XML 45 R27.htm IDEA: XBRL DOCUMENT
v3.24.0.1

INCOME TAXES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
Income Tax Disclosure [Abstract] |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] | Deferred tax (assets) and liabilities comprise the following (in millions):
| 2023 |  | 2022
Excess of tax over book depreciation | $ | 1,605 |  |  | $ | 1,312 |
Intangibles - net | 16 |  |  | 17 |
Operating lease assets | 292 |  |  | 356 |
Other - net | 3 |  |  | 49 |
Deferred tax liabilities | 1,916 |  |  | 1,734 |
Mileage Plan | (455) |  |  | (436) |
Inventory obsolescence | (23) |  |  | (21) |
Employee benefits | (159) |  |  | (145) |
Net operating losses | (166) |  |  | (28) |
Operating lease liabilities | (329) |  |  | (392) |
Leasehold maintenance | (28) |  |  | (67) |
Other - net | (77) |  |  | (88) |
Deferred tax assets | (1,237) |  |  | (1,177) |
Valuation allowance | 16 |  |  | 17 |
Net deferred tax liabilities | $ | 695 |  |  | $ | 574 |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] | The components of income tax expense are as follows (in millions):
| 2023 |  | 2022 |  | 2021
Current income tax (benefit) expense: |  |  |  |  |
Federal | $ | (3) |  |  | $ | (11) |  |  | $ | 40 |
State | (4) |  |  | (3) |  |  | 16 |
Total current income tax (benefit) expense | (7) |  |  | (14) |  |  | 56 |
Deferred income tax expense: |  |  |  |  |
Federal | 82 |  |  | 32 |  |  | 80 |
State | 13 |  |  | 3 |  |  | 15 |
Total deferred income tax expense | 95 |  |  | 35 |  |  | 95 |
Income tax expense | $ | 88 |  |  | $ | 21 |  |  | $ | 151 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
| 2023 |  | 2022 |  | 2021
Income before income tax | $ | 323 |  |  | $ | 79 |  |  | $ | 629 |
Expected tax expense | 68 |  |  | 17 |  |  | 132 |
Nondeductible expenses | 14 |  |  | 11 |  |  | 10 |
State income tax expense | 17 |  |  | 5 |  |  | 20 |
Tax law changes | — |  |  | — |  |  | (14) |
State income sourcing | (5) |  |  | (2) |  |  | — |
Valuation allowance | (1) |  |  | (4) |  |  | 1 |
Tax credits | (3) |  |  | (5) |  |  | (2) |
Uncertain tax positions | (5) |  |  | (1) |  |  | 3 |
Other - net | 3 |  |  | — |  |  | 1 |
Actual tax expense | $ | 88 |  |  | $ | 21 |  |  | $ | 151 |
Effective tax rate(a) | 27.1 | % |  | 26.2 | % |  | 24.0 | %
Summary of Income Tax Contingencies [Table Text Block] | The Company has identified its federal tax return and its state tax returns in Alaska, Oregon and California as “major” tax jurisdictions. A summary of the Company's jurisdictions and the periods that are subject to examination are as follows:
Jurisdiction | Period
Federal | 2020 to 2022
Alaska | 2018 to 2022
California | 2007 to 2022
Oregon | 2015 to 2022
Certain tax years are open to the extent of net operating loss carryforwards. Changes in the liability for gross unrecognized tax benefits during 2023, 2022 and 2021 are as follows (in millions):
| 2023 |  | 2022 |  | 2021
Balance at January 1 | $ | 21 |  |  | $ | 41 |  |  | $ | 35 |
Additions related to prior years | — |  |  | — |  |  | 3 |
Releases related to prior years | — |  |  | (1) |  |  | — |
Additions related to current year activity | 9 |  |  | 1 |  |  | 3 |
Releases due to settlements | (3) |  |  | (20) |  |  | — |
Releases due to lapse of statute of limitations | (2) |  |  | — |  |  | — |
Balance at December 31 | $ | 25 |  |  | $ | 21 |  |  | $ | 41 |

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 9 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 + Details
Name: | us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
Name: | us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 12 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 + Details
Name: | us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 19 -SubTopic 10 -Topic 740 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-19 + Details
Name: | us-gaap_SummaryOfIncomeTaxContingenciesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration