Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2022

Stock-Based Compensation Plans

Stock-Based Compensation Disclosures (Table)

	For the year ended December 31,
	2022		2021		2020
	(in millions)
Compensation cost	$	22.2	$	25.2	$	24.4
Related income tax benefit		4.6		4.3		4.0
Capitalized as part of an asset		1.2		1.4		1.5

Nonqualified Stock Options Fair Value (Table)

	For the year ended December 31,
Options	2022			2021			2020
Expected volatility		—	%		34.2	%		25.7	%
Expected term (in years)		—			7.0			7.0
Risk-free interest rate		—	%		1.2	%		1.3	%
Expected dividend yield		—	%		3.82	%		4.33	%
Weighted average estimated fair value	$	—		$	15.67		$	9.64