Fair Value Measurements - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 1 to Level 2 transfers amount	$ 0
American Airlines, Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Level 1 to Level 2 transfers amount	0
Venezuelan [Member] \| Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign earnings repatriated	644,000,000	656,000,000
Decrease due to translation and repatriation of earnings		12,000,000
Venezuelan [Member] \| Cash and Cash Equivalents [Member] \| American Airlines, Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign earnings repatriated	644,000,000	656,000,000
Decrease due to translation and repatriation of earnings		12,000,000
Venezuelan [Member] \| 6.3 Bolivars per Dollar [Member] \| Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign earnings repatriated	621,000,000
Foreign currency translation exchange rate	6.3
Venezuelan [Member] \| 6.3 Bolivars per Dollar [Member] \| Cash and Cash Equivalents [Member] \| American Airlines, Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign earnings repatriated	621,000,000
Foreign currency translation exchange rate	6.3
Venezuelan [Member] \| 12.0 Bolivars per Dollar [Member] \| Cash and Cash Equivalents [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign earnings repatriated	23,000,000
Foreign currency translation exchange rate	12.0
Venezuelan [Member] \| 12.0 Bolivars per Dollar [Member] \| Cash and Cash Equivalents [Member] \| American Airlines, Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign earnings repatriated	$ 23,000,000
Foreign currency translation exchange rate	12.0

Foreign Currency, Decrease Due To Translation And Repatriation Of Earnings

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- Definition

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

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Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 30

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521

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Amount of foreign earnings repatriated from subsidiaries outside the country of domicile.

+ References

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