NEW ACCOUNTING GUIDANCE (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Item Effected [Line Items]
Tax benefits on stock-based compensation expense	$ 2.5	$ 2.9	$ 13.4	$ 6.1
Average diluted shares outstanding	140.1	143.4	140.6	143.6
Accounting Standards Update 2016-09
Item Effected [Line Items]
Tax benefits on stock-based compensation expense	$ 2.5		$ 8.3
Average diluted shares outstanding			0.5