Stock Repurchase Programs (Tables)

9 Months Ended

Sep. 30, 2013

Stock Repurchase Programs [Abstract]

Summary of stock repurchase activity under stock repurchase program

The stock repurchase activity under our stock repurchase program during the nine months ended September 30, 2013 is summarized as follows:

	Shares Repurchased	Average Price per Share		Value of Shares Repurchased		Remaining Amount Authorized
	(In millions, except per share amounts)
Balance as of January 1, 2013	—	$	51.89	$	17	$	1,983
Repurchase of shares of common stock	20	54.95		1,088		(1,088		)
Balance as of September 30, 2013	20	$	54.90	$	1,105	$	895