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Marketable and Other Securities | 3 Months Ended
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Mar. 31, 2019
Marketable Securities [Abstract] |
Marketable and Other Securities | Marketable and Other Securities The following table summarizes the fair value of cash equivalents and marketable debt securities which approximates cost:
| Fair Value Level |  | March 31, 2019 |  | December 31, 2018
Cash and cash equivalents |  |  |  |  |  |
Cash and time deposits(a) |  |  | $ | 7,469 |  |  | $ | 7,254 |
Available-for-sale debt securities |  |  |  |  |  |
U.S. government and agencies | 2 |  | 3,798 |  |  | 4,656 |
Corporate debt | 2 |  | 2,683 |  |  | 3,791 |
Sovereign debt | 2 |  | 274 |  |  | 1,976 |
Total available-for-sale debt securities – cash equivalents |  |  | 6,755 |  |  | 10,423 |
Money market funds | 1 |  | 2,952 |  |  | 3,167 |
Total cash and cash equivalents(b) |  |  | $ | 17,176 |  |  | $ | 20,844 |
Marketable debt securities |  |  |  |  |  |
U.S. government and agencies | 2 |  | $ | 1,231 |  |  | $ | 1,230 |
Corporate debt | 2 |  | 3,482 |  |  | 3,478 |
Mortgage and asset-backed | 2 |  | 747 |  |  | 695 |
Sovereign debt | 2 |  | 561 |  |  | 563 |
Total available-for-sale debt securities – marketable securities |  |  | $ | 6,021 |  |  | $ | 5,966 |
Restricted cash |  |  |  |  |
Cash and cash equivalents |  |  | $ | 237 |  |  | $ | 260 |
Money market funds | 1 |  | 3,368 |  |  | 2,392 |
Total restricted cash |  |  | $ | 3,605 |  |  | $ | 2,652 |
Available-for-sale debt securities included above with contractual maturities(c) |  |  |  |
Due in one year or less |  |  | $ | 7,671 |  |  |
Due between one and five years |  |  | 4,358 |  |  |
Total available-for-sale debt securities with contractual maturities |  |  | $ | 12,029 |  |  |
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(a) | Includes $504 million and $616 million that is designated exclusively to fund capital expenditures in GM Korea Company (GM Korea) at March 31, 2019 and December 31, 2018.
(b) | Includes $2.1 billion and $2.3 billion in GM Cruise at March 31, 2019 and December 31, 2018.
(c) | Excludes mortgage and asset-backed securities.
Proceeds from the sale of investments classified as available-for-sale and sold prior to maturity were $611 million and $920 million in the three months ended March 31, 2019 and 2018. Net unrealized gains and losses on available-for-sale debt securities were insignificant in the three months ended March 31, 2019 and 2018. Cumulative unrealized gains and losses on available-for-sale debt securities were insignificant at March 31, 2019 and December 31, 2018. Our investment in Lyft, Inc. (Lyft) is estimated at fair value using Level 3 inputs because the investment is subject to transfer restrictions. The fair value of our investment in Lyft at March 31, 2019 uses Lyft’s quoted market price, less a discount for the lack of marketability due to the restriction from selling our shares until September 26, 2019. The estimated volatility of Lyft’s common stock represents the significant unobservable input to the put option pricing model used to derive the fair value of our investment. The fair value of this investment was $1.2 billion and $884 million in Other assets at March 31, 2019 and December 31, 2018. We recorded an unrealized gain of $285 million in Interest income and other non-operating income, net in the three months ended March 31, 2019. Refer to Item 3. Quantitative and Qualitative Disclosures About Market Risk for exposure to equity price market risk. The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the condensed consolidated balance sheet to the total shown in the condensed consolidated statement of cash flows:
| March 31, 2019
Cash and cash equivalents | $ | 17,176 |
Restricted cash included in Other current assets | 3,063 |
Restricted cash included in Other assets | 542 |
Total | $ | 20,781 |

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- Definition The entire disclosure of cash, cash equivalents, and debt and equity securities, including any unrealized or realized gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 305 -URI http://asc.fasb.org/topic&trid=2122426 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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