Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Reconciliation Of Weighted Average Number Of Common Shares Outstanding

.  The following table sets forth a reconciliation of the weighted-average number of shares of Common Stock outstanding to the weighted-average number of shares outstanding on a diluted basis:

	2017		2016		2015
Weighted average common shares outstanding -  basic		250.6		257.6		262.2
Dilutive effect of stock options		5.5		4.5		5.0
Weighted average common shares outstanding - diluted		256.1		262.1		267.2
Antidilutive stock options outstanding		3.2		1.4		2.2

Summary of Pre-Tax Expense Associated with Fair value of Unvested Stock Options and Restricted Stock Awards

The following table presents the pre-tax expense associated with the fair value of unvested stock options and restricted stock awards included in SG&A expenses and in cost of sales:

	For the Year Ended December 31,
	2017		2016		2015
Cost of sales	$	1.8	$	1.9	$	1.6
Selling, general and administrative expenses		16.3		14.1		14.5
Total	$	18.1	$	16.0	$	16.1