| Entity Registrant Name | GENERAL MOTORS COMPANY |
| CIK | 0001467858 |
| Accession number | 0001467858-14-000043 |
| Link to XBRL instance | http://www.sec.gov/Archives/edgar/data/1467858/000146785814000043/gm-20131231.xml |
| Fiscal year end | --12-31 |
| Fiscal year focus | 2013 |
| Fiscal period focus | Q4 |
| Current balance sheet date | 2013-12-31 |
| Current year-to-date income statement start date | 2013-01-01 |
| Commentary | Issue related to intangible assets. |
| Level 3 Text Block concept | us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock |
The following table summarizes the components of temporary differences and carryforwards that give rise to deferred tax assets and liabilities (dollars in millions):
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Level 4 Details Key Concepts: Deferred tax assets (liabilities)
| Description | Fact value | US GAAP XBRL Concept |
|---|---|---|
| Deferred tax assets, gross | 43,301,000,000 | us-gaap:DeferredTaxAssetsGross |
| Valuation allowance | -10,823,000,000 | us-gaap:DeferredTaxAssetsValuationAllowance |
| Deferred tax assets, net | 32,478,000,000 | us-gaap:DeferredTaxAssetsNet |
| Deferred tax liabilities | 0 | |
| Deferred tax assets (liabilities), net | 32,081,000,000 | us-gaap:DeferredTaxAssetsLiabilitiesNet |
| CHECK | -397,000,000 |
(Classified balance sheet) Deferred tax assets (liabilities), net components current/noncurrent asset/liability
| Description | Fact value | US GAAP XBRL Concept |
|---|---|---|
| Deferred tax assets, net, current | 0 | |
| Deferred tax assets, net, noncurrent | 0 | |
| Deferred tax liabilities, net, current | 0 | |
| Deferred tax liabilities, net, noncurrent | 0 | |
| Deferred tax assets (liabilities), net | 32,081,000,000 | us-gaap:DeferredTaxAssetsLiabilitiesNet |
| CHECK | 32,081,000,000 |
(Unclassified balance sheet) Deferred tax assets (liabilities), net components asset/liability
| Description | Fact value | US GAAP XBRL Concept |
|---|---|---|
| Deferred tax assets | 32,478,000,000 | |
| Deferred tax liabilities, net | 0 | |
| Deferred tax assets (liabilities), net | 32,081,000,000 | us-gaap:DeferredTaxAssetsLiabilitiesNet |
| CHECK | -397,000,000 |
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