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GM Financial Receivables and Transactions Intercompany Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
GM Financial [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Financing receivable, net | $ 45,001 |  | $ 45,001 |  | $ 41,729
GM Financial [Member] | Commercial Finance Receivables [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Financing receivable, net | 10,261 |  | 10,261 |  | 9,904
GM Financial [Member] | Retail Finance Receivables [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Financing receivable, net | 34,740 |  | 34,740 |  | 31,825
Intersegment Eliminations [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Cash payments to GM Financial | 1,100 | $ 1,200 | 1,700 | $ 2,200 |
Intersegment Eliminations [Member] | GM Financial [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Subvention receivable | 735 |  | 735 |  | 306
Interest subvention earned on finance receivables | 137 | 122 | 267 | 232 |
Leased vehicle subvention earned | 813 | $ 754 | 1,611 | $ 1,460 |
Intersegment Eliminations [Member] | GM Financial [Member] | Commercial Finance Receivables [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Financing receivable, net | 379 |  | 379 |  | 355
Commercial loan funding payable | 75 |  | 75 |  | 90
Intersegment Eliminations [Member] | GM Financial [Member] | Retail Finance Receivables [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Financing receivable, net | $ 120 |  | $ 120 |  | $ 88

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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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