of the change. A tax benefit from an uncertain tax position is recognized only if we believe it is more likely than not that the position will be sustained on its technical merits. If the recognition threshold for the tax position is met, only the portion of the tax benefit that we believe is greater than 50 percent likely to be realized is recorded. Our future results may include favorable or unfavorable adjustments to our estimated tax liabilities due to closure of income tax examinations, statute expirations, new regulatory or judicial pronouncements, changes in tax laws, changes in projected levels of taxable income, future tax planning strategies, or other relevant events.

The Tax Cuts and Jobs Act (the "Tax Act") provides for a territorial tax system, that includes the global intangible low-taxed income (“GILTI”) provision beginning in 2018. The GILTI provisions require us to include in our U.S. income tax return certain current year foreign subsidiary earnings net of foreign tax credits, subject to limitation. We elected to account for the GILTI tax in the period in which it is incurred.

Cash and Cash Equivalents

Cash and Cash Equivalents – Cash and cash equivalents include cash on hand, demand deposits and highly liquid investments with a maturity of three months or less at the time of purchase.

Receivables

Receivables – Accounts receivable are stated at the historical carrying amount net of write-offs and allowance for doubtful accounts. We establish an allowance for doubtful accounts receivable based on historical experience and any specific customer collection issues we have identified. Doubtful accounts receivable are written off when a settlement is reached for an amount less than the outstanding historical balance or when we have determined the balance will not be collected.

Inventories

Inventories – Inventories are valued using the first-in, first out ("FIFO") cost method and are recorded at the lower of cost or net realizable value.

Property, Plant and Equipment

Property, Plant and Equipment – Property, plant and equipment are recorded at cost. Depreciation of plant and equipment is determined on the straight-line method over the following estimated useful lives of the assets: buildings and improvements, 5 to 25 years; machinery and equipment, 3 to 10 years.

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets – Goodwill represents the excess of the purchase price over the estimated fair value of the net assets of acquired businesses. Goodwill is not amortized, but instead is subject to impairment testing that is conducted at least annually each calendar year in the fourth quarter. Our annual impairment testing for all of our intangible assets is November 1 of each year.

The goodwill asset impairment test involves comparing the fair value of a reporting unit to its carrying amount. An impairment charge is recognized when the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized would not exceed the total amount of goodwill allocated to that reporting unit. Interim tests during the year may be required if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount.

To estimate the fair value of our five reporting units, we use both a discounted cash flow and a market valuation approach. The discounted cash flow approach uses cash flow projections and a discount rate to calculate the fair value of each reporting unit while the market approach relies on market multiples of similar companies. The key assumptions used for the discounted cash flow approach include projected revenues and profit margins, projected capital expenditures, changes in working capital, and the discount and tax rates. For the market approach, we select a group of peer companies that we believe are best representative of each reporting unit. We use a 75% weighting for the discounted cash flow valuation approach and a 25% weighting for the market valuation approach, reflecting our belief that the discounted cash flow valuation approach is a better indicator of a reporting unit's value since it reflects the specific cash flows anticipated to be generated in the future by the business.

At the time of our annual test as of November 1, 2022, our updated forecast and projections based upon our annual strategic plan indicated that the Alluxa reporting unit’s carrying value exceeded fair value by $65.2 million which was recognized as an impairment charge in the fourth quarter of 2022. The discount rate to determine the fair value of Alluxa increased from 12.0% as of November 1, 2021 to 14.6% as of November 1, 2022. In the second quarter of 2023, we determined the lower than previously projected actual and forecasted financial performance of our Alluxa reporting unit to be a triggering event for an interim goodwill impairment test. We determined the carrying value of our Alluxa reporting unit to exceed its fair

value and, as a result, we impaired the remaining $60.8 million of goodwill related to Alluxa. Our Consolidated Balance Sheet at December 31, 2023 reflects no goodwill related to Alluxa.

The fair value of our semiconductor reporting unit, included in the Advanced Surface Technologies segment, exceeded carrying value by approximately 20% as of November 1, 2023. The carrying value of the Semiconductor reporting unit as of December 31, 2023 includes $532.2 million of goodwill. In the second quarter of 2023, we determined the lower than previously projected actual and forecasted financial performance of our Semiconductor reporting unit to be a triggering event for an interim goodwill impairment test. We determined the fair value exceeded the carrying value as of June 30, 2023. Our Semiconductor reporting unit's value increased from our interim test as of June 30, 2023 due to further progression in our growth initiatives for the reporting unit. We considered the sensitivity of the valuation of our Semiconductor reporting unit to adverse changes in our projected cash flows under three separate alternative scenarios. First, with a 5% reduction in forecasted sales used in our valuation model, we estimate the fair value of the Semiconductor reporting unit would exceed its carrying value by approximately 12%. Second, with a 1% increase in the discount rate as of November 1, 2023 we estimate our fair value of the Semiconductor reporting unit would exceed its carrying value by approximately 9%. For the third scenario, the combination of a 1% increase in discount rate and 5% reduction in forecasted sales would result in the fair value of our Semiconductor reporting unit approximating the carrying value. All annual and interim impairment tests of goodwill for the Semiconductor reporting unit performed during the 3-years ended December 31, 2023 indicated there was no impairment of goodwill for the Semiconductor reporting unit.

The fair value of the three reporting units of our Sealing Technologies segment all exceeded their respective carrying values by more than 75% as of November 1, 2023. Our annual impairment test of the goodwill for the three reporting units of our Sealing Technologies segment as of November 1, 2022 and 2021 indicated no impairment.

Annual assessments are conducted in the context of information that was reasonably available to us as of the date of the assessment including our best estimates of future sales volumes and prices, material and labor cost and availability, operational efficiency including the impact of projected capital asset additions, and the discount rates and tax rates.

Other intangible assets are recorded at cost or, when acquired as a part of a business combination, at estimated fair value. These assets include customer relationships, patents and other technology-related assets, trademarks, licenses, and non-compete agreements. Intangible assets that have definite lives are amortized using a method that reflects the pattern in which the economic benefits of the assets are consumed or the straight-line method over estimated useful lives of 1 to 21 years. Intangible assets with indefinite lives, which are primarily trade names, are subject to at least annual impairment testing, which were conducted as of November 1 in 2023, 2022, and 2021. The impairment testing compares the fair value of the intangible asset with its carrying amount using the relief from royalty method. The testing completed as of November 1, 2023, 2022 and 2021, indicated no impairment. Interim tests may be required if an event occurs or circumstances change that would more likely than not reduce the fair value below the carrying value or change the useful life of the assets.

Debt

Debt – Debt issuance costs associated with our senior secured revolving credit facility are presented as an asset and subsequently amortized into interest expense ratably over the term of the revolving debt arrangement. Debt issuance costs associated with any of our other debt instruments that are incremental third-party costs of issuing the debt are recognized as a reduction in the carrying value of the debt and amortized into interest expense over the time period to maturity using the interest method.

Derivative Instruments

Derivative Instruments – We use derivative financial instruments to manage our exposure to various risks. The use of these financial instruments modifies the exposure with the intent of reducing our risk. We do not use financial instruments for trading purposes, nor do we use leveraged financial instruments. The counterparties to these contractual arrangements are major financial institutions. We use multiple financial institutions for derivative contracts to minimize the concentration of credit risk. The current accounting rules require derivative instruments, excluding certain contracts that are issued and held by a reporting entity that are both indexed to its own stock and classified in shareholders’ equity, be reported in the Consolidated Balance Sheets at fair value and that changes in a derivative’s fair value be recognized currently in earnings unless specific hedge accounting criteria are met.

Fair Value Measurements

Fair Value Measurements – Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

We utilize a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three broad levels. The following is a brief description of those three levels:

•Level 1: Observable inputs such as quoted prices in active markets for identical assets or liabilities.

•Level 2: Inputs other than quoted prices that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active.

•Level 3: Unobservable inputs that reflect our own assumptions.

The fair value of intangible assets associated with acquisitions is determined using an income valuation approach. Projecting discounted future cash flows requires us to make significant estimates regarding projected revenues and profit margins, projected capital expenditures, changes in working capital, discount rates, attrition rates, royalty rates, obsolescence rates and tax rates. This non-recurring fair value measurement would be classified as Level 3 due to the absence of quoted market prices or observable inputs for assets of a similar nature.

We review the carrying amounts of long-lived assets when certain events or changes in circumstances indicate that the carrying amounts may not be recoverable. An impairment loss is recognized when the carrying amount of the asset group is not recoverable and exceeds its fair value. We estimate the fair values of assets subject to long-lived asset impairment based on our own judgments about the assumptions that market participants would use in pricing the assets. In doing so, we use a market approach when available or an income approach based upon discounted cash flows. The key assumptions used for the discounted cash flow approach include expected cash flows based on internal business plans, projected growth rates, discount rates, and royalty rates for certain intangible assets. We classify these fair value measurements as Level 3.

Similarly, the fair value computations for the recurring impairment analyses of goodwill and indefinite-lived intangible assets would be classified as Level 3 due to the absence of quoted market prices or observable inputs. The key assumptions used for the discounted cash flow approach include projected revenues and profit margins, projected capital expenditures, changes in working capital, discount rates, tax rates and royalty rates for certain indefinite-lived intangible assets. Significant changes in any of those inputs could result in a significantly different fair value measurement.

Pension Benefits

Pension Benefits - Amortization of the net gain or loss resulting from experience different from that assumed and from changes in assumptions is included as a component of benefit cost. If, as of the beginning of the year, that net gain or loss exceeds 10% of the greater of the projected benefit obligation or the market-related value of plan assets, the amortization is that excess divided by the average remaining service period of participating employees expected to receive benefits under the plan. We amortize prior service cost using the straight-line basis over the average future service life of active participants.

For segment reporting purposes, we allocate service cost to each location generating those costs. All other components of net periodic pension cost are reported in other (non-operating) expense

Recently Issued Accounting Guidance

In November 2023, an accounting standards update was issued that improves reportable segment disclosures surrounding significant segment expenses. The amendments in this guidance are effective for financial statements issued for annual periods beginning after December 15, 2023, and for interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. We are currently evaluating the new guidance.

In December 2023, an accounting standards update was issued that will require changes in income tax disclosures. The standard is effective for financial statements issued for annual periods beginning after December 15, 2024, with early adoption permitted. The standard requires prospective adoption with the understanding that there will be a lack of comparability between reporting periods. Alternatively, retrospective adoption is also permitted. We are currently evaluating the new guidance and do not expect it to have a significant impact to our income tax disclosure.