Capital Stock Transactions (Tables)

12 Months Ended

Dec. 31, 2018

Capital Stock Transactions [Abstract]

Schedule Of Capital Stock Repurchases

		For the Years Ended December 31,
		2018		2017		2016
Total cost of repurchased shares (in thousands):	$	158,884	$	94,640	$	102,313
Shares repurchased		561,146		500,000		780,134
Weighted average price per share	$	283.14	$	189.28	$	131.15