Segment Information (Reconciliation to Consolidated Income Statements) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Information
Total segment PTOI	$ 1,955	$ 1,777	$ 4,203	$ 4,018
Non operating pension and other post retirement employee benefit costs	(34)	(126)	(64)	(273)
Net exchange (losses) gains, including affiliates	(109)	35	(205)	46
Corporate expenses	(278)	(206)	(495)	(420)
Interest expense	(94)	(115)	(197)	(232)
Income from continuing operations before income taxes	$ 1,440	$ 1,365	$ 3,242	$ 3,139