Stock Based Compensation Plans

9 Months Ended

Sep. 30, 2022

Share-Based Payment Arrangement [Abstract]

The following table provides a summary of option activity:


						Weighted
						Average
				Weighted		Remaining
				Average		Contractual		Aggregate
				Exercise		Term		Intrinsic
	Options			Price		(in Years)		Value
Outstanding at December 31, 2021		11.3		$	58.83
Granted		1.5			85.21
Exercised		(0.6	)		40.81
Cancelled		(0.3	)		78.76
Outstanding at September 30, 2022		11.9		$	62.53		5.9	$	159.0
Exercisable at September 30, 2022		7.3		$	50.77		4.2	$	159.0

The following table provides information regarding the intrinsic value of stock options exercised and stock compensation expense related to stock option awards:


	Three Months Ended				Nine Months Ended
	September 30,		September 30,		September 30,		September 30,
	2022		2021		2022		2021
Intrinsic Value of Stock Options Exercised	$	3.3	$	12.0	$	29.6	$	30.8
Stock Compensation Expense Related to Stock Option Awards	$	4.1	$	3.4	$	21.6	$	19.9
Issued Stock Options		0.0		0.0		1.5		1.5
Weighted Average Fair Value of Stock Options issued (per share)	$	0.0	$	0.0	$	21.48	$	17.33
Fair Value of Stock Options Issued	$	0.0	$	0.0	$	32.7	$	26.1

The following table provides a summary of the assumptions used in the valuation of issued stock options:


	Three Months Ended		Nine Months Ended
	September 30,	September 30,	September 30,			September 30,
	2022	2021	2022			2021
Risk-free interest rate	-	-		2.9	%		1.3	%
Expected life in years	-	-		7.1			7.2
Expected volatility	-	-		21.7	%		20.7	%
Dividend yield	-	-		1.2	%		1.2	%