Financing Arrangements and Derivative Financial Instruments Schedule of Classification of Changes in Fair Values of Foreign Currency Contracts (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosures
Amounts deferred to Accumulated Other Comprehensive Loss (AOCL)	$ (7)	$ (12)	$ (19)	$ (10)
Amount of deferred (gain) loss reclassified from AOCL into CGS	(7)	1	(23)	1
Deferred Gains to be Reclassified within Twelve Months			9
Gain (Loss) on Components Excluded from Assessment of Foreign Currency Cash Flow Hedge Effectiveness	$ 0	$ 0	$ 1	$ 1