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GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)
12 Months Ended
Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Changes in the Carrying Amount of Goodwill, by Segment
The changes in the carrying amount of goodwill, by segment, during the years ended December 31, 2023 and 2022 were as follows:
 United
States
EuropeRest of WorldTotal
 (in millions)
Goodwill at December 31, 2021
$773.7 $63.0 $331.2 $1,167.9 
Currency translation adjustment— (3.6)— (3.6)
Goodwill at December 31, 2022
773.7 59.4 331.2 1,164.3 
Goodwill acquired during the year (Note 9)— — 87.2 87.2 
Currency translation adjustment— 2.0 — 2.0 
Goodwill at December 31, 2023
$773.7 $61.4 $418.4 $1,253.5 
Schedule of Finite-Lived Other Intangible Assets
Other intangible assets consist of the following (in millions):

 December 31,
 Weighted-Average Useful Life (in years)20232022
 CostAccumulated
Amortization
Net
Carrying
Value
CostAccumulated
Amortization
Net
Carrying
Value
Finite-lived intangible assets      
Patents9.9$119.3 $(87.6)$31.7 $205.5 $(185.0)$20.5 
Developed technology10.8197.6 (61.9)135.7 128.1 (57.9)70.2 
Other10.012.3 (8.9)3.4 12.2 (7.7)4.5 
10.6329.2 (158.4)170.8 345.8 (250.6)95.2 
Indefinite-lived intangible assets      
In-process research and development257.6 — 257.6 190.0 — 190.0 
$586.8 $(158.4)$428.4 $535.8 $(250.6)$285.2 
Schedule of Indefinite-Lived Other Intangible Assets
Other intangible assets consist of the following (in millions):

 December 31,
 Weighted-Average Useful Life (in years)20232022
 CostAccumulated
Amortization
Net
Carrying
Value
CostAccumulated
Amortization
Net
Carrying
Value
Finite-lived intangible assets      
Patents9.9$119.3 $(87.6)$31.7 $205.5 $(185.0)$20.5 
Developed technology10.8197.6 (61.9)135.7 128.1 (57.9)70.2 
Other10.012.3 (8.9)3.4 12.2 (7.7)4.5 
10.6329.2 (158.4)170.8 345.8 (250.6)95.2 
Indefinite-lived intangible assets      
In-process research and development257.6 — 257.6 190.0 — 190.0 
$586.8 $(158.4)$428.4 $535.8 $(250.6)$285.2 
Schedule of Estimated Amortization Expense Estimated amortization expense for each of the years ending December 31 is as follows (in millions):
2024$5.8 
20257.0 
20269.4 
202710.9 
202814.8