Stock-Based Compensation (Summary Of Stock Options Under The 2007 Plan) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Shares
Options outstanding at beginning of year, shares	995	1,305	1,371
Granted, Shares	0	83	76
Exercised, Shares	(561)	(277)	(82)
Forfeited and expired, Shares	(9)	(116)	(60)
Options outstanding at end of year, shares	425	995	1,305
Vested and expected to vest at end of year, Shares	423
Exercisable at end of year, Shares	343	814	1,106
Weighted average exercise price
Options outstanding at beginning of year, Weighted average exercise price	$ 74.87
Granted, Weighted average exercise price	$ 0.00	$ 66.14	$ 57.34
Exercised, Weighted average exercise price	$ 77.70
Forfeited and expired, Weighted average exercise price	$ 58.22
Options outstanding at the end of year, price per share	$ 71.50	$ 74.87
Vested and expected to vest, Weighted average exercise price	$ 71.54
Exercisable, Weighted average exercise price	$ 73.60
Additional Disclosures
Options outstanding at end of year, Weighted average remaining contractual term (years)	4 years 4 months 24 days
Vested and expected to vest, Weighted average remaining contractual term (years)	4 years 3 months 18 days
Exercisable, Weighted average remaining contractual term (years)	3 years 6 months
Options outstanding at end of year, Aggregate intrinsic value	$ 32,899
Vested and expected to vest, Aggregate intrinsic value	32,729
Exercisable, Aggregate intrinsic value	$ 25,837