Derivative Instruments (Details 1) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 6	$ 5
Derivative Liabilities	5	0
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	5	3
Derivative Liabilities	5	0
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	1	2
Derivative Liabilities	0	0
Not Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Other current assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	1	2
Not Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Accrued expenses [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Other current assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	4	2
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Accrued expenses [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	1	0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Commodity contracts [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	2	0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member] | Other current assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	1	1
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member] | Other assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member] | Accrued expenses [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	1	0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member] | Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 1	$ 0