Goodwill and Intangible Assets (Details)-K - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Changes in the carrying amount of goodwill
Balance of Goodwill at beginning of period		$ 1,893	$ 2,059	$ 2,079
Acquisitions		796
Translation effects		(200)	(166)	(20)
Balance of Goodwill at end of the period	$ 2,489	2,489	1,893	2,059
Impairment charge	0
Europe
Changes in the carrying amount of goodwill
Balance of Goodwill at beginning of period		926	1,044	1,006
Translation effects		(86)	(118)	38
Balance of Goodwill at end of the period	840	840	926	1,044
North America
Changes in the carrying amount of goodwill
Balance of Goodwill at beginning of period		723	734	743
Acquisitions		316
Translation effects		(19)	(11)	(9)
Balance of Goodwill at end of the period	1,020	1,020	723	734
Latin America
Changes in the carrying amount of goodwill
Balance of Goodwill at beginning of period		239	276	325
Acquisitions		480
Translation effects		(95)	(37)	(49)
Balance of Goodwill at end of the period	624	624	239	276
Other.
Changes in the carrying amount of goodwill
Balance of Goodwill at beginning of period		5	5	5
Balance of Goodwill at end of the period	5	5	5	5
Asia Pacific
Changes in the carrying amount of goodwill
Balance of Goodwill at end of the period	0	0
Accumulated impairment losses	$ 1,135	$ 1,135	$ 1,135	$ 1,135