Annual report pursuant to Section 13 and 15(d)

Allocation of Finance Receivables Portfolio by Risk Rating Category (Detail)

v2.4.0.6
Allocation of Finance Receivables Portfolio by Risk Rating Category (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables $ 351 $ 511
U.S. Government guaranteed
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 62  
Acceptable risk
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 270  
Sub-standard risk
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 10  
Classified
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 9  
Commercial term loans
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 197 266
Commercial term loans | U.S. Government guaranteed
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 62  
Commercial term loans | Acceptable risk
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 119  
Commercial term loans | Sub-standard risk
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 7  
Commercial term loans | Classified
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 9  
Other financing receivables
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 154 245
Other financing receivables | Acceptable risk
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables 151  
Other financing receivables | Sub-standard risk
   
Financing Receivable, Recorded Investment [Line Items]    
Finance receivables $ 3