Stock-Based Compensation (Summary Of Stock Options By Exercise Price Range) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares, Outstanding	425
Outstanding, Average life	4 years 4 months 24 days
Outstanding, Average price (usd per share)	$ 71.50
Number of shares, Exercisable	343
Exercisable, Average price (usd per share)	$ 73.60
Under $46.80 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares, Outstanding	38
Outstanding, Average life	5 years 7 months 6 days
Outstanding, Average price (usd per share)	$ 37.53
Number of shares, Exercisable	34
Exercisable, Average price (usd per share)	$ 37.52
Exercise price range, Upper limit	$ 46.80
$57.34-$57.34 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares, Outstanding	73
Outstanding, Average life	7 years 2 months 12 days
Outstanding, Average price (usd per share)	$ 57.34
Number of shares, Exercisable	53
Exercisable, Average price (usd per share)	$ 57.34
Exercise price range, Lower limit	$ 57.34
Exercise price range, Upper limit	$ 57.34
$66.14-$66.14 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares, Outstanding	82
Outstanding, Average life	8 years 1 month 6 days
Outstanding, Average price (usd per share)	$ 66.14
Number of shares, Exercisable	23
Exercisable, Average price (usd per share)	$ 66.14
Exercise price range, Lower limit	$ 66.14
Exercise price range, Upper limit	$ 66.14
$69.95-$81.90 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares, Outstanding	107
Outstanding, Average life	2 years
Outstanding, Average price (usd per share)	$ 77.94
Number of shares, Exercisable	107
Exercisable, Average price (usd per share)	$ 77.94
Exercise price range, Lower limit	$ 66.95
Exercise price range, Upper limit	$ 81.90
$83.12-$88.33 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares, Outstanding	99
Outstanding, Average life	1 year 7 months 6 days
Outstanding, Average price (usd per share)	$ 86.38
Number of shares, Exercisable	99
Exercisable, Average price (usd per share)	$ 86.38
Exercise price range, Lower limit	$ 83.12
Exercise price range, Upper limit	$ 88.33
$89.46-$93.65 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of shares, Outstanding	26
Outstanding, Average life	3 years 1 month 6 days
Outstanding, Average price (usd per share)	$ 93.57
Number of shares, Exercisable	27
Exercisable, Average price (usd per share)	$ 93.57
Exercise price range, Lower limit	$ 89.46
Exercise price range, Upper limit	$ 93.65