INCOME TAXES (Schedule of Deferred Tax Assets and Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets:
Accrued reserves	$ 0.2	$ 0.2
Stock option expense	1.3	3.1
Net operating loss carryforward and credits	42.9	26.3
Marketable securities	0.4	1.2
Hedging transactions	4.7	0.4
Total deferred tax assets	44.4	29.6
Deferred Tax Liabilities, Net of Valuation Allowance	68.5	52.3
Deferred tax liabilities:
Depreciation and amortization	6.2	7.9
Prepaid expenses and other	0.4	1.5
Investment basis and reserve differences	50.3	32.4
Foreign currency translation	3.9	6.2
Capitalized interest	2.3	2.3
Valuation allowance	0.3	0.4
Net deferred tax liability	$ 24.1	$ 22.7