Share-Based Compensation and Benefit Plans (Summary Of Stock Options) (Details) - Stock option [Member] shares in Thousands	9 Months Ended
	Sep. 30, 2015 $ / shares shares
Share-Based Compensation and Benefit Plans
Outstanding at December 31, 2014, shares	4,065
Outstanding at December 31, 2014, weighted-average exercise price | $ / shares	$ 64.57
Granted, shares	299
Granted, weighted-average exercise price | $ / shares	$ 208.47
Exercised, shares	(847)
Exercised, weighted-average exercise price | $ / shares	$ 52.89
Forfeited, shares	(88)
Forfeited, weighted-average exercise price | $ / shares	$ 90.92
Outstanding at September 30, 2015, shares	3,429
Outstanding at September 30, 2015, weighted-average exercise price | $ / shares	$ 79.32
Exercisable at September 30, 2015, shares	2,323
Exercisable at September 30, 2015, weighted-average exercise price | $ / shares	$ 50.08