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Pension And Other Postretirement Benefits (Schedule Of Weighted Average Assumptions Used To Determine Net Periodic Cost) (Details)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Pension And Other Postretirement Benefits [Abstract]          
Discount rate   5.75% [1] 6.15% [1] 6.40% [1]  
Expected long-term rate of return on plan assets 8.50% 8.50% 8.75% 8.75% 9.00%
Rate of compensation increase   3.50% 3.50% 4.00%  
[1] In all periods presented, the respective discount rates were used to determine net periodic benefit cost for most U.S. pension plans for the full annual period. However, the discount rates for a limited number of plans were updated during the respective years to reflect the remeasurement of these plans due to new union labor agreements, settlements, and (or) curtailments. The updated discount rates used were not significantly different from the discount rates presented.