Employee Benefit Plans (Schedule Of Assumptions Used) (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Defined Benefit Plan Disclosure [Line Items]
Discount rate			0.00%
Rate of compensation increase	0.00%	0.00%	0.00%
Expected return on plan assets	0.00%	0.00%	0.00%
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.71%	5.97%	6.85%
Rate of compensation increase	3.39%	3.39%	3.39%
Expected return on plan assets	8.50%	8.50%	8.50%
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.23%	5.67%
Pre-Remeasurement [Member] | Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate			6.85%
Post-Remeasurement [Member] | Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate			5.68%