PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Changes in net periodic benefit cost
Defined benefit plan, contributions by employer			$ 17.0	$ 86.6
Pension Benefits
Changes in net periodic benefit cost
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	$ 0.0	$ 0.0	0.0	0.0
Defined Benefit Plan, Net Periodic Benefit Cost Excluding Settlements, Curtailments and Actuarial Gains (Losses)	(0.8)	(0.2)	(1.8)	1.8
Service cost – benefits earned during the period	0.7	0.6	2.1	2.1
Interest cost on projected benefit obligations	2.6	2.6	8.4	10.0
Expected return on plan assets	(4.2)	(3.4)	(12.4)	(10.3)
Defined Benefit Plan, Amortization of Transition Obligations (Assets)	0.1	0.0	0.1	0.0
Net actuarial (gains)/losses	4.2	11.4	23.4	9.9
Total net periodic expense/(benefit)	$ 3.4	11.2	21.6	11.7
United States Pension Plan of US Entity
Changes in net periodic benefit cost
Termed, Vested Participants Included in Lump Sum Settlement Window	300
Percentage Accepted of Lump Sum Settlement Window Offers	40.00%
Other Benefits
Changes in net periodic benefit cost
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	$ (0.1)	0.0	(0.1)	0.0
Defined Benefit Plan, Net Periodic Benefit Cost Excluding Settlements, Curtailments and Actuarial Gains (Losses)	0.7	0.8	2.1	2.4
Service cost – benefits earned during the period	0.3	0.3	0.8	0.9
Interest cost on projected benefit obligations	0.5	0.5	1.4	1.5
Expected return on plan assets	0.0	0.0	0.0	0.0
Defined Benefit Plan, Amortization of Transition Obligations (Assets)	0.0	0.0	0.0	0.0
Net actuarial (gains)/losses	0.0	0.0	0.0	0.0
Total net periodic expense/(benefit)	$ 0.7	$ 0.8	$ 2.1	$ 2.4