CONTINGENCIES AND COMMITMENTS (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Loss Contingencies [Line Items]
Surety Bond Outstanding	$ 52.9
Environmental Matters [Member]
Loss Contingencies [Line Items]
Accrual For Environmental Loss Contingencies	16.7
Standby Letters Of Credit [Member]
Loss Contingencies [Line Items]
Letters of Credit Outstanding Amount	52.4	51.8
FinancialStandbyLetterOfCreditMember
Loss Contingencies [Line Items]
Letters of Credit Outstanding Amount	$ 8.9	$ 6.8