Consolidated Statements of Shareholders' Equity (USD $) In Millions, unless otherwise specified	Total	Ordinary Shares and Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss, Net of Tax [Member]	Noncontrolling Interests [Member]
Balance at Dec. 31, 2010	$ 8,306	$ 4,386	$ 7,861	$ (2,079)	$ (1,917)	$ 55
Balance (in shares) at Dec. 31, 2010		385.9
Increase (Decrease) in Shareholders' Equity
Net income	1,010		979			31
Shares issued - employee benefit plans (in shares)		0.5
Shares issued — employee benefit plans	112	113	(1)
Shares purchased	(828)			(828)
Shares reissued — employee benefit plans	(45)	(354)	(45)	354
Tax benefit — employee benefit plans	36	36
Share-based compensation expense	235	235
Dividends to shareholders	(200)		(200)
Net change in fair value of investments	0
Change in net derivative gains/losses	(13)				(13)
Net foreign currency translation adjustments	(43)				(44)	1
Net post-retirement benefit obligation	(396)				(396)
Purchase of subsidiary shares from non-controlling interest	(24)	(9)				(15)
Dividends paid to non-controlling interests on subsidiary common stock	(30)					(30)
Balance at Dec. 31, 2011	8,120	4,407	8,594	(2,553)	(2,370)	42
Balance (in shares) at Dec. 31, 2011		386.4
Increase (Decrease) in Shareholders' Equity
Net income	1,020		993			27
Retirement of treasury shares (in shares)		(60.0)
Retirement of treasury shares		(60)	(2,412)	2,472
Shares issued - employee benefit plans (in shares)		4.0
Shares issued — employee benefit plans	29	29
Shares purchased (in shares)		(20.0)
Shares purchased	(1,125)		(1,025)	(100)
Shares reissued — employee benefit plans	(13)	(181)	(13)	181
Tax benefit — employee benefit plans	33	33
Share-based compensation expense	212	212
Dividends to shareholders	(204)		(204)
Net change in fair value of investments	0
Change in net derivative gains/losses	9				9
Net foreign currency translation adjustments	109				109
Net post-retirement benefit obligation	(358)				(358)
Purchase of subsidiary shares from non-controlling interest		(1)				1
Dividends paid to non-controlling interests on subsidiary common stock	(27)					(27)
Balance at Dec. 31, 2012	7,805	4,439	5,933	0	(2,610)	43
Balance (in shares) at Dec. 31, 2012	310.9	310.9
Increase (Decrease) in Shareholders' Equity
Net income	1,148		1,113			35
Shares issued - employee benefit plans (in shares)		0.7
Shares issued — employee benefit plans	27	28	(1)
Shares issued - employee compensation (in shares)		5.9
Shares issued — employee compensation	(50)	(50)
Shares purchased (in shares)		(16.8)
Shares purchased	(1,102)		(1,102)
Tax benefit — employee benefit plans	74	74
Share-based compensation expense	300	300
Dividends to shareholders	(212)		(212)
Net change in fair value of investments	1				1
Change in net derivative gains/losses	6				6
Net foreign currency translation adjustments	(65)				(64)	(1)
Net post-retirement benefit obligation	293				293
Purchase of subsidiary shares from non-controlling interest	(11)	(3)				(8)
Dividends paid to non-controlling interests on subsidiary common stock	(19)					(19)
Balance at Dec. 31, 2013	$ 8,195	$ 4,788	$ 5,731	$ 0	$ (2,374)	$ 50
Balance (in shares) at Dec. 31, 2013	300.7	300.7