Shareholders' Equity (Restricted Stock Grants And Shares Surrendered To Satisfy Tax Withholdings) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Stockholders' Equity Note [Abstract]
Shares issued	4,020	0	153,900	137,144
Shares surrendered to AutoNation to satisfy tax withholding obligations in connection with the vesting of restricted stock	1,788	516	46,265	42,822