Pension And Postretirement Benefits (Schedule Of Pension Plan Target Allocations And Weighted-Average Asset Allocations By Asset Category) (Details)	Dec. 31, 2012 Equity securities [Member]	Dec. 31, 2011 Equity securities [Member]	Dec. 31, 2012 Fixed income securities [Member]	Dec. 31, 2011 Fixed income securities [Member]	Dec. 31, 2012 Alternative assets/Other [Member]	Dec. 31, 2011 Alternative assets/Other [Member]	Dec. 31, 2011 Money market [Member]	Dec. 31, 2010 Money market [Member]
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation, percentage	49.00%	48.00%	37.00%	35.00%	13.00%	12.00%	1.00%	5.00%

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.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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