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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

The following table summarizes our stock-based compensation expense (including stock options, restricted stock units ("RSUs") and performance stock units ("PSUs")) for the three and six months ended June 30, 2020 and 2019:

			Three Months Ended June 30,																		Six Months Ended June 30,
(in millions)			2020						2019						2020						2019
Stock option compensation expense			$	0.8					$	0.8					$	1.6					$	1.3
RSU compensation expense			2.0						1.9						3.0						2.9
PSU compensation expense			(0.3)						0.7						(1.2)						1.2
Total stock-based compensation expense			$	2.5					$	3.4					$	3.4					$	5.4

Schedule of Unrecognized Compensation Cost, Nonvested Awards

The following table summarizes our unrecognized compensation expense and the weighted-average period over which the expense will be recognized as of June 30, 2020:

June 30, 2020

Unrecognized

Weighted Average

Compensation

Years Expense To Be

(in millions, except weighted average years)

Expense

Recognized Over

Stock options

$5.9

2.1

RSUs

$8.0

2.1

PSUs

$0.7

2.5

X

- References

No definition available.

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- 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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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