ACCOUNTING POLICIES (Details 3) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Components of other assets [Abstract]
Investments in non-consolidated affiliates	$ 25.0	$ 23.3
Deferred debt issuance costs	34.2	10.3
Long term receivable from the sale of an equity method investment	0.0	7.8
Income tax receivable	1.5	6.6
Interest rate swaps	0.0	3.5
Supply contracts	406.5	0.0
Other	20.3	16.4
Other assets	$ 487.5	$ 67.9