CONSOLIDATED FINANCIAL INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Recognized discrete tax benefits	$ (8.3)	$ (4.5)	$ 24.2	$ (3.6)
Accounting Standards Update 2016-09
Recognized discrete tax benefits	2.4		29.2
Cumulative effect of new accounting principle in period of adoption	$ 1.9		$ 1.9

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant