Share-Based Compensation (Schedule Of Weighted Averages Of The Assumptions Used In Estimating The Fair Value Of Stock Option Awards) (Details) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Share-Based Compensation [Abstract]
Expected stock price volatility	23.00%	28.00%
Expected term, in years	5 years 7 months 6 days	5 years 8 months 12 days
Risk-free interest rate	1.50%	1.50%
Weighted average estimated fair value of options granted	$ 19.72	$ 18.07