CONTINGENCIES AND COMMITMENTS (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012 Legal Proceedings [Member]	Dec. 31, 2012 Standby Letters Of Credit [Member]	Dec. 31, 2011 Standby Letters Of Credit [Member]
Loss Contingencies [Line Items]
Litigation Settlement Gross	$ 5.2
Letters of Credit Outstanding Amount		$ 51.8	$ 55.8

This element represents the gross amount awarded, to be received by, or to be remitted to the entity in settlement of litigation occurring during the period.

No definition available.

Name:	us-gaap_LitigationSettlementGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration