Goodwill and Intangible Assets, Net (Schedule of Finite-Lived Intangible Assets, Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
Gross Asset Value
Acquisitions	$ 9	[1]
Exchange rate changes	0
Gross asset value	655			646
Accumulated Amortization
Amortization	(6)		(11)
Exchange rate changes	0
Accumulated amortization	(593)			(587)
Net book value	62
Weighted average life of intangible assets acquired	28 years
Licenses [Member]
Gross Asset Value
Acquisitions	0
Exchange rate changes	(1)
Gross asset value	32			33
Accumulated Amortization
Amortization	(1)
Exchange rate changes	0
Accumulated amortization	(21)			(20)
Net book value	11
Customer-Related Intangible Assets [Member]
Gross Asset Value
Acquisitions	0
Exchange rate changes	0
Gross asset value	544			544
Accumulated Amortization
Amortization	(4)
Exchange rate changes	0
Accumulated amortization	(525)			(521)
Net book value	19
Developed Technology [Member]
Gross Asset Value
Acquisitions	0
Exchange rate changes	1
Gross asset value	31			30
Accumulated Amortization
Amortization	(1)
Exchange rate changes	0
Accumulated amortization	(22)			(21)
Net book value	9
Covenants Not to Compete and Other [Member]
Gross Asset Value
Acquisitions	9
Exchange rate changes	0
Gross asset value	48			39
Accumulated Amortization
Amortization	0
Exchange rate changes	0
Accumulated amortization	(25)			(25)
Net book value	$ 23

[1] Represents intangible assets acquired related to Fairway with a weighted average amortization period of 28 years (Note 4).