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Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Share Based Compensation [Abstract]

Summary of Restricted Stock and Performance Unit Award Activity

The following table presents restricted stock and performance unit award activity for the nine months ended September 30, 2020:

		Restricted Stock								Performance Units
		Shares				Weighted Average Grant- Date Fair Value				Shares				Weighted Average Grant- Date Fair Value
Outstanding at January 1, 2020			716,952			$	94.50				323,147			$	96.56
Granted			204,960				94.25				120,285				99.16
Vested			(244,692	)			72.09				(86,015	)			70.81
Forfeitures			(6,813	)			99.73				—				—
Outstanding at September 30, 2020			670,407			$	102.55				357,417			$	103.63

Compensation Expense for Share-Based Awards

Our share-based compensation expense is recorded in "Selling, general, and administrative expenses." Compensation expense for share-based awards recognized in the Consolidated Statements of Income, net of forfeitures, was as follows (dollars in millions):

		Three Months Ended September 30,								Nine Months Ended September 30,
		2020				2019				2020				2019
Restricted stock		$	3.2			$	3.5			$	16.8			$	19.1
Performance units			2.8				2.4				7.0				5.4
Total share-based compensation expense			6.0				5.9				23.8				24.5
Income tax benefit			(1.5	)			(1.5	)			(6.0	)			(6.2	)
Share-based compensation expense, net of tax benefit		$	4.5			$	4.4			$	17.8			$	18.3

Unrecognized Compensation Expense for Share-Based Awards

The unrecognized compensation expense for all share-based awards at September 30, 2020 was as follows (dollars in millions):

		September 30, 2020
		Unrecognized Compensation Expense				Remaining Weighted Average Recognition Period (in years)
Restricted stock		$	29.1				2.7
Performance units			20.3				2.4
Total unrecognized share-based compensation expense		$	49.4				2.5

X

- Definition

Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Tabular disclosure of the changes in outstanding nonvested shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 718
-SubTopic 10
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Tabular disclosure of cost not yet recognized and weighted-average period over which cost is expected to be recognized for nonvested award under share-based payment arrangement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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