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Stockholders' deficit (Tables)
 12 Months Ended
Oct. 31, 2011
Stockholders' Equity Note [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Accumulated other comprehensive loss consists of the following as of October 31:
 
 
2011
 
2010
 
2009
(in millions)
 
 
 
 
 
 
Postretirement and other postemployment benefits
 
(2,045
)
 
(1,316
)
 
(1,788
)
Foreign currency translation adjustments
 
101

 
120

 
98

Accumulated other comprehensive loss
 
(1,944
)
 
(1,196
)
 
(1,690
)