Consolidated Statement of Equity - Shares In Millions	Total		Common Stock	Treasury Stock
Number of shares held in treasury (beginning balance) at Dec. 31, 2012				(28)
Number of common shares issued (beginning balance) at Dec. 31, 2012			361
Number of shares issued - stock-based compensation			1
Number of shares repurchased	(31)			(31)
Number of shares held in treasury (ending balance) at Sep. 30, 2013				(59)
Number of common shares issued (ending balance) at Sep. 30, 2013			362
Number of shares held in treasury (beginning balance) at Dec. 31, 2013	(65)			(65)
Number of common shares issued (beginning balance) at Dec. 31, 2013	362		362
Number of shares issued - stock-based compensation			1
Number of shares repurchased	(17)	[1]		(17)
Number of shares held in treasury (ending balance) at Sep. 30, 2014	(82)			(82)
Number of common shares issued (ending balance) at Sep. 30, 2014	363		363

[1] The nine months ended September 30, 2013 includes one million shares received under the November 2012 accelerated share repurchase program, which were paid for in 2012.