STOCK-BASED COMPENSATION PLANS, Summary of Stock Options Outstanding (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
Options [Abstract]
Options outstanding, shares (in shares) | shares	1,755,992
Options outstanding, weighted-average exercise price (in dollars per share)	$ 30.85
Options outstanding, weighted-average remaining life	6 years 3 months 11 days
Options exercisable, shares (in shares) | shares	959,638
Options exercisable, weighted-average exercise price (in dollars per share)	$ 26.94
Weighted-average remaining contractual term of outstanding stock options	6 years 3 months 11 days
Weighted-average remaining contractual term of outstanding and exercisable stock options	4 years 10 months 20 days
Aggregate intrinsic value of outstanding stock options | $	$ 54.3
Aggregate intrinsic value of exercisable stock options | $	$ 33.4
$0.00 - $18.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	$ 0
Exercise price range, upper range limit (in dollars per share)	$ 18.00
Options [Abstract]
Options outstanding, shares (in shares) | shares	44,436
Options outstanding, weighted-average exercise price (in dollars per share)	$ 17.70
Options outstanding, weighted-average remaining life	2 years 2 months 19 days
Options exercisable, shares (in shares) | shares	44,436
Options exercisable, weighted-average exercise price (in dollars per share)	$ 17.70
$18.001 - $23.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	18.001
Exercise price range, upper range limit (in dollars per share)	$ 23.00
Options [Abstract]
Options outstanding, shares (in shares) | shares	267,307
Options outstanding, weighted-average exercise price (in dollars per share)	$ 19.06
Options outstanding, weighted-average remaining life	1 year 11 months 19 days
Options exercisable, shares (in shares) | shares	267,307
Options exercisable, weighted-average exercise price (in dollars per share)	$ 19.06
$23.001 - $28.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	23.001
Exercise price range, upper range limit (in dollars per share)	$ 28.00
Options [Abstract]
Options outstanding, shares (in shares) | shares	159,662
Options outstanding, weighted-average exercise price (in dollars per share)	$ 26.28
Options outstanding, weighted-average remaining life	5 years 6 months 14 days
Options exercisable, shares (in shares) | shares	159,536
Options exercisable, weighted-average exercise price (in dollars per share)	$ 26.28
$28.001 - $29.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	28.001
Exercise price range, upper range limit (in dollars per share)	$ 29.00
Options [Abstract]
Options outstanding, shares (in shares) | shares	203,365
Options outstanding, weighted-average exercise price (in dollars per share)	$ 28.78
Options outstanding, weighted-average remaining life	5 years 2 months 19 days
Options exercisable, shares (in shares) | shares	153,369
Options exercisable, weighted-average exercise price (in dollars per share)	$ 28.78
$29.001 - $30.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	29.001
Exercise price range, upper range limit (in dollars per share)	$ 30.00
Options [Abstract]
Options outstanding, shares (in shares) | shares	254,826
Options outstanding, weighted-average exercise price (in dollars per share)	$ 29.79
Options outstanding, weighted-average remaining life	6 years 2 months 16 days
Options exercisable, shares (in shares) | shares	144,226
Options exercisable, weighted-average exercise price (in dollars per share)	$ 29.79
$30.001 - $40.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price range, lower range limit (in dollars per share)	30.001
Exercise price range, upper range limit (in dollars per share)	$ 40.00
Options [Abstract]
Options outstanding, shares (in shares) | shares	826,396
Options outstanding, weighted-average exercise price (in dollars per share)	$ 37.08
Options outstanding, weighted-average remaining life	8 years 3 months 22 days
Options exercisable, shares (in shares) | shares	190,764
Options exercisable, weighted-average exercise price (in dollars per share)	$ 37.06