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Automotive and GM Financial Debt | 3 Months Ended
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Mar. 31, 2018
Debt Disclosure [Abstract] |
Automotive and GM Financial Debt | Automotive and GM Financial Debt
| March 31, 2018 |  | December 31, 2017
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Total automotive debt | $ | 15,298 |  |  | $ | 16,141 |  |  | $ | 13,502 |  |  | $ | 15,088 |
Fair value utilizing Level 1 inputs |  |  | $ | 12,484 |  |  |  |  | $ | 13,202 |
Fair value utilizing Level 2 inputs |  |  | $ | 3,657 |  |  |  |  | $ | 1,886 |
The fair value of automotive debt measured utilizing Level 1 inputs was based on quoted prices in active markets for identical instruments that a market participant can access at the measurement date. The fair value of automotive debt measured utilizing Level 2 inputs was based on a discounted cash flow model using observable inputs. This model utilizes observable inputs such as contractual repayment terms and benchmark yield curves, plus a spread based on our senior unsecured notes that is intended to represent our nonperformance risk. We obtain the benchmark yield curves and yields on unsecured notes from independent sources that are widely used in the financial industry. At March 31, 2018 and December 31, 2017 the fair value of automotive d ebt exceeded its carrying amount due primarily to a decrease in bond yields compared to yields at the time of issuance. In the three months ended March 31, 2018 we borrowed $1.3 billion from SAIC General Motors Corp., Ltd. (SGM) pursuant to a short-term unsecured note payable due in June 2018 to provide additional liquidity to support our operations. Upon repayment, we expect to receive a dividend from SGM. In April 2018 we amended and restated our two existing revolving credit facilities and entered into a third facility, increasing our aggregate borrowing capacity from $14.5 billion to $16.5 billion. These facilities consist of a 364-day, $2.0 billion facility, a three-year, $4.0 billion facility and a five-year, $10.5 billion facility. The facilities are available to us as well as certain wholly owned subsidiaries, including GM Financial. The three-year, $4.0 billion facility allows for borrowings in U.S. Dollars and other currencies and includes a letter of credit sub-facility of $1.1 billion. The five-year, $10.5 billion facility allows for borrowings in U.S. Dollars and other currencies. The 364-day, $2.0 billion facility allows for borrowing in U.S. Dollars only. We have allocated the 364-day, $2.0 billion facility for exclusive use by GM Financial.
| March 31, 2018 |  | December 31, 2017
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Secured debt | $ | 39,441 |  |  | $ | 39,395 |  |  | $ | 39,887 |  |  | $ | 39,948 |
Unsecured debt | 44,079 |  |  | 44,738 |  |  | 40,830 |  |  | 41,989 |
Total GM Financial debt | $ | 83,520 |  |  | $ | 84,133 |  |  | $ | 80,717 |  |  | $ | 81,937 |
Fair value utilizing Level 2 inputs |  |  | $ | 81,931 |  |  |  |  |  | $ | 79,623 |
Fair value utilizing Level 3 inputs |  |  | $ | 2,202 |  |  |  |  |  | $ | 2,314 |
The fair value of GM Financial debt measured utilizing Level 2 inputs was based on quoted market prices for identical instruments and if unavailable, quoted market prices of similar instruments. For debt with original maturity or revolving period of 18 months or less par value is considered to be a reasonable estimate of fair value. The fair value of GM Financial debt measured utilizing Level 3 inputs was based on the discounted future net cash flows expected to be settled using current risk-adjusted rates. Secured debt consists of revolving credit facilities and securitization notes payable. Most of the secured debt was issued by VIEs and is repayable only from proceeds related to the underlying pledged assets. Refer to Note 9 for additional information on GM Financial's involvement with VIEs. In the three months ended March 31, 2018 we issued $4.7 billion in aggregate principal amount of securitization notes payable with an initial weighted average interest rate of 2.59% and maturity dates ranging from 2022 to 2025. Unsecured debt consists of senior notes, credit facilities and other unsecured debt. In the three months ended March 31, 2018 we issued $3.4 billion in aggregate principal amount of senior notes with an initial weighted average interest rate of 2.30% and maturity dates ranging from 2021 to 2028. In April 2018 we issued $2.5 billion in aggregate principal amount of senior notes with an initial weighted average interest rate of 3.80% and maturity dates ranging from 2021 to 2025. Each of the revolving credit facilities and the indentures governing GM Financial's notes contain terms and covenants including limitations on GM Financial's ability to incur certain liens.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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