Restructuring Related Activities Plan Optimization (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		53 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013
Restructuring and Related Cost [Line Items]
Restructuring Charges	$ 26	$ 28	$ 36	$ 39	$ 391
Cash payments associated with restructuring initiatives	24		71		446
Cumulative restructuring charges					521
Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Expected total costs associated with the plan	130		130
Cash payments associated with restructuring initiatives	0		1		103
Cumulative restructuring charges					127
Impairment of an asset in value [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges	0	0	(16)	0
Termination Benefits [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges	13	22	21	20
Cash payments associated with restructuring initiatives	11		34		216
Termination Benefits [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges			(4)
Cash payments associated with restructuring initiatives	0		1		30
Accelerated depreciation [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges	0	0	0	0
Transfer costs [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges	0	0	0	0
Cash payments associated with restructuring initiatives	0		0		73
Transfer costs [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	0		0		73
Other [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges	13	6	31	19
Cash payments associated with restructuring initiatives	13		37		157
Other [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	0		0		0
Restructuring Plan [Member] | Termination Benefits [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Expected total costs associated with the plan			33
Restructuring Related To Plan [Member] | Accelerated depreciation [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Expected total costs associated with the plan			22
Restructuring Related To Plan [Member] | Transfer costs [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Expected total costs associated with the plan			75
Minimum [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Restructuring plan estimated future cash outflow	105
Maximum [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Restructuring plan estimated future cash outflow	$ 110