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Marketable and Other Securities (Tables) | 12 Months Ended
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Dec. 31, 2018
Marketable Securities [Abstract] |
Investments Classified by Contractual Maturity Date | The following table summarizes the fair value of cash equivalents and marketable debt and equity securities which approximates cost:
| Fair Value Level |  | December 31, 2018 |  | December 31, 2017
Cash and cash equivalents |  |  |  |  |
Cash and time deposits(a) |  |  | $ | 7,254 |  |  | $ | 6,962 |
Available-for-sale debt securities |  |  |  |  |
U.S. government and agencies | 2 |  | 4,656 |  |  | 750 |
Corporate debt | 2 |  | 3,791 |  |  | 3,032 |
Sovereign debt | 2 |  | 1,976 |  |  | 1,954 |
Total available-for-sale debt securities – cash equivalents |  |  | 10,423 |  |  | 5,736 |
Money market funds | 1 |  | 3,167 |  |  | 2,814 |
Total cash and cash equivalents(b) |  |  | $ | 20,844 |  |  | $ | 15,512 |
Marketable debt securities |  |  |  |  |
U.S. government and agencies | 2 |  | $ | 1,230 |  |  | $ | 3,310 |
Corporate debt | 2 |  | 3,478 |  |  | 3,665 |
Mortgage and asset-backed | 2 |  | 695 |  |  | 635 |
Sovereign debt | 2 |  | 563 |  |  | 703 |
Total available-for-sale debt securities – marketable securities |  |  | $ | 5,966 |  |  | $ | 8,313 |
Restricted cash |  |  |  |  |
Cash and cash equivalents |  |  | $ | 260 |  |  | $ | 219 |
Money market funds | 1 |  | 2,392 |  |  | 2,117 |
Total restricted cash |  |  | $ | 2,652 |  |  | $ | 2,336 |
Available-for-sale debt securities included above with contractual maturities(c) |  |  |  |  |  |  |
Due in one year or less |  |  | $ | 11,288 |  |  |
Due between one and five years |  |  | 4,406 |  |  |
Total available-for-sale debt securities with contractual maturities |  |  | $ | 15,694 |  |  |
__________
(a) | Includes $616 million that is designated exclusively to fund capital expenditures in GM Korea at December 31, 2018. Refer to Note 20 for additional information.
(b) | Includes $2.3 billion in GM Cruise at December 31, 2018. Refer to Note 20 for additional information.
(c) | Excludes mortgage and asset-backed securities.
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following table summarizes the fair value of cash equivalents and marketable debt and equity securities which approximates cost:
| Fair Value Level |  | December 31, 2018 |  | December 31, 2017
Cash and cash equivalents |  |  |  |  |
Cash and time deposits(a) |  |  | $ | 7,254 |  |  | $ | 6,962 |
Available-for-sale debt securities |  |  |  |  |
U.S. government and agencies | 2 |  | 4,656 |  |  | 750 |
Corporate debt | 2 |  | 3,791 |  |  | 3,032 |
Sovereign debt | 2 |  | 1,976 |  |  | 1,954 |
Total available-for-sale debt securities – cash equivalents |  |  | 10,423 |  |  | 5,736 |
Money market funds | 1 |  | 3,167 |  |  | 2,814 |
Total cash and cash equivalents(b) |  |  | $ | 20,844 |  |  | $ | 15,512 |
Marketable debt securities |  |  |  |  |
U.S. government and agencies | 2 |  | $ | 1,230 |  |  | $ | 3,310 |
Corporate debt | 2 |  | 3,478 |  |  | 3,665 |
Mortgage and asset-backed | 2 |  | 695 |  |  | 635 |
Sovereign debt | 2 |  | 563 |  |  | 703 |
Total available-for-sale debt securities – marketable securities |  |  | $ | 5,966 |  |  | $ | 8,313 |
Restricted cash |  |  |  |  |
Cash and cash equivalents |  |  | $ | 260 |  |  | $ | 219 |
Money market funds | 1 |  | 2,392 |  |  | 2,117 |
Total restricted cash |  |  | $ | 2,652 |  |  | $ | 2,336 |
Available-for-sale debt securities included above with contractual maturities(c) |  |  |  |  |  |  |
Due in one year or less |  |  | $ | 11,288 |  |  |
Due between one and five years |  |  | 4,406 |  |  |
Total available-for-sale debt securities with contractual maturities |  |  | $ | 15,694 |  |  |
__________
(a) | Includes $616 million that is designated exclusively to fund capital expenditures in GM Korea at December 31, 2018. Refer to Note 20 for additional information.
(b) | Includes $2.3 billion in GM Cruise at December 31, 2018. Refer to Note 20 for additional information.
(c) | Excludes mortgage and asset-backed securities.
Available-for-sale Securities | The following table summarizes the fair value of cash equivalents and marketable debt and equity securities which approximates cost:
| Fair Value Level |  | December 31, 2018 |  | December 31, 2017
Cash and cash equivalents |  |  |  |  |
Cash and time deposits(a) |  |  | $ | 7,254 |  |  | $ | 6,962 |
Available-for-sale debt securities |  |  |  |  |
U.S. government and agencies | 2 |  | 4,656 |  |  | 750 |
Corporate debt | 2 |  | 3,791 |  |  | 3,032 |
Sovereign debt | 2 |  | 1,976 |  |  | 1,954 |
Total available-for-sale debt securities – cash equivalents |  |  | 10,423 |  |  | 5,736 |
Money market funds | 1 |  | 3,167 |  |  | 2,814 |
Total cash and cash equivalents(b) |  |  | $ | 20,844 |  |  | $ | 15,512 |
Marketable debt securities |  |  |  |  |
U.S. government and agencies | 2 |  | $ | 1,230 |  |  | $ | 3,310 |
Corporate debt | 2 |  | 3,478 |  |  | 3,665 |
Mortgage and asset-backed | 2 |  | 695 |  |  | 635 |
Sovereign debt | 2 |  | 563 |  |  | 703 |
Total available-for-sale debt securities – marketable securities |  |  | $ | 5,966 |  |  | $ | 8,313 |
Restricted cash |  |  |  |  |
Cash and cash equivalents |  |  | $ | 260 |  |  | $ | 219 |
Money market funds | 1 |  | 2,392 |  |  | 2,117 |
Total restricted cash |  |  | $ | 2,652 |  |  | $ | 2,336 |
Available-for-sale debt securities included above with contractual maturities(c) |  |  |  |  |  |  |
Due in one year or less |  |  | $ | 11,288 |  |  |
Due between one and five years |  |  | 4,406 |  |  |
Total available-for-sale debt securities with contractual maturities |  |  | $ | 15,694 |  |  |
__________
(a) | Includes $616 million that is designated exclusively to fund capital expenditures in GM Korea at December 31, 2018. Refer to Note 20 for additional information.
(b) | Includes $2.3 billion in GM Cruise at December 31, 2018. Refer to Note 20 for additional information.
(c) | Excludes mortgage and asset-backed securities.
Reconciliation of Cash, Cash Equivalents and Restricted Cash from Balance Sheet to Statement of Cash Flows | The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same amounts shown in the consolidated statements of cash flows:
| December 31, 2018 |  | December 31, 2017
Cash and cash equivalents | $ | 20,844 |  |  | $ | 15,512 |
Restricted cash included in Other current assets | 2,083 |  |  | 1,745 |
Restricted cash included in Other assets | 569 |  |  | 591 |
Total | $ | 23,496 |  |  | $ | 17,848 |

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- Definition Tabular disclosure of the reconciliation of cash, cash equivalents and restricted cash from the consolidated balance sheet to the consolidated statements of cash flows. + References No definition available. + Details
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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References No definition available. + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19190-110258 + Details
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