Consolidated Statements Of Equity And Comprehensive Income (USD $) In Millions, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Shares [Member]	Non-Controlling Interests [Member]
Balance, beginning of year at Dec. 31, 2011		$ 561	$ 1,156	$ 7,949	$ (3,188)	$ (595)	$ 57
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			(79)
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact			(25)
Purchase of subsidiary shares from non-controlling interests			1
Net income attributable to the Company	676			676
Dividend equivalents declared (per share amounts: $0.71 in 2013 and $0.67 in 2012)				(4)
Dividends declared – (per share amounts: $0.71 in 2013 and $0.67 in 2012)				(364)
Other comprehensive income (loss), net of tax	73				73
Issuance of shares under stock compensation plans and employee stock purchase plans						212
Purchase of treasury shares						(100)
Net Income attributable to non-controlling interests	(15)						15
Other changes							(1)
Balance, end of period at Jun. 30, 2012	6,344		1,053	8,257	(3,115)	(483)	71
Balance, beginning of year at Dec. 31, 2012	6,606	561	1,107	8,628	(3,307)	(447)	64
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			(69)
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact			(36)
Purchase of subsidiary shares from non-controlling interests			0
Net income attributable to the Company	801			801
Dividend equivalents declared (per share amounts: $0.71 in 2013 and $0.67 in 2012)				(3)
Dividends declared – (per share amounts: $0.71 in 2013 and $0.67 in 2012)				(390)
Other comprehensive income (loss), net of tax	(128)				(128)
Issuance of shares under stock compensation plans and employee stock purchase plans						312
Purchase of treasury shares						(250)
Net Income attributable to non-controlling interests	(18)						18
Other changes							(15)
Balance, end of period at Jun. 30, 2013	$ 6,846		$ 1,002	$ 9,036	$ (3,435)	$ (385)	$ 67