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COVID-19 PANDEMIC NARRATIVE (Details) $ in Millions | 12 Months Ended | 21 Months Ended
--- | --- | ---
Dec. 31, 2021 USD ($) aircraft shares | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2021 USD ($) aircraft shares
Concentration Risk [Line Items] |  |  |  |
Asset Impairment Charges |  | $ 363 |  |
Leased Aircraft Return Costs | $ 209 |  |  |
Restructuring Charges | (10) | 220 | $ 0 |
Special Items - Impairment charges and other | (1) | 627 | $ 0 |
Line of credit facility, borrowing capacity | 486 |  |  | $ 486
CARES Act Payroll Tax Relief | $ 21 | 29 |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares | 539,508 |  |  | 539,508
PSP Installments Received | $ 1,100 |  |  | $ 1,100
Adjustments to Additional Paid in Capital, Warrant Issued | 16 |  |  |
Restructuring and Related Cost, Expected Cost Remaining | 12 | 127 |  | 12
Payments for Restructuring | (105) |  |  |
Proceeds From Payroll Support Program Grant | 892 | 753 |  | 1,645
Other Asset Impairment Charges |  | 30 |  |
Total Expected Relief from PSP of CARES Act |  |  |  | 2,270
CARES Act PSP Warrants Issued Value |  |  |  | 25
Total Unsecured Term Loan through PSP of CARES Act |  |  |  | 600
Proceeds From Payroll Support Program Grant | $ 892 | 753 |  | 1,645
Total Unsecured Term Loan through PSP of CARES Act |  |  |  | 600
CARES Act PSP Warrants Issued Value |  |  |  | 25
Total Expected Relief from PSP of CARES Act |  |  |  | 2,270
CARES PSP1 |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Proceeds From Payroll Support Program Grant |  |  |  | 757
Total Expected Relief from PSP of CARES Act |  |  |  | 1,059
CARES Act PSP Warrants Issued Value |  |  |  | 9
Total Unsecured Term Loan through PSP of CARES Act |  |  |  | 293
Proceeds From Payroll Support Program Grant |  |  |  | 757
Total Unsecured Term Loan through PSP of CARES Act |  |  |  | 293
CARES Act PSP Warrants Issued Value |  |  |  | 9
Total Expected Relief from PSP of CARES Act |  |  |  | 1,059
CARES PSP2 |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Proceeds From Payroll Support Program Grant |  |  |  | 457
Total Expected Relief from PSP of CARES Act |  |  |  | 626
CARES Act PSP Warrants Issued Value |  |  |  | 9
Total Unsecured Term Loan through PSP of CARES Act |  |  |  | 160
Proceeds From Payroll Support Program Grant |  |  |  | 457
Total Unsecured Term Loan through PSP of CARES Act |  |  |  | 160
CARES Act PSP Warrants Issued Value |  |  |  | 9
Total Expected Relief from PSP of CARES Act |  |  |  | 626
CARES PSP3 |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Proceeds From Payroll Support Program Grant |  |  |  | 431
Total Expected Relief from PSP of CARES Act |  |  |  | 585
CARES Act PSP Warrants Issued Value |  |  |  | 7
Total Unsecured Term Loan through PSP of CARES Act |  |  |  | 147
Proceeds From Payroll Support Program Grant |  |  |  | 431
Total Unsecured Term Loan through PSP of CARES Act |  |  |  | 147
CARES Act PSP Warrants Issued Value |  |  |  | 7
Total Expected Relief from PSP of CARES Act |  |  |  | $ 585
Airbus |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Aircraft Permanently Parked | aircraft | 40 |  |  | 40
US Treasury CARES Act Loan |  |  |  |
Concentration Risk [Line Items] |  |  |  |
Line of credit facility, borrowing capacity | $ 1,900 |  |  | $ 1,900
Proceeds from Lines of Credit | $ 135 |  |  |
Adjustments to Additional Paid in Capital, Warrant Issued |  | $ 6 |  |

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