Savings Plans, Pension Plans and Other Postretirement Employee Benefits (Weighted Average Asset Alllocations of the Pension Benefit Plans' Assets) (Details)
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Dec. 31, 2011
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Dec. 31, 2010
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Pension Plans, Defined Benefit [Member]
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Domestic equity securities | 21.00% | 22.00% |
Debt securities | 41.00% | 34.00% |
Global/International equity securities | 24.00% | 29.00% |
Other | 14.00% | 15.00% |
Asset Allocations, Total | 100.00% | 100.00% |
Other Postretirement Benefit Plans, Defined Benefit [Member]
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Domestic equity securities | 0.00% | 0.00% |
Debt securities | 0.00% | 0.00% |
Global/International equity securities | 0.00% | 0.00% |
Other | 0.00% | 0.00% |
Asset Allocations, Total | 0.00% | 0.00% |