Earnings Per Share (Reconciliation Of Basic Shares Outstanding To Diluted Shares Outstanding) (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Earnings Per Share [Abstract]
Basic shares outstanding	55.5	55.0	55.4	54.9
Dilutive effect of stock option awards	0.4	0.5	0.4	0.5
Diluted shares outstanding	55.9	55.5	55.8	55.4