Employee Benefit Plans (Target Allocation, Percentage Of Plan Assets And Weighted Average Expected Rate Of Return) (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cash And Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation, Minimum	0.00%
Target Allocation, Maximum	20.00%
Percentage of Plan Assets	5.20%	8.70%
Weighted Average Expected Long-term Rate of Return	0.16%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation, Minimum	40.00%
Target Allocation, Maximum	60.00%
Percentage of Plan Assets	47.20%	48.20%
Weighted Average Expected Long-term Rate of Return	3.97%
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation, Minimum	40.00%
Target Allocation, Maximum	60.00%
Percentage of Plan Assets	43.90%	43.10%
Weighted Average Expected Long-term Rate of Return	2.01%
Other Financial Instruments [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation, Minimum	0.00%
Target Allocation, Maximum	5.00%
Percentage of Plan Assets	3.70%
Weighted Average Expected Long-term Rate of Return	0.28%