Derivative Instruments (Details Textual) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Derivative Instruments (Textual) [Abstract]
Typical hedging period	2 years
Net asset position of derivatives	$ 3
Collateral provided to counterparties related to derivatives		1
Commodity contracts [Member]
Derivative Instruments (Textual) [Abstract]
Derivative, Nonmonetary Notional Amount	19,000,000
Loss on cash flow hedge ineffectiveness	0
Unrealized gain on derivative contracts not designated as cash flow hedges	1
Foreign exchange contracts [Member]
Derivative Instruments (Textual) [Abstract]
Loss on cash flow hedge ineffectiveness	0
Notional amounts of foreign exchange forward contracts	42
Foreign currency cash flow hedge asset at fair value	3
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] | Commodity contracts [Member]
Derivative Instruments (Textual) [Abstract]
Unrealized gain that remained in AOCI from cash flow hedges, net of tax	$ 2