FAIR VALUE MEASUREMENTS (Details 1) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	$ 8.9	$ 13.8	$ 15.1
Commodity forward contracts	8.9
Interest rate swaps	10.9	13.7	15.1
Commodity forward contracts		10.2	14.7
Earn out	37.6	49.0	44.9
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	8.9	13.8	15.1
Commodity forward contracts	5.7
Interest rate swaps	10.9	13.7	15.1
Commodity forward contracts		7.7	9.9
Earn out	0	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	0	0	0
Commodity forward contracts	0
Interest rate swaps	0	0	0
Commodity forward contracts		0	0
Earn out	37.6	49.0	44.9
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	0	0	0
Commodity forward contracts	3.2
Interest rate swaps	0	0	0
Commodity forward contracts		2.5	4.8
Earn out	$ 0	$ 0	$ 0