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, 2010		$ 561	$ 1,185	$ 7,436	$ (2,300)	$ (514)	$ 47
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			(50)
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact			(10)
Purchase of subsidiary shares from non-controlling interests			(2)
Net income attributable to the Company	737			737
Dividend equivalents declared (per share amounts: $0.90 in 2012 and $0.86 in 2011)				(11)
Dividends declared – (per share amounts: $0.90 in 2012 and $0.86 in 2011)				(466)
Foreign currency translation adjustments	(113)				(113)
Unrealized investment holding losses, net of reclassification adjustments	(5)				(5)
Net changes under benefit plans, net of tax	85				85
Issuance of shares under stock compensation plans and employee stock purchase plans						235
Purchase of treasury shares						(361)
Net Income attributable to non-controlling interests	(18)						18
Distributions							0
Other changes							(7)
Balance, end of period at Sep. 30, 2011	6,465		1,123	7,696	(2,333)	(640)	58
Balance, beginning of year at Dec. 31, 2011	5,940	561	1,156	7,949	(3,188)	(595)	57
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Change in accrued stock compensation costs			(45)
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			1
Net income attributable to the Company	917			917
Dividend equivalents declared (per share amounts: $0.90 in 2012 and $0.86 in 2011)				(6)
Dividends declared – (per share amounts: $0.90 in 2012 and $0.86 in 2011)				(489)
Foreign currency translation adjustments	152				152
Unrealized investment holding losses, net of reclassification adjustments	(2)				(2)
Net changes under benefit plans, net of tax	33				33
Issuance of shares under stock compensation plans and employee stock purchase plans						282
Purchase of treasury shares						(180)
Net Income attributable to non-controlling interests	(21)						21
Distributions	(5)						(5)
Other changes							(3)
Balance, end of period at Sep. 30, 2012	$ 6,580		$ 1,076	$ 8,371	$ (3,005)	$ (493)	$ 70