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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2024
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table presents the calculation of our basic and diluted EPS:
Year Ended December 31, (in millions, except per share amounts)
202420232022
Numerator:
Net Income Available to Common Shareholders $739.7 $661.7 $749.0 
   Less: Income allocated to participating securities1.6 0.6 — 
Net Income Available to Common Shareholders - Basic$738.1 $661.1 $749.0 
  Add: Dilutive effect of Equity Units— 1.4 2.0 
Net Income Available to Common Shareholders - Diluted$738.1 $662.5 $751.0 
Denominator:
Average common shares outstanding - Basic454.2 416.1 407.1 
Dilutive potential common shares:
Equity Units purchase contracts— 29.8 30.2 
Equity Units purchase contract payment balance— 0.9 3.2 
Shares contingently issuable under employee stock plans0.9 0.7 0.9 
Shares restricted under employee stock plans0.3 0.4 0.5 
ATM Forward agreements0.6 — 0.8 
Average Common Shares - Diluted456.0 447.9 442.7 
Earnings per common share:
Basic$1.63 $1.59 $1.84 
Diluted$1.62 $1.48 $1.70