Employee Benefit Plans (Schedule Of Price Per Share Targets) (Details) - Performance-Based Restricted Stock Units [Member]	9 Months Ended
	Sep. 30, 2015 $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Price	$ 75
Vesting Target One [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Price	$ 100
Payout Percentage	200.00%
Vesting Target Two [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Price	$ 90
Payout Percentage	100.00%
Vesting Target Three [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Price	$ 75
Payout Percentage	50.00%
Vesting Target Four [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Payout Percentage	0.00%
Maximum [Member] | Vesting Target Four [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Price	$ 75