Pensions And Other Postretirement Benefits (Schedule Of Expected Return On Assets For Net Periodic Pension Cost) (Details)	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Total	100.00%	100.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	60.00%	73.00%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	29.00%	15.00%
Pooled Investment Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	6.00%	5.00%
Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	3.00%	3.00%
Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	2.00%	4.00%