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GM Financial Receivables (Tables) - GM Financial [Member] | 6 Months Ended
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Jun. 30, 2016
Finance Receivables [Line Items] |
GM Financial Receivables [Table Text Block] |
| June 30, 2016 |  | December 31, 2015
| Retail |  | Commercial |  | Total |  | Retail |  | Commercial |  | Total
Finance receivables | $ | 30,861 |  |  | $ | 9,112 |  |  | $ | 39,973 |  |  | $ | 29,124 |  |  | $ | 8,209 |  |  | $ | 37,333 |
Less: allowance for loan losses | (814 | ) |  | (50 | ) |  | (864 | ) |  | (735 | ) |  | (47 | ) |  | (782 | )
GM Financial receivables, net | $ | 30,047 |  |  | $ | 9,062 |  |  | $ | 39,109 |  |  | $ | 28,389 |  |  | $ | 8,162 |  |  | $ | 36,551 |
Fair value of GM Financial receivables |  |  |  |  | $ | 39,510 |  |  |  |  |  |  | $ | 36,707 |
Allowance for Loan Losses [Table Text Block] |
| Three Months Ended |  | Six Months Ended
| June 30, 2016 |  | June 30, 2015 |  | June 30, 2016 |  | June 30, 2015
Allowance for loan losses at beginning of period | $ | 843 |  |  | $ | 728 |  |  | $ | 782 |  |  | $ | 695 |
Provision for loan losses | 151 |  |  | 141 |  |  | 347 |  |  | 296 |
Charge-offs | (266 | ) |  | (220 | ) |  | (559 | ) |  | (454 | )
Recoveries | 133 |  |  | 109 |  |  | 283 |  |  | 233 |
Effect of foreign currency | 3 |  |  | 2 |  |  | 11 |  |  | (10 | )
Allowance for loan losses at end of period | $ | 864 |  |  | $ | 760 |  |  | $ | 864 |  |  | $ | 760 |
Retail Finance Receivables [Member] |
Finance Receivables [Line Items] |
Retail Finance Receivables Delinquency [Table Text Block] | The following table summarizes the contractual amount of delinquent contracts, which was not significantly different than the recorded investment of the retail finance receivables:
| June 30, 2016 |  | June 30, 2015
| Amount |  | Percent of Contractual Amount Due |  | Amount |  | Percent of Contractual Amount Due
31-to-60 days delinquent | $ | 1,070 |  |  | 3.4 | % |  | $ | 1,062 |  |  | 3.6 | %
Greater-than-60 days delinquent | 465 |  |  | 1.5 | % |  | 452 |  |  | 1.6 | %
Total finance receivables more than 30 days delinquent | 1,535 |  |  | 4.9 | % |  | 1,514 |  |  | 5.2 | %
In repossession | 51 |  |  | 0.2 | % |  | 46 |  |  | 0.2 | %
Total finance receivables more than 30 days delinquent or in repossession | $ | 1,586 |  |  | 5.1 | % |  | $ | 1,560 |  |  | 5.4 | %
Commercial Finance Receivables [Member] |
Finance Receivables [Line Items] |
Commercial Finance Receivables Credit Quality [Table Text Block] | The following table summarizes the credit risk profile by dealer grouping of commercial finance receivables:
| June 30, 2016 |  | December 31, 2015
Group I – Dealers with superior financial metrics | $ | 1,274 |  |  | $ | 1,298 |
Group II – Dealers with strong financial metrics | 3,008 |  |  | 2,573 |
Group III – Dealers with fair financial metrics | 2,903 |  |  | 2,597 |
Group IV – Dealers with weak financial metrics | 1,140 |  |  | 1,058 |
Group V – Dealers warranting special mention due to potential weaknesses | 596 |  |  | 501 |
Group VI – Dealers with loans classified as substandard, doubtful or impaired | 191 |  |  | 182 |
| $ | 9,112 |  |  | $ | 8,209 |

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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 55 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=32702940&loc=SL6953803-111525 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953659-111524 + Details
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- Definition Tabular disclosure of financing receivables that are past due but not impaired, financing receivables that are 90 days past due and still accruing, and financing receivables on nonaccrual status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953401-111524 + Details
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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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