Employee Benefit Plans (Weighted-Average Assumptions Used To Determine The Benefit Obligations) (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Employee Benefit Plans [Abstract]
Benefit obligations, Discount rate	5.05%	5.55%	5.95%
Net periodic benefit cost, Discount rate	5.55%	5.95%	6.75%
Net periodic benefit cost, Expected return on plan assets	8.25%	8.75%	8.75%