Employee Benefit Plans (Assumptions Used In Determining The Benefit Obligations And Net Periodic Benefit Expense Income) (Details) (Weighted-Average Assumptions Used To Determine Benefit Obligations [Member])	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Weighted-Average Assumptions Used To Determine Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate at the end of the period	4.55%	5.50%	5.25%
Discount rate at the beginning of the period	5.50%	5.25%	6.25%
Expected return on plan assets	8.00%	8.00%	8.00%
Rate of compensation increase