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Investments
 9 Months Ended
Sep. 30, 2023
Investments [Abstract]  
Investments INVESTMENTS
The following table summarizes the measurement category, balance sheet location, and balances of our equity securities (in millions):
Measurement CategoryBalance Sheet LocationSeptember 30, 2023December 31, 2022
Fair value methodPrepaid expenses and other current assets$0.1 $0.1 
Fair value method(1)
Other non-current assets$1.6 $1.7 
Equity methodOther non-current assets$60.5 $63.4 
(1) Measured at fair value using the Net Asset Value practical expedient.

The following table summarizes the expense recognized in earnings of our equity securities (in millions):
Three Months EndedNine Months Ended
Measurement CategoryIncome Statement LocationSeptember 30,
2023		October 1, 2022September 30,
2023		October 1, 2022
Fair value methodOther operating (income) expense, net$— $0.1 $0.1 $0.4 
Equity methodOther operating (income) expense, net$0.3 $0.3 $1.5 $1.6