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Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Changes in Carrying Amount of Goodwill
Changes in the carrying amount of goodwill during the years ended December 31, 2024 and 2023 consisted of the following:
(dollars in millions)North AmericaRest of WorldTotal
Balance at December 31, 2022$561.1 $58.6 $619.7 
Currency translation adjustment2.6 (0.1)2.5 
Acquisitions11.2 — 11.2 
Balance at December 31, 2023574.9 58.5 633.4 
Currency translation adjustment(8.7)(1.4)(10.1)
Acquisitions20.5 117.9 138.4 
Balance at December 31, 2024$586.7 $175.0 $761.7 
Schedule of Indefinite-Lived Intangible Assets
The carrying amount of other intangible assets consisted of the following:
20242023
December 31 (dollars in millions)Gross
Carrying
Amount		Accumulated
Amortization		NetGross
Carrying
Amount		Accumulated
Amortization		Net
Amortizable intangible assets:
Patents$3.7 $(3.7)$— $3.7 $(3.7)$— 
Customer lists287.5 (187.3)100.2 286.4 (174.0)112.4 
Total amortizable intangible assets291.2 (191.0)100.2 290.1 (177.7)112.4 
Indefinite-lived intangible assets:
Trade names220.9 — 220.9 224.3 — 224.3 
Total intangible assets$512.1 $(191.0)$321.1 $514.4 $(177.7)$336.7 
Schedule of Finite-Lived Intangible Assets
The carrying amount of other intangible assets consisted of the following:
20242023
December 31 (dollars in millions)Gross
Carrying
Amount		Accumulated
Amortization		NetGross
Carrying
Amount		Accumulated
Amortization		Net
Amortizable intangible assets:
Patents$3.7 $(3.7)$— $3.7 $(3.7)$— 
Customer lists287.5 (187.3)100.2 286.4 (174.0)112.4 
Total amortizable intangible assets291.2 (191.0)100.2 290.1 (177.7)112.4 
Indefinite-lived intangible assets:
Trade names220.9 — 220.9 224.3 — 224.3 
Total intangible assets$512.1 $(191.0)$321.1 $514.4 $(177.7)$336.7