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Goodwill and Identifiable Intangible Assets
 3 Months Ended
Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Identifiable Intangible Assets GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS
Goodwill
The following table shows changes in the carrying amount of goodwill from December 31, 2022 to March 31, 2023 by reportable segment:
Performance
Coatings		Mobility
Coatings		Total
Balance at December 31, 2022$1,422.5 $75.5 $1,498.0 
Purchase accounting adjustments(0.4)— (0.4)
Foreign currency translation24.9 1.1 26.0 
Balance at March 31, 2023$1,447.0 $76.6 $1,523.6 
Identifiable Intangible Assets
The following tables summarize the gross carrying amounts and accumulated amortization of identifiable intangible assets by major class:
March 31, 2023Gross Carrying
Amount		Accumulated
Amortization		Net Book
Value		Weighted average
amortization periods (years)
Technology$163.2 $(77.9)$85.3 11.2
Trademarks—indefinite-lived259.4 — 259.4 Indefinite
Trademarks—definite-lived127.2 (52.4)74.8 14.5
Customer relationships1,107.7 (433.8)673.9 19.3
Total$1,657.5 $(564.1)$1,093.4 
During the three months ended March 31, 2023, we retired fully amortized assets totaling $393.4 million consisting of technology, trademarks, and other intangible assets.
December 31, 2022Gross Carrying
Amount		Accumulated
Amortization		Net Book
Value		Weighted average
amortization periods (years)
Technology$555.2 $(462.3)$92.9 10.3
Trademarks—indefinite-lived255.6 — 255.6 Indefinite
Trademarks—definite-lived126.7 (50.8)75.9 14.5
Customer relationships1,106.7 (418.8)687.9 19.2
Other0.6 (0.6)— 5.0
Total$2,044.8 $(932.5)$1,112.3 
The estimated amortization expense related to the fair value of acquired intangible assets for the remainder of 2023 and each of the succeeding five years is:
Remainder of 2023$62.6 
202482.4 
202581.8 
202681.4 
202780.6 
202867.3