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LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Debt Instrument [Line Items] |  |  |  |  |
Debt Issuance Costs, Net |  |  | $ (17) |  | $ (20)
Total |  |  | 2,303 |  | 2,539
Less current portion |  |  | 342 |  | 366
Long-term debt, less current portion |  |  | $ 1,961 |  | $ 2,173
Weighted-average fixed-interest rate |  |  | 3.60% |  | 3.70%
Weighted-average variable-interest rate |  |  | 2.80% |  | 1.30%
Long-term debt payments |  |  | $ (239) | $ (681) |
Proceeds from issuance of debt |  |  | $ 0 | $ 363 |
Adjustments to Additional Paid in Capital, Warrant Issued | $ 8 | $ 8 |  |  |
Debt, Weighted Average Interest Rate |  |  | 3.40% |  |
LONG-TERM DEBT |  |  | LONG-TERM DEBT Long-term debt obligations on the condensed consolidated balance sheet (in millions):
| June 30, 2022 |  | December 31, 2021
Fixed-rate notes payable due through 2029 | $ | 129 |  |  | $ | 163 |
Fixed-rate PSP notes payable due through 2031 | 600 |  |  | 600 |
Fixed-rate EETC payable due through 2025 & 2027 | 1,002 |  |  | 1,058 |
Variable-rate notes payable due through 2029 | 589 |  |  | 738 |
Less debt issuance costs | (17) |  |  | (20) |
Total debt | 2,303 |  |  | 2,539 |
Less current portion | 342 |  |  | 366 |
Long-term debt, less current portion | $ | 1,961 |  |  | $ | 2,173 |
Weighted-average fixed-interest rate | 3.6 | % |  | 3.7 | %
Weighted-average variable-interest rate | 2.8 | % |  | 1.3 | %
Approximately $372 million of the Company's total variable-rate notes payable are effectively fixed via interest rate swaps at June 30, 2022, resulting in an effective weighted-average interest rate for the full debt portfolio of 3.4%. During the six months ended June 30, 2022, the Company made scheduled debt payments of $222 million and prepayments of $17 million for loans related to Q400 aircraft. Debt Maturity At June 30, 2022, long-term debt principal payments for the next five years and thereafter are as follows (in millions):
| Total
Remainder of 2022 | $ | 146 |
2023 | 329 |
2024 | 235 |
2025 | 256 |
2026 | 176 |
Thereafter | 1,178 |
Total | $ | 2,320 |
Bank Lines of Credit Alaska has three credit facilities totaling $486 million as of June 30, 2022. One of the credit facilities for $150 million expires in March 2025 and is secured by certain accounts receivable, spare engines, spare parts and ground service equipment. A second credit facility for $250 million expires in June 2024 and is secured by aircraft. Both facilities have variable interest rates based on LIBOR plus a specified margin. A third credit facility for $86 million expires in June 2023 and is secured by aircraft. Alaska has secured letters of credit against the third facility, but has no plans to borrow using either of the other two facilities. All credit facilities have a requirement to maintain a minimum unrestricted cash and marketable securities balance of $500 million. Alaska was in compliance with this covenant at June 30, 2022. |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 486 |  |
Debt Prepayments [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt payments |  |  | (17) |  |
Scheduled Debt Payments [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt payments |  |  | (222) |  |
Fixed rate notes payable due through 2029 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total |  |  | 129 |  | $ 163
Variable rate notes payable due through 2029 [Member] [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total |  |  | 589 |  | 738
US Treasury CARES Act Loan [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Adjustments to Additional Paid in Capital, Warrant Issued |  |  |  |  | 30
July 2020 EETC |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total |  |  | 1,002 |  | 1,058
Credit Facility 1 [Member] | Secured by certain accounts receivable, spare engines, spare parts and ground service equipment [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | 150 |  |
PSP Notes Payable through 2031 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total |  |  | 600 |  | $ 600
Variable Rate debt with interest rate swap [Member] | Interest rate swaps agreements [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Derivative, Notional Amount |  |  | 372 |  |
Derivative, Notional Amount |  |  | $ 372 |  |

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