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EARNINGS PER SHARE

9 Months Ended

Sep. 30, 2021

EARNINGS PER SHARE

EARNINGS PER SHARE

10.          EARNINGS PER SHARE

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Basic earnings per share is determined by dividing net income by the weighted average common shares outstanding during the period. The calculation of diluted earnings per share includes the dilutive effect of unexercised non-qualified stock options and non-vested restricted stock units. The computation of weighted average common shares outstanding excluded a nominal amount of anti-dilutive non-qualified stock options for each period ended September 30, 2021 and 2020.

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The computations for basic and diluted earnings per share for the three and nine months ended September 30, 2021 and 2020 are as follows:

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Three Months Ended September 30, 2021

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Nine Months Ended September 30, 2021

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​

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Weighted

Per

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Weighted

Per

​

​

​

​

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Average

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Common

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​

​

​

Average

​

Common

​

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Net

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Common

​

Share

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Net

​

Common

​

Share

(In millions, except per share amounts)

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Income

​

Shares

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Amount

​

Income

​

Shares

​

Amount

Basic

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$

283.2

42.9

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$

6.60

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$

532.9

43.3

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$

12.31

Effect of Dilutive Securities

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​

​

0.5

​

​

(0.07)

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​

​

0.4

​

​

(0.12)

Diluted

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$

283.2

​

43.4

​

$

6.53

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$

532.9

​

43.7

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$

12.19

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​

​

​

​

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​

​

​

​

​

​

​

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Three Months Ended September 30, 2020

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Nine Months Ended September 30, 2020

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​

​

​

Weighted

Per

​

​

Weighted

Per

​

​

​

​

​

Average

​

Common

​

​

​

​

Average

​

Common

​

​

Net

​

Common

​

Share

​

Net

​

Common

​

Share

(In millions, except per share amounts)

​

Income

​

Shares

​

Amount

​

Income

​

Shares

​

Amount

Basic

​

$

70.9

43.1

​

$

1.65

​

$

107.5

43.0

​

$

2.50

Effect of Dilutive Securities

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​

​

0.4

​

​

(0.02)

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​

​

0.4

​

​

(0.02)

Diluted

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$

70.9

​

43.5

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$

1.63

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$

107.5

​

43.4

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$

2.48

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- References

No definition available.

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- Definition

The entire disclosure for earnings per share.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-URI http://asc.fasb.org/topic&trid=2144383

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3630-109257

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