Goodwill (Schedule of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended				9 Months Ended		9 Months Ended		9 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2013 North America	Dec. 31, 2013 North America	Sep. 30, 2013 MENA/ Asia Pacific	Dec. 31, 2013 MENA/ Asia Pacific	Sep. 30, 2013 Europe/ SSA/ Russia	Dec. 31, 2013 Europe/ SSA/ Russia	Sep. 30, 2013 Latin America	Dec. 31, 2013 Latin America	Dec. 31, 2013 As Reported [Member]	Dec. 31, 2013 As Reported [Member] North America	Dec. 31, 2013 As Reported [Member] MENA/ Asia Pacific	Dec. 31, 2013 As Reported [Member] Europe/ SSA/ Russia	Dec. 31, 2013 As Reported [Member] Latin America	Dec. 31, 2013 Reclassification to current assets held for sale [Member]	Dec. 31, 2013 Reclassification to current assets held for sale [Member] North America	Dec. 31, 2013 Reclassification to current assets held for sale [Member] MENA/ Asia Pacific	Dec. 31, 2013 Reclassification to current assets held for sale [Member] Europe/ SSA/ Russia	Dec. 31, 2013 Reclassification to current assets held for sale [Member] Latin America
Goodwill [Line Items]
Goodwill Impairment	$ (4)	$ 121	$ 0	$ 121	$ 0
Goodwill [Roll Forward]
Beginning Balance				3,489			2,197		201		770		321	3,709	2,243	209	912	345	(220)	(46)	(8)	(142)	(24)
Impairment					(26)	0		0		(26)		0
Acquisitions					6	0		6		0		0
Purchase price and other adjustments					(6)	1		0		7		(14)
Foreign currency translation adjustments					(88)	(42)		(1)		(41)		(4)
Ending Balance	$ 3,375		$ 3,375	$ 3,375	$ 3,375	$ 2,156	$ 2,197	$ 206	$ 201	$ 710	$ 770	$ 303	$ 321	$ 3,709	$ 2,243	$ 209	$ 912	$ 345	$ (220)	$ (46)	$ (8)	$ (142)	$ (24)