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NET INCOME PER COMMON SHARE (Tables)
 12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table presents the computation of basic and diluted net income per share under the two-class method for the year ended December 31, 2022, 2021 ad 2020 (in millions, except for per share amounts):

Year Ended December 31,
202220212020
Net income from continuing operations$78.1 $70.1 $64.1 
Less: Distributed net income available to participating securities(0.1)(0.3)(0.8)
Less: Undistributed net income available to participating securities(0.2)0.0 0.0 
Numerator for basic net income per share:
Undistributed and distributed net income available to common shareholders$77.8 $69.8 $63.3 
Add: Undistributed net income allocated to participating securities0.2 0.0 0.0 
Less: Undistributed net income reallocated to participating securities(0.2)0.0 0.0 
Numerator for diluted net income per share:
Undistributed and distributed net income available to common shareholders$77.8 $69.8 $63.3 
Denominator:
Weighted average shares outstanding for basic net income per share38.0 37.8 37.5
Effect of dilutive securities0.1 0.2 0.2
Weighted average shares outstanding for diluted net income per share38.1 38.0 37.7 
Net income per share from continuing operations:
Basic$2.05 $1.85 $1.69 
Diluted$2.04 $1.84 $1.68 
Net income from discontinued operations$0.7 $33.2 $1.3 
Less: Distributed net income available to participating securities$0.0 $0.0 $0.0 
Less: Undistributed net income available to participating securities$0.0 $(0.2)$0.0 
Numerator for basic net income per share:
Undistributed and distributed net income available to common shareholders$0.7 $33.0 $1.3 
Add: Undistributed net income allocated to participating securities$0.0 $0.2 $0.0 
Less: Undistributed net income reallocated to participating securities$0.0 $(0.2)$0.0 
Numerator for diluted net income per share:
Undistributed and distributed net income available to common shareholders$0.7 $33.0 $1.3 
Net income per share from discontinued operations:
Basic$0.02 $0.88 $0.03 
Diluted$0.02 $0.87 $0.03 
Net income per share:
Basic$2.07 $2.73 $1.72 
Diluted$2.06 $2.71 $1.71 
Potentially dilutive securities0.1 0.1 0.5