Basis of Presentation and Summary of Significant Accounting Policies (Intangible Assets) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 20,000,000	$ 25,000,000	$ 27,000,000
Gate Lease Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets useful life	25 years
Intangible assets residual value	0
Airport Operating Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets useful life	25 years
Intangible assets residual value	0
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	9 years
Marketing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	30 years
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	15 months
AA [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense	18,000,000	25,000,000	27,000,000
AA [Member] | Airport Operating Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets useful life	25 years
Intangible assets residual value	$ 0
AA [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	9 years
AA [Member] | Marketing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	30 years
AA [Member] | Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period	15 months