Condensed Consolidated Statement of Shareholders' Equity (USD $) In Millions, unless otherwise specified	Total	Ordinary Shares and Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss, Net of Tax [Member]	Non-controlling Interests [Member]
Beginning Balance at Dec. 31, 2012	$ 7,805	$ 4,439	$ 5,933	$ (2,610)	$ 43
Beginning Balance (in shares) at Dec. 31, 2012	310.9	310.9
Increase (Decrease) in Shareholders' Equity
Net income	524		502		22
Shares issued - employee benefit plans (in shares)		0.5
Shares issued - employee benefit plans	16	16
Shares issued - employee compenation (in shares)		4.6
Shares issued - employee compensation	(57)	(57)
Shares purchased (in shares)		(8.5)
Shares purchased	(525)		(525)
Tax benefit - employee benefit plans	35	35
Share-based compensation expense	137	137
Dividends to shareholders	(105)		(105)
Net change in fair value of investments	13			13
Net change in fair value of derivatives	(21)			(21)
Net foreign currency translation adjustments	(234)			(232)	(2)
Net post-retirement benefit obligation	41			41
Purchase of subsidiary shares from non-controlling interests	(6)	(7)			1
Dividends paid to non-controlling interests on subsidiary common stock	(5)				(5)
Ending Balance at Jun. 30, 2013	$ 7,618	$ 4,563	$ 5,805	$ (2,809)	$ 59
Ending Balance (in shares) at Jun. 30, 2013	307.5	307.5