Stock Compensation Plans (Schedule Of SSAR Exercise Price Range, Number Of Shares, Weighted Average Exercise Price And Remaining Contractual Lives) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
$21.45 - $32.01 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, lower limit, dollars per share	$ 21.45
Range of Exercise Prices, upper limit, dollars per share	$ 32.01
$33.65 - $43.39 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, lower limit, dollars per share	$ 33.65
Range of Exercise Prices, upper limit, dollars per share	$ 43.39
$47.89 - $63.64 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, lower limit, dollars per share	$ 47.89
Range of Exercise Prices, upper limit, dollars per share	$ 63.64
Stock Appreciation Rights (SARs) [Member]
SSARs Outstanding
SSARs Outstanding, shares	1,360,055	1,094,836
Weighted Average Remaining Contractual Life, years	4 years
SSARs Exercisable
Number of Shares	668,048
Weighted Average Exercise Price, dollars per share	$ 42.56
Stock Appreciation Rights (SARs) [Member] | $21.45 - $32.01 [Member]
SSARs Outstanding
SSARs Outstanding, shares	153,125
Weighted Average Remaining Contractual Life, years	1 year 4 months 24 days
Weighted Average Exercise Price, dollars per share	$ 21.89
SSARs Exercisable
Number of Shares	153,125
Weighted Average Exercise Price, dollars per share	$ 21.89
Stock Appreciation Rights (SARs) [Member] | $33.65 - $43.39 [Member]
SSARs Outstanding
SSARs Outstanding, shares	125,525
Weighted Average Remaining Contractual Life, years	2 years 4 months 24 days
Weighted Average Exercise Price, dollars per share	$ 33.88
SSARs Exercisable
Number of Shares	124,075
Weighted Average Exercise Price, dollars per share	$ 33.76
Stock Appreciation Rights (SARs) [Member] | $47.89 - $63.64 [Member]
SSARs Outstanding
SSARs Outstanding, shares	1,081,405
Weighted Average Remaining Contractual Life, years	4 years 9 months 18 days
Weighted Average Exercise Price, dollars per share	$ 53.79
SSARs Exercisable
Number of Shares	390,848
Weighted Average Exercise Price, dollars per share	$ 53.45