Basis of Presentation and Summary of Significant Accounting Policies (Property, Plant and Equipment) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Interest capitalized	$ 47	$ 50	$ 40
Jet Aircraft and Engines [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	30 years
Residual value percentage of equipment and properties	10.00%
Jet Aircraft and Engines [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	16 years
Residual value percentage of equipment and properties	5.00%
Major Rotable Parts, Avionics and Assemblies [Member]
Property, Plant and Equipment [Line Items]
Depreciable life descriptions	Fleet end date
Major Rotable Parts, Avionics and Assemblies [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Residual value percentage of equipment and properties	10.00%
Major Rotable Parts, Avionics and Assemblies [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Residual value percentage of equipment and properties	5.00%
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Depreciable life descriptions	Shorter of asset/leasehold improvement or lease end date
Aircraft [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Lease terms for equipment and property under capital leases	30 years
Aircraft [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Lease terms for equipment and property under capital leases	16 years
Other Leased Equipment And Property [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Lease terms for equipment and property under capital leases	30 years
Other Leased Equipment And Property [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Lease terms for equipment and property under capital leases	3 years
Other Regional Aircraft And Engines [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	25 years
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Depreciable life descriptions	Lesser of 5 - 30 years or lease term
Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	20 years
Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years
Furniture, Fixtures and Other Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	10 years
Furniture, Fixtures and Other Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	3 years
Capitalized Software [Member]
Property, Plant and Equipment [Line Items]
Depreciable life descriptions	Lesser of 5 years or lease term
Capitalized Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years
AA [Member]
Property, Plant and Equipment [Line Items]
Interest capitalized	$ 47	$ 50	$ 40
AA [Member] | Jet Aircraft and Engines [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	30 years
Residual value percentage of equipment and properties	10.00%
AA [Member] | Jet Aircraft and Engines [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	16 years
Residual value percentage of equipment and properties	5.00%
AA [Member] | Aircraft [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Lease terms for equipment and property under capital leases	30 years
AA [Member] | Aircraft [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Lease terms for equipment and property under capital leases	16 years
AA [Member] | Other Leased Equipment And Property [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Lease terms for equipment and property under capital leases	30 years
AA [Member] | Other Leased Equipment And Property [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Lease terms for equipment and property under capital leases	3 years
AA [Member] | Other Regional Aircraft And Engines [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	25 years
AA [Member] | Building and Building Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	30 years
AA [Member] | Building and Building Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years
AA [Member] | Furniture, Fixtures and Other Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	10 years
AA [Member] | Furniture, Fixtures and Other Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	3 years
AA [Member] | Capitalized Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years