v3.26.1
Goodwill and Other Intangible Assets (Tables)
 6 Months Ended
Jun. 30, 2026
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The following table summarizes the carrying amount of goodwill, and the changes in the carrying amount of goodwill in the six months ended June 30, 2026, by segment:
(in millions)Environmental
Solutions		Safety & Security
Systems		Total
Balance at January 1, 2026$506.8 $113.0 $619.8 
Acquisitions, including measurement period adjustments18.6 — 18.6 
Translation adjustments(0.5)(1.1)(1.6)
Balance at June 30, 2026$524.9 $111.9 $636.8 
Schedule of Finite-Lived Intangible Assets
The following table summarizes the gross carrying amount and accumulated amortization of intangible assets for each major class of intangible assets:
 June 30, 2026December 31, 2025
(in millions)Gross Carrying ValueAccumulated AmortizationNet Carrying ValueGross Carrying ValueAccumulated AmortizationNet Carrying Value
Definite-lived intangible assets:
Customer relationships (a)
$311.6 $(110.7)$200.9 $300.9 $(98.2)$202.7 
Other (a)
9.9 (6.1)3.8 10.3 (6.0)4.3 
Total definite-lived intangible assets321.5 (116.8)204.7 311.2 (104.2)207.0 
Indefinite-lived intangible assets:
Trade names 177.9 — 177.9 171.6 — 171.6 
Other4.3 — 4.3 4.3 — 4.3 
Total indefinite-lived intangible assets182.2 — 182.2 175.9 — 175.9 
Total intangible assets$503.7 $(116.8)$386.9 $487.1 $(104.2)$382.9 
(a)    Average useful life of customer relationships and other definite-lived intangible assets are estimated to be approximately 13 years and 9 years, respectively. The average useful life across all definite-lived intangible assets is estimated to be approximately 13 years.
Schedule of Indefinite-Lived Intangible Assets
The following table summarizes the gross carrying amount and accumulated amortization of intangible assets for each major class of intangible assets:
 June 30, 2026December 31, 2025
(in millions)Gross Carrying ValueAccumulated AmortizationNet Carrying ValueGross Carrying ValueAccumulated AmortizationNet Carrying Value
Definite-lived intangible assets:
Customer relationships (a)
$311.6 $(110.7)$200.9 $300.9 $(98.2)$202.7 
Other (a)
9.9 (6.1)3.8 10.3 (6.0)4.3 
Total definite-lived intangible assets321.5 (116.8)204.7 311.2 (104.2)207.0 
Indefinite-lived intangible assets:
Trade names 177.9 — 177.9 171.6 — 171.6 
Other4.3 — 4.3 4.3 — 4.3 
Total indefinite-lived intangible assets182.2 — 182.2 175.9 — 175.9 
Total intangible assets$503.7 $(116.8)$386.9 $487.1 $(104.2)$382.9 
(a)    Average useful life of customer relationships and other definite-lived intangible assets are estimated to be approximately 13 years and 9 years, respectively. The average useful life across all definite-lived intangible assets is estimated to be approximately 13 years.