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Goodwill and Other Intangible Assets, net (Tables)
 12 Months Ended
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
Reporting Units
In millionsPerformance ChemicalsPerformance MaterialsTotal
December 31, 2020$441.0 $4.3 $445.3 
Foreign currency translation(3.3)— (3.3)
December 31, 2021$437.7 $4.3 $442.0 
Foreign currency translation(33.3)— (33.3)
Goodwill acquired (1)
109.8 — 109.8 
December 31, 2022$514.2 $4.3 $518.5 
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(1) See Note 16 for more information about our acquisitions.
Schedule of Finite-Lived Intangible Assets
In millionsCustomer contracts and relationships
Brands (1)
Developed TechnologyOtherTotal
Gross Asset Value
December 31, 2020$319.5 $82.4 $73.0 $2.7 $477.6 
Retirements— — — (2.2)(2.2)
Foreign currency translation(1.7)(0.7)(0.8)— (3.2)
December 31, 2021317.8 81.7 72.2 0.5 472.2 
Acquisitions (2)
88.6 15.0 23.5 — 127.1 
Retirements— — — (0.5)(0.5)
Foreign currency translation(17.9)(7.5)(7.2)— (32.6)
December 31, 2022$388.5 $89.2 $88.5 $— $566.2 
Accumulated Amortization
December 31, 2020$(73.6)$(15.8)$(12.5)$(2.4)$(104.3)
Amortization(21.7)(4.7)(6.6)(0.2)(33.2)
Retirements— — — 2.1 2.1 
Foreign currency translation0.3 0.2 0.3 — 0.8 
December 31, 2021(95.0)(20.3)(18.8)(0.5)(134.6)
Amortization(22.2)(4.6)(6.8)— (33.6)
Retirements— — — 0.5 0.5 
Foreign currency translation3.4 1.0 1.9 — 6.3 
December 31, 2022$(113.8)$(23.9)$(23.7)$— $(161.4)
Other intangibles, net (3)
$274.7 $65.3 $64.8 $— $404.8 
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(1) Represents trademarks, trade names, and know-how.
(2) See Note 16 for more information about our acquisitions.
(3) The weighted average amortization period remaining for all intangibles is 11.3 years, while the weighted average amortization period remaining for customer contracts and relationships, brands, and developed technology and other intangibles is 11.8 years, 12.3 years, 8.4 years, and zero years, respectively.
Intangible assets subject to amortization were allocated among our business segments as follows:
December 31,
In millions20222021
Performance Materials$1.7 $1.9 
Performance Chemicals403.1 335.7 
  Other intangibles, net$404.8 $337.6 
Finite-lived Intangible Assets Amortization Expense
The amortization expense related to our intangible assets in the table above is shown in the table below.
Years Ended December 31,
In millions202220212020
Cost of sales$— $— $0.1 
Selling, general, and administrative expenses33.6 33.2 32.5 
  Total amortization expense$33.6 $33.2 $32.6