Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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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.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt - Summary of Long-Term Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Jan. 14, 2022	Dec. 31, 2020
Debt Instrument [Line Items]
Long term debt	$ 33,876		$ 27,301
Less: unamortized debt discount, premiums and debt issuance costs	(513)		(554)
Less: current portion of long-term debt	(3,002)		(1,911)
Long-term debt, net	30,361		24,836
Secured Debt \| Revolving Credit Facility
Debt Instrument [Line Items]
Long term debt	$ 0		1,000
Secured Debt \| Revolving Credit Facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.49%
Secured Debt \| Revolving Credit Facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
Secured Debt \| Aircraft notes
Debt Instrument [Line Items]
Long term debt	$ 13,293		14,538
Secured Debt \| Aircraft notes \| Minimum
Debt Instrument [Line Items]
Fixed interest rate	0.62%
Secured Debt \| Aircraft notes \| Maximum
Debt Instrument [Line Items]
Fixed interest rate	6.90%
Secured Debt \| Aircraft notes \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.49%
Secured Debt \| Aircraft notes \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
Secured Debt \| MileagePlus Senior Secured Notes
Debt Instrument [Line Items]
Long term debt	$ 3,800		3,800
Fixed interest rate	6.50%
Secured Debt \| MileagePlus Term Loan Facility
Debt Instrument [Line Items]
Long term debt	$ 3,000		3,000
Fixed interest rate	6.25%
Secured Debt \| MileagePlus Term Loan Facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.49%
Secured Debt \| MileagePlus Term Loan Facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
Secured Debt \| 2026 and 2029 Notes
Debt Instrument [Line Items]
Long term debt	$ 4,000		0
Secured Debt \| 2026 and 2029 Notes \| Minimum
Debt Instrument [Line Items]
Fixed interest rate	4.38%
Secured Debt \| 2026 and 2029 Notes \| Maximum
Debt Instrument [Line Items]
Fixed interest rate	4.63%
Secured Debt \| 2021 Term Loans
Debt Instrument [Line Items]
Long term debt	$ 4,963		0
Fixed interest rate	4.50%
Secured Debt \| CARES Act Term Loan Facility
Debt Instrument [Line Items]
Long term debt	$ 0		520
Secured Debt \| CARES Act Term Loan Facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.49%
Secured Debt \| CARES Act Term Loan Facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
Secured Debt \| Term loan
Debt Instrument [Line Items]
Long term debt	$ 0		1,444
Secured Debt \| Term loan \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.49%
Secured Debt \| Term loan \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
Unsecured \| Notes (b)
Debt Instrument [Line Items]
Long term debt	$ 1,041		1,050
Unsecured \| Notes (b) \| Minimum
Debt Instrument [Line Items]
Fixed interest rate	4.25%
Unsecured \| Notes (b) \| Maximum
Debt Instrument [Line Items]
Fixed interest rate	5.00%
Unsecured \| PSP Notes
Debt Instrument [Line Items]
Long term debt	$ 3,181		1,501
Fixed interest rate	1.00%
Unsecured \| Other unsecured debt
Debt Instrument [Line Items]
Long term debt	$ 598		$ 448
Unsecured \| Other unsecured debt \| Minimum
Debt Instrument [Line Items]
Fixed interest rate	0.00%
Unsecured \| Other unsecured debt \| Maximum
Debt Instrument [Line Items]
Fixed interest rate	5.75%
Unsecured \| 2022 Notes \| Subsequent Event
Debt Instrument [Line Items]
Long term debt		$ 400
Fixed interest rate		4.25%