Financing Arrangements and Derivative Financial Instruments Schedule of Fair Values for Foreign Currency Contracts Not Designated as Hedging Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Accounts Receivable
Derivative Instruments and Hedging Activities Disclosures
Fair Value - Accounts Receivable	$ 34		$ 20
Other Current Liabilities
Derivative Instruments and Hedging Activities Disclosures
Fair Value - Other Current Liabilities	(8)		(4)
Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures
Notional Amount - Foreign currency contracts not designated as hedging instruments	990		878
Net Transaction Gains (Losses) on Foreign Currency Contracts Not Designated as Hedging Instruments	$ 58	$ (8)