Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2017

Stockholders' Equity Note [Abstract]

Shares Repurchased Under Share Repurchase Program

A summary of shares repurchased under our stock repurchase program authorized by our Board of Directors follows:



	Three Months Ended
	March 31,
	2017		2016
Shares repurchased	—		7.9
Aggregate purchase price	$	—	$	370.6
Average purchase price per share	$	—	$	47.20

Common Stock Issued With The Exercise Of Stock Options

A summary of shares of common stock issued in connection with the exercise of stock options follows:



	Three Months Ended
	March 31,
	2017		2016
Shares issued (in actual number of shares)	632,041		26,261
Proceeds from the exercise of stock options	$	21.5	$	0.6
Average exercise price per share	$	34.03	$	22.94

Restricted Stock Grants And Shares Surrendered to Satisfy Tax Withholdings

The following table presents a summary of shares of common stock issued in connection with grants of restricted stock and shares surrendered to AutoNation to satisfy tax withholding obligations in connection with the vesting of restricted stock (in actual number of shares):



	Three Months Ended
	March 31,
	2017	2016
Shares issued	—	138,424
Shares surrendered to AutoNation to satisfy tax withholding obligations in connection with the vesting of restricted stock	8,124	8,760