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Benefit Plans (Asset Allocation For The Pension Plan By Asset Category) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items] |  |
Total | 100.00% | 100.00%
Target Allocation, Equity securities, minimum percentage | 50.00% |
Target Allocation, Equity securities, maximum percentage | 100.00% |
Equity Securities [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Equity securities | 80.00% | 86.00%
Cash And Cash Equivalents [Member] |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fixed income and cash equivalents | 20.00% | 14.00%

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- Definition Total + References No definition available. + Details
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- Details
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- Definition Target allocation percentage of investments in equity securities 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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- Definition Target allocation maximum percentage of investments in equity securities 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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- Definition Target allocation minimum percentage of investments in equity securities 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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- Definition Target allocation percentage in other than debt securities, equity securities, and 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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