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Goodwill and Other Intangible Assets, net (Tables)
 9 Months Ended
Sep. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
Reporting Units
In millionsPerformance ChemicalsPerformance MaterialsTotal
December 31, 2021$437.7 $4.3 $442.0 
Foreign currency translation(54.4)— (54.4)
September 30, 2022$383.3 $4.3 $387.6 
Schedule of Finite-Lived Intangible Assets
September 30, 2022December 31, 2021
In millionsGrossAccumulated amortizationNetGrossAccumulated amortizationNet
Customer contracts and relationships$288.7 $105.0 $183.7 $317.8 $95.0 $222.8 
Brands (1)
69.4 21.5 47.9 81.7 20.3 61.4 
Developed technology60.4 19.8 40.6 72.2 18.8 53.4 
Other— — — 0.5 0.5 — 
Other intangibles, net (2)
$418.5 $146.3 $272.2 $472.2 $134.6 $337.6 
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(1) Represents trademarks, trade names, and know-how.
(2) The majority of our Other intangibles, net are held in British Pound Sterling (GBP) and changes period over period are primarily driven by foreign currency fluctuations between GBP and USD.

Intangible assets subject to amortization were allocated among our business segments as follows:
In millionsSeptember 30, 2022December 31, 2021
Performance Materials$1.7 $1.9 
Performance Chemicals270.5 335.7
Other intangibles, net$272.2 $337.6