Shareholders' Equity (Changes in Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			$ (187)	$ 163
Other comprehensive loss before reclassifications			(333)	(190)
Reclassifications			90	(36)
Other Comprehensive Income (Loss)	(207)	96	(243)	(226)
Ending balance	(430)	(63)	(430)	(63)
Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(140)	213
Other comprehensive loss before reclassifications			(333)	(190)
Reclassifications			90	(37)
Other Comprehensive Income (Loss)			(243)	(227)
Ending balance	(383)	(14)	(383)	(14)
Defined Benefit Pension [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(38)	(40)
Other comprehensive loss before reclassifications			0	0
Reclassifications			0	1
Other Comprehensive Income (Loss)			0	1
Ending balance	(38)	(39)	(38)	(39)
Deferred Loss on Derivatives [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(9)	(10)
Other comprehensive loss before reclassifications			0	0
Reclassifications			0	0
Other Comprehensive Income (Loss)			0	0
Ending balance	$ (9)	$ (10)	$ (9)	$ (10)