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Pension Plan (Schedule Of Asset Allocation Policy And Ranges For Overall Risk And Return Objectives Of Portfolio) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items] |  |
Total Equity | 45.00% | 62.00%
Total Equity, Permitted Range, maximum | 49.00% |
Total Equity, Permitted Range, minimum | 43.00% |
Total Fixed Income | 50.00% | 31.00%
Total Fixed Income, Permitted Range, maximum | 55.00% |
Total Fixed Income, Permitted Range, minimum | 45.00% |
Other | 5.00% | 7.00%
Other, Permitted Range, maximum | 10.00% |
Other, Permitted Range, minimum | 0.00% |
Policy [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Total Equity | 46.00% |
Total Fixed Income | 50.00% |
Other | 4.00% |

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- Details
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- Definition Target allocation percentage of investments in real estate to total plan assets presented on a weighted-average basis as of the measurement date of the latest statement of financial position. + References No definition available. + Details
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