Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2017

Share-Based Compensation [Abstract]

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

	For the Nine Months Ended
	September 30,
		2017			2016
Share price at grant	$	142.89		$	68.94
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	$	40.83		$	17.84