Basis of Presentation and Summary of Significant Accounting Policies - Summary of Depreciable Asset (Detail)	12 Months Ended
	Dec. 31, 2016
Minimum [Member] | Aircraft, Engines and Related Rotable Parts [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	20 years
Minimum [Member] | Aircraft, Engines and Related Rotable Parts [Member] | American Airlines, Inc. [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	20 years
Minimum [Member] | Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years
Minimum [Member] | Buildings and Improvements [Member] | American Airlines, Inc. [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years
Minimum [Member] | Furniture, Fixtures and Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	3 years
Minimum [Member] | Furniture, Fixtures and Other Equipment [Member] | American Airlines, Inc. [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	3 years
Minimum [Member] | Capitalized Software [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years
Minimum [Member] | Capitalized Software [Member] | American Airlines, Inc. [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years
Maximum [Member] | Aircraft, Engines and Related Rotable Parts [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	30 years
Maximum [Member] | Aircraft, Engines and Related Rotable Parts [Member] | American Airlines, Inc. [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	30 years
Maximum [Member] | Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	30 years
Maximum [Member] | Buildings and Improvements [Member] | American Airlines, Inc. [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	30 years
Maximum [Member] | Furniture, Fixtures and Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	10 years
Maximum [Member] | Furniture, Fixtures and Other Equipment [Member] | American Airlines, Inc. [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	10 years
Maximum [Member] | Capitalized Software [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	10 years
Maximum [Member] | Capitalized Software [Member] | American Airlines, Inc. [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	10 years