DEFINED BENEFIT PLANS, FAIR VALUE OF PLAN ASSETS (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	$ 244.5	$ 264.4
Cash [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	3.7	2.3
U.S. large cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	58.6	62.7
U.S. mid cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	21.9	26.7
U.S. small cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	7.2	9.8
International - developed [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	26.9	37.5
International - emerging [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	6.1	8.2
Commodities index [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	10.2	15.0
U.S. fixed income [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	109.9	102.2
Level 1 [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	3.7	2.3
Level 1 [Member] | Cash [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	3.7	2.3
Level 1 [Member] | U.S. large cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 1 [Member] | U.S. mid cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 1 [Member] | U.S. small cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 1 [Member] | International - developed [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 1 [Member] | International - emerging [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 1 [Member] | Commodities index [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 1 [Member] | U.S. fixed income [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 2 [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	240.8	262.1
Level 2 [Member] | Cash [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 2 [Member] | U.S. large cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	58.6	62.7
Level 2 [Member] | U.S. mid cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	21.9	26.7
Level 2 [Member] | U.S. small cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	7.2	9.8
Level 2 [Member] | International - developed [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	26.9	37.5
Level 2 [Member] | International - emerging [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	6.1	8.2
Level 2 [Member] | Commodities index [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	10.2	15.0
Level 2 [Member] | U.S. fixed income [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	109.9	102.2
Level 3 [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 3 [Member] | Cash [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 3 [Member] | U.S. large cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 3 [Member] | U.S. mid cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 3 [Member] | U.S. small cap - blend [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 3 [Member] | International - developed [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 3 [Member] | International - emerging [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 3 [Member] | Commodities index [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	0	0
Level 3 [Member] | U.S. fixed income [Member]
Defined Benefit Plans, Fair Value of Plan Assets by Category [Line Items]
Defined Benefit Plans, Assets for Plan Benefits	$ 0	$ 0