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Earnings (Loss) per Share (Tables)

12 Months Ended

Dec. 31, 2022

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

			Years Ended December 31,
In millions (except share and per share data)			2022						2021						2020
Net income (loss)			$	211.6					$	118.1					$	181.4
Basic and Diluted earnings (loss) per share (1)
Basic earnings (loss) per share			$	5.54					$	2.97					$	4.39
Diluted earnings (loss) per share			$	5.50					$	2.95					$	4.37
Shares (2)
Weighted average number of shares of common stock outstanding - Basic			38,179						39,816						41,330
Weighted average additional shares assuming conversion of potential common shares			292						243						217
Shares - diluted basis			38,471						40,059						41,547

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(1) Diluted earnings (loss) per share is calculated using net income (loss) available to common stockholders divided by diluted weighted average shares of common shares outstanding during each period, which includes the dilutive effect of outstanding equity awards.

(2) Shares are presented in thousands.

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following average number of potential common shares were antidilutive and, therefore, were not included in the diluted earnings per share calculation:

			Years Ended December 31,
In thousands			2022						2021						2020
Average number of potential common shares - antidilutive			204						98						177

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- References

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
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