FAIR VALUE MEASUREMENTS (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Swap Asset Fair Value Disclosure	$ 8.3	$ 13.8
Commodity Forward Contracts Asset Fair Value Disclosure	7.6
Interest Rate Swap Liability Fair Value Disclosure	10.2	13.7
Commodity Forward Contracts Liability Fair Value Disclosure		10.2
Earn Out Liability Fair Value Disclosure	42.0	49.0
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Swap Asset Fair Value Disclosure	0	0
Commodity Forward Contracts Asset Fair Value Disclosure	0.1
Interest Rate Swap Liability Fair Value Disclosure	0	0
Commodity Forward Contracts Liability Fair Value Disclosure		2.5
Earn Out Liability Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Swap Asset Fair Value Disclosure	8.3	13.8
Commodity Forward Contracts Asset Fair Value Disclosure	7.5
Interest Rate Swap Liability Fair Value Disclosure	10.2	13.7
Commodity Forward Contracts Liability Fair Value Disclosure		7.7
Earn Out Liability Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest Rate Swap Asset Fair Value Disclosure	0	0
Commodity Forward Contracts Asset Fair Value Disclosure	0
Interest Rate Swap Liability Fair Value Disclosure	0	0
Commodity Forward Contracts Liability Fair Value Disclosure		0
Earn Out Liability Fair Value Disclosure	$ 42.0	$ 49.0