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FLEET TRANSITION (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2022
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | $ 146,000,000 |  | $ 221,000,000
Impairment Charges |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | 0 |  | 70,000,000
Accelerated aircraft ownership expenses [Member] |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | 43,000,000 |  | 43,000,000
Lease return costs and other expenses |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | 103,000,000 |  | 108,000,000
Impairment Charges |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges |  | $ 70,000,000 |
Airbus Aircraft [Member] |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | 143,000,000 |  | 148,000,000
Airbus Aircraft [Member] | Impairment Charges |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | 0 |  | 0
Airbus Aircraft [Member] | Accelerated aircraft ownership expenses [Member] |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | 40,000,000 |  | 40,000,000
Airbus Aircraft [Member] | Lease return costs and other expenses |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | 103,000,000 |  | 108,000,000
Q400 Aircraft |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | 3,000,000 |  | 73,000,000
Q400 Aircraft | Impairment Charges |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | 0 |  | 70,000,000
Q400 Aircraft | Accelerated aircraft ownership expenses [Member] |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | 3,000,000 |  | 3,000,000
Q400 Aircraft | Lease return costs and other expenses |  |  |
Impaired Long-Lived Assets [Line Items] |  |  |
Asset Impairment Charges | $ 0 |  | $ 0

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2420-110228 + Details
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