| Schedule of Long-Term Debt Carrying Amounts |
The carrying amounts of outstanding debt are as follows: | | | | | | | | | | | | | | | | | December 31, | | | 2022 | | 2021 | | | | (In thousands) | | HollyFrontier | | | | | 2.625% Senior Notes | | $ | 59,637 | | | $ | 350,000 | | 5.875% Senior Notes | | 202,900 | | | 1,000,000 | | 4.500% Senior Notes | | 74,966 | | | 400,000 | | | | 337,503 | | | 1,750,000 | | | | | | | | HF Sinclair | | | | | 2.625% Senior Notes | | $ | 248,190 | | | $ | — | | 5.875% Senior Notes | | 797,100 | | | — | | 4.500% Senior Notes | | 325,034 | | | — | | | | 1,370,324 | | | — | | | | | | | Less current debt (1) | | (306,959) | | | — | | | | | | | Unamortized discount and debt issuance costs (1) | | (8,689) | | | (10,312) | | | | | | | | Total HF Sinclair long-term debt | | 1,392,179 | | | 1,739,688 | | | | | | | | HEP Credit Agreement | | 668,000 | | | 840,000 | | | | | | | | HEP | | | | | 5.000% Senior Notes | | 500,000 | | | 500,000 | | 6.375% Senior Notes | | 400,000 | | | — | | | | 900,000 | | | 500,000 | | | | | | | | Unamortized discount and debt issuance costs | | (11,666) | | | (6,951) | | | | | | | | Total HEP long-term debt | | 1,556,334 | | | 1,333,049 | | | | | | | | Total long-term debt | | $ | 2,948,513 | | | $ | 3,072,737 | |
(1)The 2.625% HollyFrontier Senior Notes and HF Sinclair 2.625% Senior Notes, inclusive of unamortized discount and debt issuance costs of $0.9 million, are due October 2023 and are classified as Current debt as of December 31, 2022 on our consolidated balance sheets.
The fair values of the senior notes are as follows: | | | | | | | | | | | | | | | | | December 31, | | | 2022 | | 2021 | | | (In thousands) | | | | | | | HollyFrontier and HF Sinclair Senior Notes | | $ | 1,655,726 | | | $ | 1,912,753 | | | | | | | | HEP Senior Notes | | $ | 852,658 | | | $ | 502,705 | |
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| Schedule of Principal Maturities of Long-Term Debt |
Principal maturities of outstanding debt as of December 31, 2022 are as follows:
| | | | | | | Years Ending December 31, | (In thousands) | | 2023 | $ | 307,827 | | | 2024 | — | | | 2025 | 668,000 | | | 2026 | 1,000,000 | | | 2027 | 400,000 | | | Thereafter | 900,000 | | | Total | $ | 3,275,827 | |
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