Restructuring Related Activities Plan Optimization (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	38 Months Ended
	Mar. 31, 2012	Mar. 31, 2012
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	$ 36	$ 259
Cumulative restructuring charges		335
Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	15	85
Cumulative restructuring charges		127
Termination Benefits [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	22	112
Termination Benefits [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	11	14
Transfer costs [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	4	71
Transfer costs [Member] | Plant Network Optimization [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	4	71
Other [Member]
Restructuring and Related Cost [Line Items]
Cash payments associated with restructuring initiatives	10	76
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