PENSION (Asset Class) (Detail)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Domestic Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
DefinedBenefitPlanWeightedAverageAssetAllocations	50.00%	50.00%
DefinedBenefitPlanTargetPlanAssetAllocations	50.00%
DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum	40.00%
DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum	60.00%
International Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
DefinedBenefitPlanWeightedAverageAssetAllocations	15.00%	13.00%
DefinedBenefitPlanTargetPlanAssetAllocations	15.00%
DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum	10.00%
DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum	20.00%
EquitySecuritiesMember
Defined Benefit Plan Disclosure [Line Items]
DefinedBenefitPlanWeightedAverageAssetAllocations	65.00%	63.00%
DefinedBenefitPlanTargetPlanAssetAllocations	65.00%
DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum	55.00%
DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum	75.00%
FixedIncomeFundsMember
Defined Benefit Plan Disclosure [Line Items]
DefinedBenefitPlanWeightedAverageAssetAllocations	33.00%	34.00%
DefinedBenefitPlanTargetPlanAssetAllocations	35.00%
DefinedBenefitPlanTargetPlanAssetAllocationsRangeMinimum	25.00%
DefinedBenefitPlanTargetPlanAssetAllocationsRangeMaximum	45.00%

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Target allocation of investments of this type to total plan assets presented on a weighted average basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(i)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(i)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920

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- Definition

Target allocation maximum percentage of investments of this type to total plan assets presented on a weighted average basis.

+ References

+ Details

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- Definition

Target allocation minimum percentage of investments of this type to total plan assets presented on a weighted average basis.

+ References

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- Definition

Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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