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GOODWILL AND INTANGIBLE ASSETS
 9 Months Ended
Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
GOODWILL AND INTANGIBLE ASSETS GOODWILL AND INTANGIBLE ASSETS
Goodwill
The following table summarizes the changes in the carrying amount of goodwill for the nine months ended September 30, 2023:
(in millions)Total
Beginning balance$286.8 
Translation adjustments(0.2)
Ending balance$286.6 
Intangible Assets
Intangible assets consist of amortizable assets of developed technologies, customer relationships, and trademarks. The following summarizes the amounts reported as intangible assets:
(in millions)Gross
Carrying
Amount		Accumulated
Amortization		Net
At September 30, 2023
Developed technologies$624.8 $(284.1)$340.7 
Internally developed software
9.0 (0.1)8.9 
Customer relationships1.6 (0.1)1.5 
Trademarks6.1 (0.6)5.5 
Total intangible assets$641.5 $(284.9)$356.6 
(in millions)Gross
Carrying
Amount		Accumulated
Amortization		Net
At December 31, 2022
Developed technologies$625.0 $(252.9)$372.1 
Customer relationships1.6 — 1.6 
Trademarks6.1 (0.1)6.0 
Total intangible assets$632.7 $(253.0)$379.7 
The Company recorded amortization expense during the respective periods for these intangible assets as follows:

Three months ended
September 30,		Nine months ended
September 30,
(in millions)2023202220232022
Amortization of intangible assets$10.7 $10.2 $32.0 $30.5