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CONTINGENCIES AND COMMITMENTS (Detail) (USD $) In Millions		1 Months Ended
CONTINGENCIES AND COMMITMENTS (Detail) (USD $) In Millions	Jan. 31, 2007	Jan. 31, 2007 Legal Proceedings [Member]	Sep. 30, 2011 Legal Proceedings [Member]	Sep. 30, 2011 Environmental Matters [Member]	Dec. 31, 2010 Environmental Matters [Member]	Sep. 30, 2011 Standby Letters Of Credit [Member]	Dec. 31, 2010 Standby Letters Of Credit [Member]
Loss Contingencies [Line Items]
Litigation Settlement Gross		$ 9.0
Litigation Reserve Current			10.3
Litigation Reserve	6.5
Accrual For Environmental Loss Contingencies				20.7	20.8
Environmental Decommisioning Costs				4.5
Letters of Credit Outstanding Amount						$ 59.6	$ 47.0