Segment Information - Total Assets (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Assets
Total assets:	$ 9,459	$ 9,135	$ 9,688
Reportable Segment Totals
Assets
Total assets:	9,289	8,777	9,385
Europe
Assets
Total assets:	2,858	2,792	3,047
North America
Assets
Total assets:	2,742	2,522	2,550
Latin America
Assets
Total assets:	2,691	2,537	2,855
Asia Pacific
Assets
Total assets:	998	926	933
Other.
Assets
Total assets:	$ 170	$ 358	$ 303