Annual report pursuant to Section 13 and 15(d)

Summary of Finance Receivables (Detail)

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Summary of Finance Receivables (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Finance receivables $ 351 $ 511  
Less: Allowance for credit losses (16) (20) (31)
Finance receivables net 335 491  
Commercial term loans
     
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Finance receivables 197 266  
Other financing receivables
     
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Finance receivables $ 154 $ 245