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FAIR VALUE MEASUREMENTS
6 Months Ended
Jun. 30, 2023
Fair Value Disclosures [Abstract]  
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS
Recurring Fair Value Measurements

The following tables summarize assets measured at fair value on a recurring basis (in millions) as of June 30, 2023:

 Quoted prices in active markets
(Level 1)
Significant other observable inputs
(Level 2)
Significant unobservable inputs
(Level 3)
Fair Value Measurements
Equity Securities (1)
$—$—$15.2$15.2
(1) Represents a $3.0 million investment the Company made in its privately held battery recycling partner, HBR Retriev Holdco, LLC, a company controlled by the Heritage Group, an affiliate of the Company.