Capital Stock Transactions (Tables)

9 Months Ended

Sep. 30, 2011

Capital Stock Transactions [Abstract]

Schedule Of Capital Stock Repurchases

	Three months ended September 30,				Nine months ended September 30,
	2011		2010		2011		2010
Shares repurchased		1,530,030		-		1,871,543		146,275
Weighted average price per share	$	55.39	$	-	$	60.30	$	53.32