SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of Computation of Basic and Diluted Earnings Per Share

The table below presents the computation of basic and diluted earnings per share (in millions, except for per share information):

	Years Ended December 31,
	2018		2017		2016
Basic:
Net income	$	722.2	$	583.6	$	569.5
Weighted-average shares outstanding	209.2		210.9		213.0
Basic earnings per share	$	3.45	$	2.77	$	2.67
Diluted:
Net income	$	722.2	$	583.6	$	569.5
Weighted-average shares outstanding	209.2		210.9		213.0
Dilutive effect of stock plans	4.4		5.0		4.8
Dilutive weighted-average shares outstanding	213.6		215.9		217.8
Diluted earnings per share	$	3.38	$	2.70	$	2.61

Schedule of Stock-Based Compensation Expense

Total stock-based compensation expense was as follows (in millions):

	Years Ended December 31,
	2018		2017		2016
Cost of sales	$	11.4	$	9.2	$	8.4
Selling, general, and administrative expenses	46.3		40.7		38.0
Research and development expenses	13.3		11.7		10.5
Total stock-based compensation expense	$	71.0	$	61.6	$	56.9