Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2023

Stock-Based Compensation Plans

Stock-Based Compensation Disclosures (Table)

	For the year ended December 31,
	2023		2022		2021
	(in millions)
Compensation cost	$	97.7	$	89.9	$	95.2
Related income tax benefit		23.1		20.3		19.9
Capitalized as part of an asset		1.1		1.3		1.4

Nonqualified Stock Options Fair Value (Table)

	For the year ended December 31,
Options	2023			2022			2021
Expected volatility		—	%		—	%		34.2	%
Expected term (in years)		—			—			7.0
Risk-free interest rate		—	%		—	%		1.2	%
Expected dividend yield		—	%		—	%		3.82	%
Weighted average estimated fair value	$	—		$	—		$	15.67

Nonqualified Stock Options Status (Table)

		Weighted-
		average
	Number of options	exercise price		Intrinsic value
	(in millions)			(in millions)
Options outstanding as of January 1, 2023	3.3	$	54.36
Exercised	0.5		48.71
Options outstanding as of December 31, 2023	2.8	$	55.39	$	65.4
Options vested or expected to vest as of December 31, 2023	2.8	$	55.39	$	65.4
Options exercisable as of December 31, 2023	2.6	$	55.08	$	60.6

Nonqualified Stock Options Remaining Contractual Lives and Range of Exercise Prices (Table)

		Weighted-
	Number of options	average remaining
Range of exercise prices	outstanding	contractual life
	(in millions)
$27.46 - $48.11	0.2	2.1
$48.12 - $52.41	0.8	5.1
$52.42 - $55.89	0.4	5.2
$55.90 - $62.75	0.7	7.2
$62.76 - $63.98	0.7	3.9
$27.46 - $63.98	2.8

Nonvested Performance Share Awards Activity (Table)

	Number of	Weighted-
	performance	average grant-date
	share awards	fair value
	(in millions)
Nonvested performance share awards as of January 1, 2023	0.8	$	59.19
Granted	0.3		91.47
Vested	0.2		52.65
Canceled	0.1		65.92
Nonvested performance share awards as of December 31, 2023	0.8	$	71.66

Nonvested Restricted Stock Units Activity (Table)

	Number of	Weighted-
	restricted	average grant-date
	stock units	fair value
	(in millions)
Nonvested restricted stock units as of January 1, 2023	3.2	$	60.69
Granted	0.9		87.71
Vested	1.0		51.70
Canceled	0.1		73.13
Nonvested restricted stock units as of December 31, 2023	3.0	$	71.83