GM Financial Receivables Summary of Finance Receivables (Details) - GM Financial [Member] - USD ($) $ in Millions |
6 Months Ended | |||||
|---|---|---|---|---|---|---|
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
|
| Finance Receivables [Line Items] | ||||||
| Finance Receivables | $ 39,973 | $ 37,333 | ||||
| Less: Allowance for Loan Losses | (864) | $ (843) | (782) | $ (760) | $ (728) | $ (695) |
| GM Financial Receivables, net | 39,109 | 36,551 | ||||
| Fair value of GM Financial receivables | 39,510 | 36,707 | ||||
| Retail Finance Receivables [Member] | ||||||
| Finance Receivables [Line Items] | ||||||
| Finance Receivables | 30,861 | 29,124 | ||||
| Less: Allowance for Loan Losses | (814) | (735) | ||||
| GM Financial Receivables, net | 30,047 | 28,389 | ||||
| Commercial Finance Receivables [Member] | ||||||
| Finance Receivables [Line Items] | ||||||
| Finance Receivables | 9,112 | 8,209 | ||||
| Less: Allowance for Loan Losses | (50) | (47) | ||||
| GM Financial Receivables, net | $ 9,062 | $ 8,162 | ||||
| Commercial Finance Receivables [Member] | Level 2 [Member] | ||||||
| Finance Receivables [Line Items] | ||||||
| Maximum Maturity Period for Finance Receivables | 1 year |