Earnings Per Share (Reconciliation Of Basic Shares Outstanding To Diluted Shares Outstanding) (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share [Abstract]
Basic shares outstanding	55.5	54.8	55.4	54.8
Dilutive effect of stock option awards	0.3	0.5	0.4	0.4
Diluted shares outstanding	55.8	55.3	55.8	55.2