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GENERAL AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2023
Accounting Policies [Abstract] |  |  |
Organization and Basis of Presentation |  | Organization and Basis of Presentation The unaudited Condensed Consolidated Financial Statements include the accounts of Air Group, or the Company, and its primary subsidiaries, Alaska and Horizon. The unaudited Condensed Consolidated Financial Statements also include McGee Air Services (McGee), a ground services subsidiary of Alaska, and other immaterial business units. All intercompany balances and transactions have been eliminated. These financial statements have been prepared in accordance with accounting principles generally accepted in the United States (GAAP) for interim financial information. Consistent with these requirements, this Quarterly Report on Form 10-Q does not include all the information required by GAAP for complete financial statements. It should be read in conjunction with the consolidated financial statements and accompanying notes in the Annual Report on Form 10-K for the year ended December 31, 2023. In the opinion of management, all adjustments have been made that are necessary to fairly present the Company’s financial position as of June 30, 2024 and the results of operations for the three and six months ended June 30, 2024 and 2023. Such adjustments were of a normal recurring nature. Certain rows, columns, figures, or percentages may not recalculate due to rounding. In preparing these statements, the Company is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities, as well as the reported amounts of revenue and expenses, including impairment charges. Due to seasonal variations in the demand for air travel, the volatility of aircraft fuel prices, changes in global economic conditions, changes in the competitive environment, and other factors, operating results for the three and six months ended June 30, 2024 are not necessarily indicative of operating results for the entire year. Flight 1282 and Boeing 737-9 MAX Grounding As a result of the Flight 1282 accident and the subsequent grounding of Boeing 737-9 MAX (B737-9) aircraft, Air Group's operation and results in the first and second quarters were significantly impacted. The Company received compensation from Boeing to address the financial damages incurred as a result of the grounding. In the first quarter, Boeing paid Air Group $162 million in cash. In the second quarter, Boeing issued Air Group $61 million in supplier credit memos to be applied against future Boeing goods and services purchases. Compensation received under the agreement is accounted for as a reduction in cost basis of certain B737-9 aircraft. The compensation is reflected within Aircraft and other flight equipment and Deposits for future flight equipment in the unaudited Condensed Consolidated Balance Sheets. |
Supplier compensation [Line Items] |  |  |
Supplier Proceeds |  | $ 162 | $ 0
Supplier credit memos [Member] |  |  |
Supplier compensation [Line Items] |  |  |
Supplier credit memos | $ 61 |  |

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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References No definition available. + Details
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