Share-Based Compensation (Schedule Of Additional Selected Information On Stock Options) (Details) (USD $)	0 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	5,874,590	5,962,325	5,874,590	5,933,870	6,369,239
Outstanding stock options, Weighted average exercise price	$ 35.54	$ 38.87	$ 35.54	$ 43.06	$ 47.37
share-based compensation award, options, outstanding, weighted average remaining contractual term			3 years 2 months 12 days
Outstanding stock options, Weighted average remaining contractual life (years)	2 years 1 month 6 days	2 years 7 months 6 days
Exercisable stock options, Number of shares	4,101,928	4,379,630	4,101,928	4,211,216
Exercisable stock options, Weighted average exercise price	$ 40.40	$ 45.26	$ 40.40	$ 51.26
Exercise Price Range $0.32 To $19.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	1,006,608		1,006,608
Outstanding stock options, Weighted average exercise price	$ 17.39		$ 17.39
Outstanding stock options, Weighted average remaining contractual life (years)			4 years 6 months
Exercisable stock options, Number of shares	479,584		479,584
Exercisable stock options, Weighted average exercise price	$ 15.81		$ 15.81
Exercise Price Range $20.00 To $24.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	1,170,680		1,170,680
Outstanding stock options, Weighted average exercise price	$ 23.84		$ 23.84
Outstanding stock options, Weighted average remaining contractual life (years)			3 years 9 months 18 days
Exercisable stock options, Number of shares	925,953		925,953
Exercisable stock options, Weighted average exercise price	$ 23.86		$ 23.86
Exercise Price Range $25.00 To $29.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	1,637,911		1,637,911
Outstanding stock options, Weighted average exercise price	$ 27.68		$ 27.68
Outstanding stock options, Weighted average remaining contractual life (years)			4 years 6 months
Exercisable stock options, Number of shares	637,000		637,000
Exercisable stock options, Weighted average exercise price	$ 27.96		$ 27.96
Exercise Price Range $30.00 To $39.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	10,000		10,000
Outstanding stock options, Weighted average exercise price	$ 32.45		$ 32.45
Outstanding stock options, Weighted average remaining contractual life (years)			1 year 6 months
Exercisable stock options, Number of shares	10,000		10,000
Exercisable stock options, Weighted average exercise price	$ 32.45		$ 32.45
Exercise Price Range $40.00 To $44.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	14,000		14,000
Outstanding stock options, Weighted average exercise price	$ 41.69		$ 41.69
Outstanding stock options, Weighted average remaining contractual life (years)			1 year 9 months 18 days
Exercisable stock options, Number of shares	14,000		14,000
Exercisable stock options, Weighted average exercise price	$ 41.69		$ 41.69
Exercise Price Range $45.00 To $49.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	1,303,896		1,303,896
Outstanding stock options, Weighted average exercise price	$ 47.28		$ 47.28
Outstanding stock options, Weighted average remaining contractual life (years)			1 year 4 months 24 days
Exercisable stock options, Number of shares	1,303,896		1,303,896
Exercisable stock options, Weighted average exercise price	$ 47.28		$ 47.28
Exercise Price Range $50.00 To $59.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	136,531		136,531
Outstanding stock options, Weighted average exercise price	$ 57.90		$ 57.90
Outstanding stock options, Weighted average remaining contractual life (years)			1 year
Exercisable stock options, Number of shares	136,531		136,531
Exercisable stock options, Weighted average exercise price	$ 57.90		$ 57.90
Exercise Price Range $60.00 To $79.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	124,817		124,817
Outstanding stock options, Weighted average exercise price	$ 68.44		$ 68.44
Outstanding stock options, Weighted average remaining contractual life (years)			9 months 18 days
Exercisable stock options, Number of shares	124,817		124,817
Exercisable stock options, Weighted average exercise price	$ 68.44		$ 68.44
Exercise Price Range $80.00 To $81.99 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	36,500		36,500
Outstanding stock options, Weighted average exercise price	$ 80.65		$ 80.65
Outstanding stock options, Weighted average remaining contractual life (years)			2 years 3 months 18 days
Exercisable stock options, Number of shares	36,500		36,500
Exercisable stock options, Weighted average exercise price	$ 80.65		$ 80.65
Exercise Price Range $82.00 To $83.38 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding stock options, Number of shares	433,647		433,647
Outstanding stock options, Weighted average exercise price	$ 83.25		$ 83.25
Outstanding stock options, Weighted average remaining contractual life (years)			7 months 6 days
Exercisable stock options, Number of shares	433,647		433,647
Exercisable stock options, Weighted average exercise price	$ 83.25		$ 83.25