Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

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:

	2018		2017		2016
Weighted average common shares outstanding -  basic		245.5		250.6		257.6
Dilutive effect of stock options		5.2		5.5		4.5
Weighted average common shares outstanding - diluted		250.7		256.1		262.1
Antidilutive stock options outstanding		1.9		3.2		1.4

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,
	2018		2017		2016
Cost of sales	$	2.6	$	1.8	$	1.9
Selling, general and administrative expenses		22.3		16.3		14.1
Total	$	24.9	$	18.1	$	16.0