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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

+ References

+ Details

Name:	us-gaap_LongTermDebtPercentageBearingVariableInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Debt - Components of Long-Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2020	May 31, 2020	Apr. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total long-term debt	$ 31,398			$ 23,856
Less: Total unamortized debt discount, premium and issuance costs	734			211
Less: Current maturities	2,471			2,749
Long-term debt, net of current maturities	28,193			20,896
Secured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt	27,608			22,606
Secured Debt [Member] \| 2013 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,788			1,807
Variable interest rate	1.93%
Secured Debt [Member] \| 2013 Credit Facilities [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 750			0
Variable interest rate	2.17%
Secured Debt [Member] \| 2014 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,220			1,202
Variable interest rate	1.93%
Secured Debt [Member] \| 2014 Credit Facilities [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,643			0
Variable interest rate	2.17%
Secured Debt [Member] \| April 2016 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 960			970
Variable interest rate	2.18%
Secured Debt [Member] \| April 2016 Credit Facilities [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 450			0
Variable interest rate	2.17%
Secured Debt [Member] \| December 2016 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,213			1,213
Variable interest rate	2.18%
Secured Debt [Member] \| 11.75% Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 2,500			0
Interest rate	11.75%
Secured Debt [Member] \| Enhanced Equipment Trust Certificates (EETC) [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 11,410			11,933
Average interest rate	4.03%
Secured Debt [Member] \| Enhanced Equipment Trust Certificates (EETC) [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate	3.00%
Secured Debt [Member] \| Enhanced Equipment Trust Certificates (EETC) [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate	8.39%
Secured Debt [Member] \| Equipment Loans and Other Notes Payable [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 4,610			4,727
Average interest rate	3.02%
Secured Debt [Member] \| Equipment Loans and Other Notes Payable [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate	1.87%
Secured Debt [Member] \| Equipment Loans and Other Notes Payable [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate	7.31%
Secured Debt [Member] \| Special Facility Revenue Bonds [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,064			754
Secured Debt [Member] \| Special Facility Revenue Bonds [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate	5.00%
Secured Debt [Member] \| Special Facility Revenue Bonds [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate	8.00%
Unsecured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 3,790			1,250
Unsecured Debt [Member] \| Payroll Support Program Promissory Note [Member]
Debt Instrument [Line Items]
Total long-term debt	1,540			0
Unsecured Debt [Member] \| 6.50% Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,000			0
Interest rate	6.50%
Unsecured Debt [Member] \| 5.000% Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 750			750
Interest rate	5.00%
Unsecured Debt [Member] \| 3.75% Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 500			0
Interest rate	3.75%
Unsecured Debt [Member] \| 4.625% Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 0			500
Interest rate	4.625%
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Less: Total unamortized debt discount, premium and issuance costs	$ 277			205
Less: Current maturities	2,474			2,246
Long-term debt, net of current maturities	24,833			20,126
American Airlines, Inc. [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt	27,584			22,577
American Airlines, Inc. [Member] \| Secured Debt [Member] \| 2013 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,788			1,807
Variable interest rate	1.93%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| 2013 Credit Facilities [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 750			0
Variable interest rate	2.17%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| 2014 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,220			1,202
Variable interest rate	1.93%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| 2014 Credit Facilities [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,643			0
Variable interest rate	2.17%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| April 2016 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 960			970
Variable interest rate	2.18%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| April 2016 Credit Facilities [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 450			0
Variable interest rate	2.17%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| December 2016 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,213			1,213
Variable interest rate	2.18%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| 11.75% Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 2,500			0
Variable interest rate	11.75%
Interest rate	11.75%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| Enhanced Equipment Trust Certificates (EETC) [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 11,410			11,933
Average interest rate	4.03%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| Enhanced Equipment Trust Certificates (EETC) [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate	3.00%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| Enhanced Equipment Trust Certificates (EETC) [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate	8.39%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| Equipment Loans and Other Notes Payable [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 4,610			4,727
Average interest rate	2.20%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| Equipment Loans and Other Notes Payable [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate	1.38%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| Equipment Loans and Other Notes Payable [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate	5.83%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| Special Facility Revenue Bonds [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 1,040			$ 725
American Airlines, Inc. [Member] \| Secured Debt [Member] \| Special Facility Revenue Bonds [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate	5.00%
American Airlines, Inc. [Member] \| Secured Debt [Member] \| Special Facility Revenue Bonds [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate	5.38%
American Airlines, Inc. [Member] \| Unsecured Debt [Member] \| 6.50% Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate	6.50%
LIBOR [Member] \| American Airlines, Inc. [Member] \| Secured Debt [Member] \| 2013 Credit Facilities [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate			2.00%
LIBOR [Member] \| American Airlines, Inc. [Member] \| Secured Debt [Member] \| 2014 Credit Facilities [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		2.00%
LIBOR [Member] \| American Airlines, Inc. [Member] \| Secured Debt [Member] \| April 2016 Credit Facilities [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate			2.00%