Segment Information Assets by Segment (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total Assets	$ 24,888	$ 24,017
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Total Assets	127	129
North America
Segment Reporting Information [Line Items]
Total Assets	20,818	19,961
Europe
Segment Reporting Information [Line Items]
Total Assets	1,639	1,796
Latin America
Segment Reporting Information [Line Items]
Total Assets	$ 2,304	$ 2,131