Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2017

Share-Based Compensation [Abstract]

Schedule Of Weighted Averages Of The Assumptions Used In Estimating The Fair Value Of Stock Option Awards

	For the Three Months Ended
	March 31,
		2017			2016
Share price at grant	$	141.60		$	67.85
Expected stock price volatility		26	%		25	%
Expected term, in years		5.8			5.7
Risk-free interest rate		2.0	%		1.2	%
Weighted average fair value of options granted	$	40.51		$	17.54