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Pension And Other Postretirement Benefits (Schedule Of One-Percentage Point Change In Assumed Rates Of Health Care Cost Trend Rates) (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Pension And Other Postretirement Benefits [Abstract]  
Effect on total of service and interest cost components, 1% increase $ 4
Effect on total of service and interest cost components, 1% decrease (4)
Effect on other postretirement benefit obligations, 1% increase 74
Effect on other postretirement benefit obligations, 1% decrease $ (66)