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Net Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Calculation of net earnings per share - basic and net earnings per share - diluted

The calculation of net earnings per share - basic and net earnings per share - diluted were as follows:

Year Ended December 31	2017			2016			2015
Net earnings available to common shareholders:		$545.4			$443.7			$419.2
Weighted-average common shares outstanding (in millions):
Weighted-average common shares outstanding - basic	67.1			70.1			76.8
Effect of dilutive securities - stock options	0.2			0.2			0.5
Effect of other share-based awards	0.6			0.5			0.4
Weighted-average common shares outstanding - diluted	67.9			70.8			77.7
Net earnings per share - basic		$8.13			$6.33			$5.46
Net earnings per share - diluted		$8.04			$6.27			$5.40

Schedule of antidilutive awards

The number, exercise prices and weighted-average remaining life of these antidilutive awards were as follows:

	2017			2016		2015
Shares (in thousands)	—			20		20
Exercise price		$—		$93		$93
Weighted-average remaining life	0.0 years			0.4 years		1.4 years

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- References

No definition available.

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&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/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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