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Earnings Per Share (Notes)
 6 Months Ended
Jun. 30, 2024
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]
13. EARNINGS PER SHARE (EPS)

We present EPS using the two-class method. This method allocates undistributed earnings between common shares and non-vested share-based payment awards that entitle the holder to non-forfeitable dividend rights. Our participating securities are our non-vested restricted stock units.

The following table sets forth the computation of our basic and diluted EPS available to shareholders of common stock (excluding participating securities):
 Three Months EndedSix Months Ended
 June 30,June 30,
 2024202320242023
 (in millions, except per share data)
Numerator  
Net income$18.2 $8.0 $38.7 $2.9 
    Less: Net income attributable to participating securities(0.7)(0.1)(1.3)(0.1)
Net income attributable to common shareholders - Basic and Dilutive$17.5 $7.9 $37.4 $2.8 
Denominators  
Basic common shares outstanding -  
   Weighted-average shares outstanding121.9 120.4 121.4 120.1 
        Less: Weighted-average participating securities(4.3)(3.4)(4.0)(4.0)
    Weighted-average common shares outstanding117.6 117.0 117.4 116.1 
Effect of dilutive securities -  
   Dilutive stock-based compensation0.1 0.2 0.1 0.2 
 
Diluted shares outstanding -  
   Adjusted weighted-average shares after assumed conversions117.7 117.2 117.5 116.3 
   
Basic EPS$0.15 $0.07 $0.32 $0.02 
   
Diluted EPS$0.15 $0.07 $0.32 $0.02