Earnings Per Share (Schedule Of Reconciliation Of Shares Outstanding For Basic And Diluted Earnings Per Share) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Shares outstanding for basic earnings per share	89,894	91,944	89,881	93,194
Dilutive effect of share-based payment awards	1,244	953	1,079	1,068
Shares outstanding for diluted earnings per share	91,138	92,897	90,960	94,262