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Automotive and GM Financial Debt (Tables) | 12 Months Ended
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Dec. 31, 2018
Interest expense |
| Years Ended December 31,
| 2018 |  | 2017 |  | 2016
Automotive interest expense | $ | 655 |  |  | $ | 575 |  |  | $ | 563 |
Automotive Financing - GM Financial interest expense | 3,225 |  |  | 2,566 |  |  | 1,972 |
Total interest expense | $ | 3,880 |  |  | $ | 3,141 |  |  | $ | 2,535 |
Schedule of maturities of long-term debt | The following table summarizes contractual maturities including capital leases at December 31, 2018:
| Automotive |  | Automotive Financing(a) |  | Total
2019 | $ | 949 |  |  | $ | 31,045 |  |  | $ | 31,994 |
2020 | 589 |  |  | 23,153 |  |  | 23,742 |
2021 | 505 |  |  | 15,038 |  |  | 15,543 |
2022 | 49 |  |  | 7,430 |  |  | 7,479 |
2023 | 1,544 |  |  | 5,083 |  |  | 6,627 |
Thereafter | 10,826 |  |  | 9,937 |  |  | 20,763 |
| $ | 14,462 |  |  | $ | 91,686 |  |  | $ | 106,148 |
________
(a) | Secured debt, credit facilities and other unsecured debt are based on expected payoff date. Senior notes principal amounts are based on maturity.
Automotive [Member] |
Debt carrying amount and fair value |
| December 31, 2018 |  | December 31, 2017
Secured debt | $ | 143 |  |  | $ | 204 |
Unsecured debt | 13,292 |  |  | 12,579 |
Capital leases | 528 |  |  | 719 |
Total automotive debt(a) | $ | 13,963 |  |  | $ | 13,502 |
Fair value utilizing Level 1 inputs | $ | 11,693 |  |  | $ | 13,202 |
Fair value utilizing Level 2 inputs | 1,838 |  |  | 1,886 |
Fair value of automotive debt | $ | 13,531 |  |  | $ | 15,088 |
Available under credit facility agreements | $ | 14,167 |  |  | $ | 14,067 |
Interest rate range on outstanding debt(b) | 0.0-18.5% |  |  | 0.0-21.8% |
Weighted-average interest rate on outstanding short-term debt(b) | 6.6 | % |  | 4.7 | %
Weighted-average interest rate on outstanding long-term debt(b) | 5.2 | % |  | 5.2 | %
__________
(a) | Includes net discount and debt issuance costs of $499 million at December 31, 2018 and 2017.
(b) | Includes coupon rates on debt denominated in various foreign currencies and interest free loans and the impact of reclassification of $1.5 billion of senior unsecured notes from long-term to short-term in the year ended December 31, 2017.
GM Financial [Member] |
Debt carrying amount and fair value |
| December 31, 2018 |  | December 31, 2017
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Secured debt | $ | 42,835 |  |  | $ | 42,835 |  |  | $ | 39,887 |  |  | $ | 39,948 |
Unsecured debt | 48,153 |  |  | 47,556 |  |  | 40,830 |  |  | 41,989 |
Total GM Financial debt | $ | 90,988 |  |  | $ | 90,391 |  |  | $ | 80,717 |  |  | $ | 81,937 |
Fair value utilizing Level 2 inputs |  |  | $ | 88,305 |  |  |  |  | $ | 79,623 |
Fair value utilizing Level 3 inputs |  |  | $ | 2,086 |  |  |  |  | $ | 2,314 |

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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