Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2022

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table presents the calculation of basic and diluted EPS: 

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
	(in millions, except per share amounts)
Weighted average shares - basic	107.5		103.3		107.0		102.3
Dilutive effect of stock awards	0.4		0.6		0.4		0.6
Weighted average shares - diluted	107.9		103.9		107.4		102.9
Net income available to common stockholders	$	260.8	$	236.9	$	754.7	$	653.2
Earnings per share - basic	2.43		2.29		7.06		6.39
Earnings per share - diluted	2.42		2.28		7.03		6.35