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v3.20.2

FINANCING ACTIVITIES (Details) $ / shares in Units, shares in Millions |  | 3 Months Ended | 6 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 01, 2020 USD ($) $ / shares shares | Jun. 30, 2020 USD ($) aircraft $ / shares | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) aircraft $ / shares | Jun. 30, 2019 USD ($) | Jun. 08, 2020 USD ($) | May 04, 2020 USD ($) | Apr. 24, 2020 USD ($) | Apr. 09, 2020 $ / shares | Apr. 01, 2020 USD ($) | Mar. 30, 2020 USD ($) | Dec. 31, 2019 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Required Minimum Liquidity Level at All Times After March 31, 2021 |  | $ 2,500,000,000 |  | $ 2,500,000,000 |  |  |  |  |  |  |  |
Remainder of 2020 |  | 596,000,000 |  | 596,000,000 |  |  |  |  |  |  |  |
2021 |  | 195,000,000 |  | 195,000,000 |  |  |  |  |  |  |  |
2022 |  | 499,000,000 |  | 499,000,000 |  |  |  |  |  |  |  |
2023 |  | 1,400,000,000 |  | 1,400,000,000 |  |  |  |  |  |  |  |
2024 |  | 127,000,000 |  | 127,000,000 |  |  |  |  |  |  |  |
2025 |  | 3,700,000,000 |  | 3,700,000,000 |  |  |  |  |  |  |  |
Beyond 2025 |  | 3,700,000,000 |  | 3,700,000,000 |  |  |  |  |  |  |  |
Proceeds from Payroll Support Program Grant Remaining to be Allocated to Payroll Support, Voluntary Separation, net |  | 957,000,000 |  | 957,000,000 |  |  |  |  |  |  |  | $ 0
Shares Issued, Price Per Share | $ / shares | $ 28.50 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | shares | 80.5 |  |  |  |  |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares | $ 1.00 |  |  |  |  |  |  |  |  |  |  |
Gain on sale-leaseback transactions |  | (222,000,000) | $ 0 | (222,000,000) | $ 0 |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt |  | (392,000,000) |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of long-term debt |  | 3,997,000,000 | 0 | 4,497,000,000 | 0 |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares |  |  |  |  |  |  |  |  | $ 36.47 |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 1,800,000,000 | $ 2,000,000,000.0 |  |  |  |  |
Issuance of common stock | $ 2,200,000,000 | 2,294,000,000 | 0 | 2,294,000,000 | 0 |  |  |  |  |  |  |
Sale Leaseback Cash Proceeds Investing |  | 815,000,000 | $ 0 | 815,000,000 | $ 0 |  |  |  |  |  |  |
Underwriters' Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | shares | 10.5 |  |  |  |  |  |  |  |  |  |  |
2Q20 Saleleaseback of 10 737-800 and 10 737 MAX 8 aircraft [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Sale Leaseback Operating Lease Obligations - 2021 |  | 71,000,000 |  | 71,000,000 |  |  |  |  |  |  |  |
Sale Leaseback Operating Lease Obligations - 2022 |  | 71,000,000 |  | 71,000,000 |  |  |  |  |  |  |  |
Sale Leaseback Operating Lease Obligations - 2023 |  | 71,000,000 |  | 71,000,000 |  |  |  |  |  |  |  |
Sale Leaseback Operating Lease Obligations - 2024 |  | 71,000,000 |  | 71,000,000 |  |  |  |  |  |  |  |
Sale Leaseback Operating Lease Obligations - 2025 |  | 71,000,000 |  | 71,000,000 |  |  |  |  |  |  |  |
Operating Leases, Future Minimum Payments, Remainder of Fiscal Year |  | 35,000,000 |  | 35,000,000 |  |  |  |  |  |  |  |
Operating Leases, Future Minimum Payments, Due Thereafter |  | $ 440,000,000 |  | $ 440,000,000 |  |  |  |  |  |  |  |
B-737-800 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Sale Leaseback Transaction, Description of Asset(s) |  | ten |  |  |  |  |  |  |  |  |  |
Gain on sale-leaseback transactions |  | $ 153,000,000 |  |  |  |  |  |  |  |  |  |
Sale Leaseback Transaction, Lease Terms |  | ten years |  |  |  |  |  |  |  |  |  |
Sale Leaseback Cash Proceeds Investing |  | $ 405,000,000 |  |  |  |  |  |  |  |  |  |
B-737-7 MAX |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Sale Leaseback Transaction, Description of Asset(s) |  | ten |  |  |  |  |  |  |  |  |  |
Gain on sale-leaseback transactions |  | $ 69,000,000 |  |  |  |  |  |  |  |  |  |
Sale Leaseback Transaction, Lease Terms |  | 13 years |  |  |  |  |  |  |  |  |  |
Sale Leaseback Cash Proceeds Investing |  | $ 410,000,000 |  |  |  |  |  |  |  |  |  |
2.625% Notes due 2030 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  | 2.625% |  | 2.625% |  |  |  |  |  |  |  |
Unsecured Debt |  | $ 500,000,000 |  | $ 500,000,000 |  |  |  |  |  |  |  |
Amended 364-Day Term Loan Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | $ 2,300,000,000 |  |
1.250 Convertible Senior Notes due 2025 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate | 1.25% |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Price | $ / shares |  | $ 38.48 |  | $ 38.48 |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Ratio |  | 25.9909 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Redemption Price, Percentage |  | 100.00% |  |  |  |  |  |  |  |  |  |
Convertible Debt Conversion Terms Percentage of Sales Price Exceeding Conversion Price |  | 130.00% |  |  |  |  |  |  |  |  |  |
Convertible Debt Conversion Terms Measurement Period Trading Price Threshold Percentage |  | 98.00% |  |  |  |  |  |  |  |  |  |
4.750 Unsecured Notes due 2023 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  | 4.75% | 4.75% |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 500,000,000 | $ 750,000,000 |  |  |  |  |
5.250 Unsecured Notes due 2025 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  | 5.25% |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  | $ 1,250,000,000 |  |  |  |  |
5.125 Unsecured Notes due 2027 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  | 5.125% |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 1,300,000,000 |  |  |  |  |  |
4.750 Unsecured Notes due 2023 and 5.125 Unsecured Notes due 2027 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of long-term debt |  | $ 1,700,000,000 |  |  |  |  |  |  |  |  |  |
Secured Debt by Six Aircraft [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Aircraft Subject to Secure Debt Transactions | aircraft |  | 6 |  | 6 |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 192,000,000 |  | $ 192,000,000 |  |  |  |  |  |  |  |
364-Day Term Loan Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | 1,000,000,000.0 |  | $ 1,000,000,000.0 |  |  |  |  |  |  |  |
Convertible Debt [Member] | 1.250 Convertible Senior Notes due 2025 |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate | 1.25% |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Underwriters Option to Purchase | $ 300,000,000 |  |  |  |  |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt |  | $ (11,000,000) |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  | 5.20% |  | 5.20% |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 2,300,000,000 | $ 1,900,000,000 |  | $ 1,900,000,000 |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Carrying Amount of Equity Component |  | (403,000,000) |  | (403,000,000) |  |  |  |  |  |  |  |
Unamortized Debt Issuance Expense |  | 62,000,000 |  | 62,000,000 |  |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 1,500,000,000 |  | $ 1,500,000,000 |  |  |  |  |  |  |  |
Amended 364-Day Term Loan Credit Facility | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  | 1.00% |  | 1.00% |  |  |  |  |  |  |  |
Amended 364-Day Term Loan Credit Facility | London Interbank Offered Rate (LIBOR) [Member] | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  | 1.00% |  | 1.00% |  |  |  |  |  |  |  |
Amended 364-Day Term Loan Credit Facility | New York Fed Bank Rate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  | 0.50% |  | 0.50% |  |  |  |  |  |  |  |
Amended 364-Day Term Loan Credit Facility | Base Rate [Member] | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  | 1.00% |  | 1.00% |  |  |  |  |  |  |  |
Accordian Feature to Amended 364-Day Term Loan Credit Facility [Member] | Amended 364-Day Term Loan Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Accordian Feature on Short-term Debt |  |  |  |  |  |  |  |  |  |  | $ 417,000,000 |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 350,000,000 |  |  |  |
Secured Debt by Six Aircraft [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  | 1.40% |  | 1.40% |  |  |  |  |  |  |  |
Existing Revolving Credit Facility [Member] | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Current Borrowing Capacity |  | $ 1,000,000,000.0 |  | $ 1,000,000,000.0 |  |  |  |  |  |  |  |
Revolving Credit Facility, Fair Value Amount Outstanding |  | 0 |  | 0 |  |  |  |  |  |  |  |
Existing Revolving Credit Facility [Member] | 364-Day Term Loan Credit Facility |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 1,000,000,000.0 |  | $ 1,000,000,000.0 |  |  |  |  |  |  |  |

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