Segment Information - Total Assets (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Assets
Total assets:	$ 9,780	$ 9,135	$ 9,667
Reportable Segment Totals
Assets
Total assets:	9,572	8,777	9,318
Europe
Assets
Total assets:	3,074	2,792	2,977
North America
Assets
Total assets:	2,781	2,522	2,562
Latin America
Assets
Total assets:	2,730	2,537	2,798
Asia Pacific
Assets
Total assets:	987	926	981
Other
Assets
Total assets:	$ 208	$ 358	$ 349