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Fair Value
 12 Months Ended
Dec. 31, 2024
Fair Value Disclosures [Abstract]  
Fair Value Fair Value
Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In the absence of active markets for the identical assets or liabilities, such measurements involve developing assumptions based on market observable data and, in the absence of such data, internal information consistent with what market participants would use in a hypothetical transaction that occurs at the measurement date. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our market assumptions. Preference is given to observable inputs. These two types of inputs create the following fair value hierarchy:
•Level 1 — Quoted prices for identical instruments in active markets.
•Level 2 — Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.
•Level 3 — Significant inputs to the valuation model are unobservable.
There were no changes during the periods presented to the valuation techniques we use to measure asset and liability fair values on a recurring basis. There were no transfers between the three levels of the fair value hierarchy for the periods presented.
Contingent Consideration for the Sensors & Software and ECS Acquisitions — In connection with the acquisition of Sensors & Software, Inc. in 2020, the sellers were eligible for additional cash consideration of up to $3.8, with payment of such contingent consideration dependent upon the achievement of certain milestones. The fair value of contingent consideration totaled $1.3, and was paid during 2022.
In connection with the acquisition of ECS in 2021, the seller was eligible for additional cash consideration of up to $16.0, with payment of such contingent consideration dependent upon the achievement of certain milestones. During 2022, we concluded the probability of achieving the financial performance milestones had lessened due to delays in the execution of certain large orders. Thus, during 2022 we reduced the fair value/liability by $1.3, with such amounts recorded to “Other operating expense, net.” No additional cash consideration was paid to the seller.
We estimate the fair value of contingent consideration based on the probability of the acquired business achieving the applicable milestones. Based on these inputs, the contingent consideration is classified within Level 3 of the valuation hierarchy.
Goodwill, Indefinite-Lived Intangible and Other Long-Lived Assets — Certain of our non-financial assets are subject to impairment analyses, including long-lived assets, indefinite-lived intangible assets and goodwill. We review the carrying amounts of such assets whenever events or changes in circumstances indicate that the carrying amounts may not be recoverable or at least annually for indefinite-lived intangible assets and goodwill. Any resulting asset impairments result in the asset being recorded at its fair value. Based on these inputs used in the impairment analyses, these assets are classified within Level 3 of the valuation hierarchy. Refer to Note 10 for additional details.
Derivative Financial Instruments — Our financial derivative assets and liabilities include interest rate swaps and FX forward contracts, and are valued using valuation models based on observable market inputs such as forward rates, interest rates, our own credit risk and the credit risk of our counterparties, which comprise investment-grade financial institutions. Based on these inputs, the derivative assets and liabilities are classified within Level 2 of the valuation hierarchy. We have not made any adjustments to the inputs obtained from the independent sources. Based on our continued ability to enter into forward contracts and interest rate swap agreements, we consider the markets for our fair value instruments active. We primarily use the income approach, which uses valuation techniques to convert future amounts to a single present amount.
As of December 31, 2024, there had been no significant impact to the fair value of our derivative liabilities due to our own credit risk, as the related instruments are collateralized under our senior credit facilities. Similarly, there had been no significant impact to the fair value of our derivative assets based on our evaluation of our counterparties’ credit risks.
Equity Security — We estimate the fair value of an equity security that we hold utilizing a practical expedient under existing guidance, with such estimated fair value based on our ownership percentage applied to the net asset value as provided quarterly by the investee. The value is updated annually, during the first quarter, based on the investee’s most recent audited financial statements. Based on these inputs, the equity security is classified within Level 3 of the valuation hierarchy.

During the years ended December 31, 2024, 2023, and 2022, we recorded gains (losses) of $(4.2), $3.6 and $(3.0), respectively, to “Other expense, net” related to changes in the estimated fair value of such equity security. As of December 31, 2024 and 2023, the equity security had an estimated fair value of $35.2 and $39.4, respectively, recorded in “Other assets” on the consolidated balance sheets. We are restricted from transferring this investment without approval of the manager of the investee.
Indebtedness — The estimated fair value of our debt instruments as of December 31, 2024 and December 31, 2023 approximated the related carrying values due primarily to the variable market-based interest rates for such instruments. See Note 13 for further details.