Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2021

Equity [Abstract]

Total Share-based Incentive Compensation Expense

The table below shows our total share-based incentive compensation expense:

	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions)	2021		2020		2021		2020
Total share-based incentive compensation expense(1)	$	10.6	$	12.3	$	34.4	$	31.3

(1)The amounts presented above do not include the expense related to our U.S. profit sharing contributions made in the form of our common stock, however, the amounts include the expense related to share based awards that are settled in cash.

Number of PSUs Granted and Grant Date Fair Value of PSUs

The target number of PSUs granted and the grant date fair value of the PSUs are shown in the following table:

	Adjusted EBITDA CAGR		ROIC
February 10, 2021 grant date
Number of units granted	41,729		41,729
Fair value on grant date (per unit)	$	45.26	$	45.26
February 11, 2021 grant date
Number of units granted	51,882		51,882
Fair value on grant date (per unit)	$	43.85	$	43.85
March 1, 2021 grant date
Number of units granted	29,762		29,762
Fair value on grant date (per unit)	$	43.02	$	43.02

Summary of Assumptions Used to Calculate the Grant Date Fair Value

The assumptions used to calculate the grant date fair value of the PSUs are shown in the following table:

	February 10, 2021 grant date		February 11, 2021 grant date		March 1, 2021 grant date
Expected price volatility	37.7	%	37.7	%	38.0	%
Risk-free interest rate	0.2	%	0.2	%	0.3	%