Debt - Components of Long-Term Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 20,807		$ 17,963
Less: Total unamortized debt discount and debt issuance costs	246		243
Less: Current maturities	2,231		1,677
Long-term debt and capital lease obligations, net of current maturities	18,330		16,043
Secured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	19,057		16,713
Secured Debt [Member] | 2013 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	1,867		1,872
Secured Debt [Member] | 2014 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	743		750
Secured Debt [Member] | Credit Facility, Tranche B-1, Citicorp 2013 [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	980		990
Secured Debt [Member] | Credit Facility, Tranche B-2, Citicorp 2013 [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	588		594
Secured Debt [Member] | Enhanced Equipment Trust Certificates (EETC) [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	8,693		7,028
Secured Debt [Member] | Equipment Loans and Other Notes Payable [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	4,183		2,952
Secured Debt [Member] | Special Facility Revenue Bonds [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	1,080		1,100
Less: Current maturities	365	$ 365
Secured Debt [Member] | AAdvantage Loan [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations			433
Secured Debt [Member] | Other Secured Obligations, Fixed Rate [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	923		994
Unsecured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	1,750		1,250
Unsecured Debt [Member] | Senior Notes, 5.50, Due in 2019 [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	750		750
Unsecured Debt [Member] | Senior Notes, 6.125, Due in 2018 [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	500		500
Unsecured Debt [Member] | Senior Notes, 4.625, Due in 2020 [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	500
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	19,054		16,710
Less: Total unamortized debt discount and debt issuance costs	228		228
Less: Current maturities	2,234		1,678
Long-term debt and capital lease obligations, net of current maturities	16,592		14,804
American Airlines, Inc. [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	19,027		16,683
American Airlines, Inc. [Member] | Secured Debt [Member] | 2013 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	1,867		1,872
American Airlines, Inc. [Member] | Secured Debt [Member] | 2014 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	743		750
American Airlines, Inc. [Member] | Secured Debt [Member] | Credit Facility, Tranche B-1, Citicorp 2013 [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	980		990
American Airlines, Inc. [Member] | Secured Debt [Member] | Credit Facility, Tranche B-2, Citicorp 2013 [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	588		594
American Airlines, Inc. [Member] | Secured Debt [Member] | Enhanced Equipment Trust Certificates (EETC) [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	8,693		7,028
American Airlines, Inc. [Member] | Secured Debt [Member] | Equipment Loans and Other Notes Payable [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	4,183		2,952
American Airlines, Inc. [Member] | Secured Debt [Member] | Special Facility Revenue Bonds [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	1,051		1,071
American Airlines, Inc. [Member] | Secured Debt [Member] | AAdvantage Loan [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations			433
American Airlines, Inc. [Member] | Secured Debt [Member] | Other Secured Obligations, Fixed Rate [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	922		993
American Airlines, Inc. [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	27		27
American Airlines, Inc. [Member] | Unsecured Debt [Member] | Affiliate Unsecured Obligations [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 27		$ 27