Capital Stock Transactions (Tables)

12 Months Ended

Dec. 31, 2020

Capital Stock Transactions [Abstract]

Schedule Of Repurchased Capital Stock

		For the Years Ended December 31,
		2020		2019		2018
Total cost of repurchased shares (in thousands):	$	175,594	$	92,631	$	158,884
Shares repurchased		384,252		269,009		561,146
Weighted average price per share	$	456.98	$	344.34	$	283.14