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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, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Shares outstanding for basic earnings per share:        
Shares outstanding for basic earnings per share (in shares) 86,198 86,756 86,206 87,029
Shares outstanding for diluted earnings per share:        
Shares outstanding for basic earnings per share (in shares) 86,198 86,756 86,206 87,029
Dilutive effect of share-based payment awards (in shares) 1,469 1,697 1,427 1,658
Shares outstanding for diluted earnings per share (in shares) 87,667 88,453 87,633 88,687