Financing Arrangements and Derivative Financial Instruments - Schedule of Fair Values for Foreign Currency Contracts (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Accounts receivable
Derivative Instruments and Hedging Activities Disclosures
Fair value - accounts receivable, not designated as hedging instruments	$ 4		$ 10
Fair value - accounts receivable, designated as hedging instruments	1		5
Other current liabilities
Derivative Instruments and Hedging Activities Disclosures
Fair value - other current liabilities, not designated as hedging instruments	(31)		(10)
Fair value - other current liabilities, designated as hedging instruments	(5)		(1)
Not Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures
Foreign currency derivatives, notional amount	1,188		1,094
Foreign currency derivatives, net transaction gains (losses)	(23)	$ 58
Designated as Hedging Instrument
Derivative Instruments and Hedging Activities Disclosures
Foreign currency derivatives, notional amount	$ 156		$ 168