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OPERATING SEGMENT INFORMATION (Tables) | 12 Months Ended
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Dec. 31, 2023
Segment Reporting, Asset Reconciling Item [Line Items] |
Schedule of Segment Reporting Information, by Segment | Operating segment information is as follows (in millions):
| Year Ended December 31, 2023
| Mainline |  | Regional |  | Horizon |  | Consolidating & Other(a) |  | Air Group Adjusted(b) |  | Special Items(c) |  | Consolidated
Operating Revenue |  |  |  |  |  |  |  |  |  |  |  |  |
Passenger revenue | $ | 8,097 |  |  | $ | 1,429 |  |  | $ | — |  |  | $ | — |  |  | $ | 9,526 |  |  | $ | — |  |  | $ | 9,526 |
CPA revenue | — |  |  | — |  |  | 374 |  |  | (374) |  |  | — |  |  | — |  |  | — |
Mileage Plan other revenue | 599 |  |  | 49 |  |  | — |  |  | — |  |  | 648 |  |  | — |  |  | 648 |
Cargo and other revenue | 244 |  |  | — |  |  | — |  |  | 8 |  |  | 252 |  |  | — |  |  | 252 |
Total Operating Revenue | 8,940 |  |  | 1,478 |  |  | 374 |  |  | (366) |  |  | 10,426 |  |  | — |  |  | 10,426 |
Operating Expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Operating expenses, excluding fuel | 5,841 |  |  | 1,121 |  |  | 344 |  |  | (358) |  |  | 6,948 |  |  | 443 |  |  | 7,391 |
Fuel expense | 2,264 |  |  | 379 |  |  | — |  |  | — |  |  | 2,643 |  |  | (2) |  |  | 2,641 |
Total Operating Expenses | 8,105 |  |  | 1,500 |  |  | 344 |  |  | (358) |  |  | 9,591 |  |  | 441 |  |  | 10,032 |
Non-operating Income (Expense) | (15) |  |  | — |  |  | (41) |  |  | 3 |  |  | (53) |  |  | (18) |  |  | (71) |
Income (Loss) Before Income Tax | $ | 820 |  |  | $ | (22) |  |  | $ | (11) |  |  | $ | (5) |  |  | $ | 782 |  |  | $ | (459) |  |  | $ | 323 |
Pretax Margin |  |  |  |  |  |  |  |  | 7.5 | % |  |  |  | 3.1 | %
| Year Ended December 31, 2022
| Mainline |  | Regional |  | Horizon |  | Consolidating & Other(a) |  | Air Group Adjusted(b) |  | Special Items(c) |  | Consolidated
Operating Revenue |  |  |  |  |  |  |  |  |  |  |  |  |
Passenger revenue | $ | 7,454 |  |  | $ | 1,354 |  |  | $ | — |  |  | $ | — |  |  | $ | 8,808 |  |  | $ | — |  |  | $ | 8,808 |
CPA revenue | — |  |  | — |  |  | 359 |  |  | (359) |  |  | — |  |  | — |  |  | — |
Mileage Plan other revenue | 538 |  |  | 52 |  |  | — |  |  | — |  |  | 590 |  |  | — |  |  | 590 |
Cargo and other revenue | 244 |  |  | — |  |  | — |  |  | 4 |  |  | 248 |  |  | — |  |  | 248 |
Total Operating Revenue | 8,236 |  |  | 1,406 |  |  | 359 |  |  | (355) |  |  | 9,646 |  |  | — |  |  | 9,646 |
Operating Expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Operating expenses, excluding fuel | 5,216 |  |  | 1,085 |  |  | 383 |  |  | (356) |  |  | 6,328 |  |  | 580 |  |  | 6,908 |
Fuel expense | 2,195 |  |  | 397 |  |  | — |  |  | — |  |  | 2,592 |  |  | 76 |  |  | 2,668 |
Total Operating Expenses | 7,411 |  |  | 1,482 |  |  | 383 |  |  | (356) |  |  | 8,920 |  |  | 656 |  |  | 9,576 |
Non-operating Income (Expense) | 30 |  |  | — |  |  | (22) |  |  | 1 |  |  | 9 |  |  | — |  |  | 9 |
Income (Loss) Before Income Tax | $ | 855 |  |  | $ | (76) |  |  | $ | (46) |  |  | $ | 2 |  |  | $ | 735 |  |  | $ | (656) |  |  | $ | 79 |
Pretax Margin |  |  |  |  |  |  |  |  | 7.6 | % |  |  |  | 0.8 | %
| Year Ended December 31, 2021
| Mainline |  | Regional |  | Horizon |  | Consolidating & Other(a) |  | Air Group Adjusted(b) |  | Special Items(c) |  | Consolidated
Operating Revenue |  |  |  |  |  |  |  |  |  |  |  |  |
Passenger revenue | $ | 4,411 |  |  | $ | 1,088 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,499 |  |  | $ | — |  |  | $ | 5,499 |
CPA revenue | — |  |  | — |  |  | 406 |  |  | (406) |  |  | — |  |  | — |  |  | — |
Mileage Plan other revenue | 402 |  |  | 59 |  |  | — |  |  | — |  |  | 461 |  |  | — |  |  | 461 |
Cargo and other revenue | 212 |  |  | — |  |  | — |  |  | 4 |  |  | 216 |  |  | — |  |  | 216 |
Total Operating Revenue | 5,025 |  |  | 1,147 |  |  | 406 |  |  | (402) |  |  | 6,176 |  |  | — |  |  | 6,176 |
Operating Expenses |  |  |  |  |  |  |  |  |  |  |  |  |
Operating expenses, excluding fuel | 4,101 |  |  | 1,096 |  |  | 373 |  |  | (433) |  |  | 5,137 |  |  | (925) |  |  | 4,212 |
Fuel expense | 1,065 |  |  | 261 |  |  | — |  |  | — |  |  | 1,326 |  |  | (47) |  |  | 1,279 |
Total Operating Expenses | 5,166 |  |  | 1,357 |  |  | 373 |  |  | (433) |  |  | 6,463 |  |  | (972) |  |  | 5,491 |
Non-operating Income (Expense) | (38) |  |  | — |  |  | (21) |  |  | 3 |  |  | (56) |  |  | — |  |  | (56) |
Income (Loss) Before Income Tax | $ | (179) |  |  | $ | (210) |  |  | $ | 12 |  |  | $ | 34 |  |  | $ | (343) |  |  | $ | 972 |  |  | $ | 629 |
Pretax Margin |  |  |  |  |  |  |  |  | (5.6) | % |  |  |  | 10.2 | %
(a) Includes consolidating entries, Air Group parent company, McGee Air Services, and other immaterial business units. (b) The Air Group Adjusted column represents the financial information that is reviewed by management to assess performance of operations and determine capital allocations and excludes certain charges. (c) Includes special items and mark-to-market fuel-hedge accounting adjustments.
| 2023 |  | 2022 |  | 2021
Depreciation and amortization: |  |  |  |  |
Mainline | $ | 403 |  |  | $ | 351 |  |  | $ | 323 |
Horizon | 48 |  |  | 64 |  |  | 71 |
Consolidated | $ | 451 |  |  | $ | 415 |  |  | $ | 394 |
Capital expenditures: |  |  |  |  |
Mainline | $ | 1,473 |  |  | $ | 1,544 |  |  | $ | 236 |
Horizon(a) | 200 |  |  | 127 |  |  | 56 |
Consolidated | $ | 1,673 |  |  | $ | 1,671 |  |  | $ | 292 |
Total assets at end of period: |  |  |  |  |
Mainline | $ | 19,937 |  |  | $ | 19,733 |  |  |
Horizon | 1,352 |  |  | 1,157 |  |  |
Consolidating & Other | (6,676) |  |  | (6,704) |  |  |
Consolidated | $ | 14,613 |  |  | $ | 14,186 |  |  |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482573/350-20-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-25 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-22 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-30 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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