Restructuring Related Activities Plan Optimization (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended		44 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012
Restructuring and Related Cost [Line Items]
Restructuring Charges	$ 54	$ 22	$ 93	$ 77	$ 92	$ 98	$ 313
Cash payments associated with restructuring initiatives	24		89				315
Cumulative restructuring charges							424
Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	5		28				99
Cumulative restructuring charges							131
Impairment of an asset in value [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges
Termination Benefits [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges	44	12	64	49
Cash payments associated with restructuring initiatives	13		49				141
Termination Benefits [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges			(1)		10	4
Restructuring Reserve, Accrual Adjustment			(1)
Cash payments associated with restructuring initiatives	4		21				26
Accelerated depreciation [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges
Transfer costs [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges
Cash payments associated with restructuring initiatives	1		7				73
Transfer costs [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	1		7				73
Other [Member]
Restructuring and Related Cost [Line Items]
Restructuring Charges	10	10	29	28
Cash payments associated with restructuring initiatives	10		33				101
Other [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives
Minimum [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Expected total costs associated with the plan	130
Restructuring plan estimated future cash outflow	110
Minimum [Member] | Restructuring Plan [Member] | Termination Benefits [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Expected total costs associated with the plan	35
Minimum [Member] | 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	20
Minimum [Member] | 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
Maximum [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Expected total costs associated with the plan	145
Restructuring plan estimated future cash outflow	120
Maximum [Member] | Restructuring Plan [Member] | Termination Benefits [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Expected total costs associated with the plan	40
Maximum [Member] | 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	25
Maximum [Member] | 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	$ 80