v2.4.0.6
Cost savings initiatives and restructuring Cost savings initiatives and restructuring (Details Textual) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Cost Savings Initiatives (Textuals) [Line Items]      
Impairment of fixed assets $ 178 $ 6 $ 118
Manufacturing operations optimization [Member] | Other operating expenses [Member]
     
Cost Savings Initiatives (Textuals) [Line Items]      
Impairment of fixed assets     118
Manufacturing operations optimization [Member] | Cost of sales excludes amortization of certain acquired intangible assets [Member]
     
Cost Savings Initiatives (Textuals) [Line Items]      
Impairment of fixed assets to be disposed of 118    
Incremental depreciation in excess of what otherwise would have been recorded 42 42  
Charges related to lease period beyond supply period   23  
Other cost savings initiative [Member] | Other operating expenses [Member]
     
Cost Savings Initiatives (Textuals) [Line Items]      
Severance and leave termination costs 175    
Charges primarily related to severance   $ 109