Restructuring Related Activities (Details) (USD $) In Millions	3 Months Ended
	Jun. 30, 2011
Restructuring charges [Member] | 2007 Restructuring Plan [Member] | Minimum [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	$ 125
Restructuring charges [Member] | 2007 Restructuring Plan [Member] | Minimum [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	20
Restructuring charges [Member] | 2007 Restructuring Plan [Member] | Maximum [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	150
Restructuring charges [Member] | 2007 Restructuring Plan [Member] | Maximum [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	40
Restructuring charges [Member] | 2010 Restructuring Plan [Member] | Minimum [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	95
Restructuring charges [Member] | 2010 Restructuring Plan [Member] | Minimum [Member] | Fixed asset write-offs [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	10
Restructuring charges [Member] | 2010 Restructuring Plan [Member] | Minimum [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	50
Restructuring charges [Member] | 2010 Restructuring Plan [Member] | Maximum [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	100
Restructuring charges [Member] | 2010 Restructuring Plan [Member] | Maximum [Member] | Fixed asset write-offs [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	15
Restructuring charges [Member] | 2010 Restructuring Plan [Member] | Maximum [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	55
Restructuring charges [Member] | Plant Network Optimization [Member] | Minimum [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	30
Restructuring charges [Member] | Plant Network Optimization [Member] | Maximum [Member] | Termination Benefits [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	35
Minimum [Member] | Restructuring-related expenses [Member] | 2010 Restructuring Plan [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	165
2010 Restructuring Plan [Member] | Maximum [Member] | Restructuring-related expenses [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	185
Restructuring-related expenses [Member] | 2007 Restructuring Plan [Member] | Minimum [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	10
Restructuring-related expenses [Member] | 2007 Restructuring Plan [Member] | Maximum [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	20
Restructuring-related expenses [Member] | 2010 Restructuring Plan [Member] | Minimum [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	10
Restructuring-related expenses [Member] | 2010 Restructuring Plan [Member] | Maximum [Member] | Other [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	15
Restructuring-related expenses [Member] | Plant Network Optimization [Member] | Minimum [Member] | Accelerated depreciation [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	20
Restructuring-related expenses [Member] | Plant Network Optimization [Member] | Minimum [Member] | Transfer costs [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	80
Restructuring-related expenses [Member] | Plant Network Optimization [Member] | Maximum [Member] | Accelerated depreciation [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	25
Restructuring-related expenses [Member] | Plant Network Optimization [Member] | Maximum [Member] | Transfer costs [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	85
2007 Restructuring Plan [Member] | Minimum [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	155
Plant Network Optimization [Member] | Minimum [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	130
2007 Restructuring Plan [Member] | Maximum [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	210
Plant Network Optimization [Member] | Maximum [Member]
Estimated costs of restructuring program by major type of cost
Expected total costs associated with the plan	$ 145