v2.4.0.6
Finance Receivables, Net Delinquency (Details) (GM Financial [Member], USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Mar. 31, 2011
GM Financial [Member]
    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Financing Receivable, Recorded Investment, 31 to 60 Days Past Due $ 318 $ 333
Financing receivables 31 to 60 days past due - percent of contractual amount due 3.20% 3.80%
Financing Receivable, Recorded Investment, Greater than 60 Days Past Due 125 135
Financing Receivables Greater than 60 Days Past Due - percent of contractual amount due 1.20% 1.50%
Financing Receivable, Recorded Investment, Greater than 30 Days Past Due 443 468
Financing Receivable Greater than 30 Days Past Due - percent of contractual amount due 4.40% 5.30%
Financing Receivable in Repossesion 25 26
Financing Receivables in Repossesion - percent of contractual amount due 0.30% 0.30%
Total Financing Receivables More Than 30 Days Delinquent and in Repossession $ 468 $ 494
Total Financing Receivables More Than 30 Days Delinquent and in Repossession - percent of contractual amount due 4.70% 5.60%