PENSION AND POST-RETIREMENT BENEFITS - Aggregate Reconciliation of Projected Benefit Obligations, Plan Assets, Funded Status and Amounts Recognized (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Change in Benefit Obligation:
Benefit obligation - beginning of year		$ (649.4)
Benefit obligation - end of year	$ (649.4)	(640.5)	$ (649.4)
Change in Plan Assets:
Fair value of plan assets - beginning of year		473.9
Fair value of plan assets - end of year	473.9	464.0	473.9
Pension Plans [Member]
Change in Benefit Obligation:
Benefit obligation - beginning of year		(649.4)	(761.7)
Service cost		(0.5)	(0.7)	$ (0.8)
Interest cost		(20.7)	(28.6)	(30.1)
Actuarial gain (loss)		(21.6)	44.4
Pension Lump sum settlement	53.4	0.0	53.4
Other pension settlements		0.0	0.8
Benefits paid		42.8	38.3
Foreign currency translation adjustments		8.9	4.7
Other		0.0	0.0
Benefit obligation - end of year	(649.4)	(640.5)	(649.4)	(761.7)
Change in Plan Assets:
Fair value of plan assets - beginning of year		473.9	567.7
Actual return on plan assets		35.8	(13.9)
Employer contributions		7.3	17.3
Lump sum settlement		0.0	(53.4)
Other pension settlements		0.0	(0.8)
Benefits paid		(42.8)	(38.3)
Foreign currency translation adjustments		(10.2)	(4.7)
Fair value of plan assets - end of year	473.9	464.0	473.9	567.7
Total liability	(175.5)	(176.5)	(175.5)
Other Post-Retirement Benefit Plans [Member]
Change in Benefit Obligation:
Benefit obligation - beginning of year		(13.0)	(12.9)
Service cost		0.0	0.0	0.0
Interest cost		(0.4)	(0.5)	(0.5)
Actuarial gain (loss)		(1.0)	(0.4)
Pension Lump sum settlement		0.0	0.0
Other pension settlements		0.0	0.0
Benefits paid		1.0	0.8
Foreign currency translation adjustments		0.0	0.0
Other		0.0	0.0
Benefit obligation - end of year	(13.0)	(13.4)	(13.0)	(12.9)
Change in Plan Assets:
Fair value of plan assets - beginning of year		0.0	0.0
Actual return on plan assets		0.0	0.0
Employer contributions		1.0	0.8
Lump sum settlement		0.0	0.0
Other pension settlements		0.0	0.0
Benefits paid		(1.0)	(0.8)
Foreign currency translation adjustments		0.0	0.0
Fair value of plan assets - end of year	0.0	0.0	0.0	$ 0.0
Total liability	$ (13.0)	$ (13.4)	$ (13.0)