Segment Information (Details 2) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Assets
Total assets:	$ 8,158	$ 8,419	$ 8,472
Reportable Segment Totals
Assets
Total assets:	7,845	8,121	8,249
Europe
Assets
Total assets:	3,415	3,509	3,515
North America
Assets
Total assets:	2,030	1,995	2,007
South America
Assets
Total assets:	1,358	1,467	1,499
Asia Pacific
Assets
Total assets:	1,042	1,150	1,228
Other
Assets
Total assets:	$ 313	$ 298	$ 223