Restructuring Related Activities Plan Optimization (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended	41 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Jun. 30, 2012
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	$ 30	$ 65	$ 291
Cumulative restructuring charges			366
Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	8	23	94
Cumulative restructuring charges			129
Termination Benefits [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	15	36	129
Termination Benefits [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	6	17	23
Transfer costs [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	2	6	71
Transfer costs [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	2	6	71
Other [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	13	23	91
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