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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- Definition

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

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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.

+ References

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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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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, 2020	Jul. 02, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long term debt	$ 27,301		$ 14,733
Less: unamortized debt discount, premiums and debt issuance costs	(554)		(181)
Less: current portion of long-term debt	(1,911)		(1,407)
Long-term debt, net	24,836		13,145
Secured \| Revolving Credit Facility
Debt Instrument [Line Items]
Long term debt	$ 1,000		0
Fixed interest rate	1.49%
Secured \| Revolving Credit Facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.49%
Secured \| Revolving Credit Facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
Secured \| Aircraft notes
Debt Instrument [Line Items]
Long term debt	$ 14,538		11,585
Secured \| Aircraft notes \| Minimum
Debt Instrument [Line Items]
Fixed interest rate	0.73%
Secured \| Aircraft notes \| Maximum
Debt Instrument [Line Items]
Fixed interest rate	9.80%
Secured \| Aircraft notes \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.49%
Secured \| Aircraft notes \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
Secured \| MileagePlus Senior Secured Notes
Debt Instrument [Line Items]
Long term debt	$ 3,800		0
Fixed interest rate	6.50%	6.50%
Secured \| MileagePlus Term Loan Facility
Debt Instrument [Line Items]
Long term debt	$ 3,000		0
Fixed interest rate	5.49%
Secured \| MileagePlus Term Loan Facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.49%
Secured \| MileagePlus Term Loan Facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
Secured \| CARES Act Term Loan Facility
Debt Instrument [Line Items]
Long term debt	$ 520		0
Fixed interest rate	3.24%
Secured \| CARES Act Term Loan Facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.49%
Secured \| CARES Act Term Loan Facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
Secured \| Term loan
Debt Instrument [Line Items]
Long term debt	$ 1,444		1,459
Fixed interest rate	2.49%
Secured \| Term loan \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.49%
Secured \| Term loan \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	5.25%
Unsecured \| Notes
Debt Instrument [Line Items]
Long term debt	$ 1,050		1,350
Unsecured \| Notes \| Minimum
Debt Instrument [Line Items]
Fixed interest rate	4.25%
Unsecured \| Notes \| Maximum
Debt Instrument [Line Items]
Fixed interest rate	5.00%
Unsecured \| PSP Note
Debt Instrument [Line Items]
Long term debt	$ 1,501		0
Fixed interest rate	1.00%
Unsecured \| Other unsecured debt
Debt Instrument [Line Items]
Long term debt	$ 448		$ 339
Unsecured \| Other unsecured debt \| Minimum
Debt Instrument [Line Items]
Fixed interest rate	4.00%
Unsecured \| Other unsecured debt \| Maximum
Debt Instrument [Line Items]
Fixed interest rate	5.75%