Stock Repurchase Programs (Tables)

12 Months Ended

Dec. 31, 2014

Stock Repurchase Programs [Abstract]

Summary of stock repurchase activity under stock repurchase program

The stock repurchase activity under our stock repurchase programs during 2014 is summarized as follows:

	Shares Repurchased	Average Price per Share (1)		Value of Shares Repurchased		Remaining Amount Authorized
	(In millions, except per share amounts)
Balance at January 1, 2014	25	$	54.30	$	1,360	$	640
Authorization of additional plan in January 2014	—	—		—		5,000
Repurchase of shares of common stock	88	52.64		4,655		(4,655		)
Balance at December 31, 2014	113	$	53.01	$	6,015	$	985

(1) Stock repurchase activity excludes broker commissions.