Nature of Operations and Basis of Presentation (Notes)	6 Months Ended
Jun. 30, 2016
Nature of Operations and Basis of Presentation [Abstract]
Nature Of Operations and Basis of Presentation [Text Block]	Nature of Operations and Basis of Presentation General Motors Company (sometimes referred to in this Quarterly Report on Form 10-Q as we, our, us, ourselves, the Company, General Motors or GM) designs, builds and sells cars, trucks, crossovers and automobile parts worldwide. We also provide automotive financing services through General Motors Financial Company, Inc. (GM Financial). We analyze the results of our business through the following segments: GM North America (GMNA), GM Europe (GME), GM International Operations (GMIO), GM South America (GMSA) and GM Financial. Nonsegment operations are classified as Corporate. Corporate includes certain centrally recorded income and costs, such as interest, income taxes and corporate expenditures and certain nonsegment specific revenues and expenses. The accompanying condensed consolidated financial statements have been prepared in conformity with U.S. GAAP pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) for interim financial information. Accordingly they do not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying condensed consolidated financial statements include all adjustments, which consist of normal recurring adjustments and transactions or events discretely impacting the interim periods, considered necessary by management to fairly state our results of operations, financial position and cash flows. The operating results for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our 2015 Form 10-K. Except for per share amounts or as otherwise specified, dollar amounts presented within tables are stated in millions. Effective January 1, 2016 we retrospectively adopted Accounting Standards Update (ASU) 2015-17, Balance Sheet Classification of Deferred Taxes, which requires all deferred tax assets and liabilities to be classified as non-current. As a result current Deferred income taxes and Accrued liabilities decreased by $8.6 billion and $249 million and non-current Deferred income taxes increased by $8.4 billion at December 31, 2015 in our condensed consolidated balance sheets. In February 2016 ASU 2016-02, Leases (ASU 2016-02) was issued which requires the lessee to recognize most leases on the balance sheet thereby resulting in the recognition of lease assets and liabilities for those leases currently classified as operating leases. The accounting for leases where we are the lessor is largely unchanged. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018 with early adoption permitted. We are currently assessing the impact ASU 2016-02 will have on our consolidated financial statements. In June 2016 ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13), was issued that requires entities to use a Current Expected Credit Loss model which is a new impairment model based on expected losses rather than incurred losses. Under this model, an entity would recognize an impairment allowance equal to its current estimate of all contractual cash flows that the entity does not expect to collect from financial assets measured at amortized cost. The entity's estimate would consider relevant information about past events, current conditions and reasonable and supportable forecasts, which will result in recognition of lifetime expected credit losses by GM Financial upon loan origination. ASU 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019 with early adoption permitted for annual reporting periods beginning after December 15, 2018. We are currently assessing the impact ASU 2016-13 will have on our consolidated financial statements.

Nature of Operations and Basis of Presentation

General Motors Company (sometimes referred to in this Quarterly Report on Form 10-Q as we, our, us, ourselves, the Company, General Motors or GM) designs, builds and sells cars, trucks, crossovers and automobile parts worldwide. We also provide automotive financing services through General Motors Financial Company, Inc. (GM Financial). We analyze the results of our business through the following segments: GM North America (GMNA), GM Europe (GME), GM International Operations (GMIO), GM South America (GMSA) and GM Financial. Nonsegment operations are classified as Corporate. Corporate includes certain centrally recorded income and costs, such as interest, income taxes and corporate expenditures and certain nonsegment specific revenues and expenses.

The accompanying condensed consolidated financial statements have been prepared in conformity with U.S. GAAP pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) for interim financial information. Accordingly they do not include all of the information and notes required by U.S. GAAP for complete financial statements. The accompanying condensed consolidated financial statements include all adjustments, which consist of normal recurring adjustments and transactions or events discretely impacting the interim periods, considered necessary by management to fairly state our results of operations, financial position and cash flows. The operating results for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in our 2015 Form 10-K. Except for per share amounts or as otherwise specified, dollar amounts presented within tables are stated in millions.

Effective January 1, 2016 we retrospectively adopted Accounting Standards Update (ASU) 2015-17, Balance Sheet Classification of Deferred Taxes, which requires all deferred tax assets and liabilities to be classified as non-current. As a result current Deferred income taxes and Accrued liabilities decreased by $8.6 billion and $249 million and non-current Deferred income taxes increased by $8.4 billion at December 31, 2015 in our condensed consolidated balance sheets.

In February 2016 ASU 2016-02, Leases (ASU 2016-02) was issued which requires the lessee to recognize most leases on the balance sheet thereby resulting in the recognition of lease assets and liabilities for those leases currently classified as operating leases. The accounting for leases where we are the lessor is largely unchanged. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018 with early adoption permitted. We are currently assessing the impact ASU 2016-02 will have on our consolidated financial statements.

In June 2016 ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13), was issued that requires entities to use a Current Expected Credit Loss model which is a new impairment model based on expected losses rather than incurred losses. Under this model, an entity would recognize an impairment allowance equal to its current estimate of all contractual cash flows that the entity does not expect to collect from financial assets measured at amortized cost. The entity's estimate would consider relevant information about past events, current conditions and reasonable and supportable forecasts, which will result in recognition of lifetime expected credit losses by GM Financial upon loan origination. ASU 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019 with early adoption permitted for annual reporting periods beginning after December 15, 2018. We are currently assessing the impact ASU 2016-13 will have on our consolidated financial statements.