Consolidated Statements of Shareholders' Equity (unaudited) (USD $) In Millions	Total	Common Stock		Additional Paid in Capital		Accumulated Other Comprehensive Loss	Treasury Stock at Cost	Retained Earnings
Balance at Beginning of Period at Dec. 31, 2011	$ 7,265	$ 1,312		$ 1,841		$ (100)	$ (638)	$ 4,850
Net Income	776	0		0		0	0	776
Stock-based Compensation	51	0		51		0	0	0
Exercise of Stock Options	28	0		28		0	0	0
Tax Benefits Related to Exercise of Stock Options	14	0		14		0	0	0
Dividends	(119)	0		0		0	0	(119)
Changes in Treasury Stock, Net	(13)	0		0		0	(13)	0
Change in Par Value	0	(1,308)	[1]	1,308	[1]	0	0	0
Net Change in Pension and Other	6	0		0		6	0	0
Balance at End of Period at Sep. 30, 2012	8,008	4	[1]	3,242	[1]	(94)	(651)	5,507
Balance at Beginning of Period at Dec. 31, 2012	8,258	4		3,302		(113)	(648)	5,713
Net Income	843	0		0		0	0	843
Stock-based Compensation	59	0		59		0	0	0
Exercise of Stock Options	39	0		39		0	0	0
Tax Benefits Related to Exercise of Stock Options	15	0		15		0	0	0
Dividends	(146)	0		0		0	0	(146)
Changes in Treasury Stock, Net	(14)	0		0		0	(14)	0
Net Change in Pension and Other	10	0		0		10	0	0
Balance at End of Period at Sep. 30, 2013	$ 9,064	$ 4		$ 3,415		$ (103)	$ (662)	$ 6,410

[1] Amounts restated to reflect impact of 2-for-1 stock split