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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2022
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table presents the calculation of our basic and diluted EPS:
Three Months Ended
June 30,		Six Months Ended
June 30,
(in millions, except per share amounts)2022202120222021
Numerator:
Net Income Available to Common Shareholders - Basic$53.2 $46.5 $466.2 $328.2 
Dilutive effect of Equity Units0.5 0.4 1.0 0.4 
Net Income Available to Common Shareholders - Diluted$53.7 $46.9 $467.2 $328.6 
Denominator:
Average common shares outstanding - Basic406.4 393.0 406.2 392.8 
Dilutive potential common shares:
Equity Units purchase contracts27.9 28.2 28.5 14.2 
Equity Units purchase contract payment balance3.3 — 3.6 — 
Shares contingently issuable under employee stock plans1.0 0.8 1.0 0.7 
Shares restricted under employee stock plans0.4 0.3 0.4 0.3 
ATM forward agreements1.2 0.6 1.1 0.5 
Average Common Shares - Diluted440.2 422.9 440.8 408.5 
Earnings per common share:
Basic$0.13 $0.12 $1.15 $0.84 
Diluted$0.12 $0.11 $1.06 $0.80