v2.4.0.6
Finance Receivables, Net Summary of Finance Receivables, Net (Details) (GM Financial [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Dec. 31, 2011
Dec. 31, 2010
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Notes, Loans and Financing Receivable, Net, Current $ 3,314   $ 3,251  
Pre-Acquisition Finance Receivables Outstanding Balance 3,675   4,366  
Pre-Acquisition Finance Receivables, Carrying Value 3,358   4,027 7,299
Post-Acquisition Finance Receivables, Carrying Value 6,326   5,314 924
Finance Receivables, Carrying Value 9,684 8,341 9,341  
Allowance for Notes, Loans and Financing Receivable (208)   (179)  
Notes, Loans and Financing Receivable, Net 9,476   9,162  
Finance Receivables Purchased 1,396 1,138    
Financing Receivable, Allowance for Credit Losses, Charge-offs (51) (2)    
Principal Collection and Recoveries on Receivables (920) (852)    
Change in Carrying Value Adjustment (82) (166)    
Notes, Loans and Financing Receivable, Net, Noncurrent 6,162   5,911  
Carrying (Reported) Amount, Fair Value Disclosure [Member]
       
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Notes, Loans and Financing Receivable, Net 9,476   9,162  
Estimate of Fair Value, Fair Value Disclosure [Member]
       
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Notes, Loans and Financing Receivable, Net $ 9,760   $ 9,386