Financial Instruments Derivatives Designated as Hedging, Gain (Loss) Tables (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Reclassified from AOCI into Income (Effective Portion)	$ 15	[1]
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivatives (Effective Portion)	(7)		1	(32)
Amount of Loss Reclassified from AOCI into Income (Effective Portion)	(14)		(47)	(34)
Amount of Loss Recognized in Income on Derivatives (Ineffective Portion)	0		0	(1)
Designated as Hedging Instrument [Member] | Interest rate swap contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivatives (Effective Portion)	1		(4)	(13)
Amount of Loss Recognized in Income on Derivatives (Ineffective Portion)	0		0	0
Designated as Hedging Instrument [Member] | Interest rate swap contracts | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Reclassified from AOCI into Income (Effective Portion)	(9)		(38)	(39)
Designated as Hedging Instrument [Member] | Commodity contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivatives (Effective Portion)	(7)		7	(22)
Amount of Loss Recognized in Income on Derivatives (Ineffective Portion)	0			(1)
Designated as Hedging Instrument [Member] | Commodity contracts | Cost of goods sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Reclassified from AOCI into Income (Effective Portion)	(5)		(10)	5
Designated as Hedging Instrument [Member] | Commodity contracts | Other income, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Income on Derivatives (Ineffective Portion)			0
Designated as Hedging Instrument [Member] | Foreign currency contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Gain Recognized in OCI on Derivatives (Effective Portion)	(1)		(2)	3
Amount of Loss Recognized in Income on Derivatives (Ineffective Portion)	0		0	0
Designated as Hedging Instrument [Member] | Foreign currency contracts [Member] | Cost of goods sold
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Reclassified from AOCI into Income (Effective Portion)	$ 0		$ 1	$ 0

[1] Refer to Note 13, "Pension, Other Post-employment Benefits and Employee Benefit Plans," and Note 8, "Financial Instruments," for additional information with respect to reclassifications from accumulated other comprehensive loss to earnings relating to post-employment benefits, net of tax and hedge instruments, net of tax, respectively. Such items do not represent reclassifications in their entirety.