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) Income, Net of Tax [Member]	Non-controlling Interests [Member]
Beginning Balance at Dec. 31, 2014	$ 6,631	$ 5,100	$ 4,605	$ (3,134)	$ 60
Beginning Balance (in shares) at Dec. 31, 2014	280.0	280.0
Increase (Decrease) in Shareholders' Equity
Net income	341	0	328	0	13
Shares issued - employee benefit plans (in shares)		0.2
Shares issued - employee benefit plans	15	15	0	0	0
Shares issued - employee compensation (in shares)		4.0
Shares issued - employee compensation	(128)	(128)	0	0	0
Shares purchased (in shares)		(2.5)
Shares purchased	(250)	0	(250)	0	0
Tax benefit - employee benefit plans	102	102	0	0	0
Share-based compensation expense	90	90	0	0	0
Dividends to shareholders	(71)	0	(71)	0	0
Net change in fair value of investments	(1)	0	0	(1)	0
Net change in fair value of derivatives	6	0	0	6	0
Net foreign currency translation adjustments	(322)	0	0	(321)	(1)
Net post-retirement benefit obligation	23	0	0	23	0
Purchases of shares from noncontrolling interests	(4)	1	0	0	(5)
Dividends paid to noncontrolling interests on subsidiary common stock	(1)	0	0	0	(1)
Ending Balance at Mar. 31, 2015	$ 6,431	$ 5,180	$ 4,612	$ (3,427)	$ 66
Ending Balance (in shares) at Mar. 31, 2015	281.7	281.7