Pension And Other Postretirement Benefits (Summary Of Year Contributions To Plan Exceeded More Than 5 Percent Of Total Contribution) (Details)	12 Months Ended
	Dec. 31, 2011
FYE 2011 [Member]
Defined Benefit Plan Disclosure [Line Items]
Year contributions to Fund exceeded more than 5 percent of total contributions (as of December 31 of the Plan's year end)	No
FYE 2010 [Member]
Defined Benefit Plan Disclosure [Line Items]
Year contributions to Fund exceeded more than 5 percent of total contributions (as of December 31 of the Plan's year end)	No
FYE 2009 [Member]
Defined Benefit Plan Disclosure [Line Items]
Year contributions to Fund exceeded more than 5 percent of total contributions (as of December 31 of the Plan's year end)	No