Share-Based Compensation (Changes in Options Outstanding Under the Plans) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Weighted average remaining life, Exercisable, in years	4 years 3 months 1 day
Stock Options [Member]
Shares subject to options, Beginning balance	8,700,028	14,090,962	18,615,276
Shares subject to options, Granted	1,160,057	1,341,602	1,463,352
Shares subject to options, Exercised	(2,253,094)	(6,994,024)	(5,578,783)
Shares subject to options, Cancelled	(104,378)	(110,496)	(408,883)
Shares subject to options, Ending balance	7,502,613	8,700,028	14,090,962
Shares subject to options, Exercisable	5,127,891
Weighted average exercise price, Beginning balance, in dollars per share	$ 31.87	$ 36.47	$ 33.97
Weighted average exercise price, Granted, in dollars per share	$ 59.82	$ 52.71	$ 40.67
Weighted average exercise price, Exercised, in dollars per share	$ 31.04	$ 35.33	$ 28.87
Weighted average exercise price, Cancelled, in dollars per share	$ 47.85	$ 44.57	$ 41.30
Weighted average exercise price, Ending Balance, in dollars per share	$ 36.21	$ 31.87	$ 36.47
Weighted average exercise price, Exercisable, in dollars per share	$ 30.47
Aggregate intrinsic value, Outstanding, in USD	$ 203.9
Aggregate intrinsic value, Exercisable, in USD	$ 168.8
Weighted average remaining life, Outstanding, in years	5 years 5 months 30 days
Weighted average remaining life, Exercisable, in years	4 years 3 months 1 day