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Legal Matters (Details) (SkyWest Airlines and ExpressJet v. Delta, USD $) In Millions, unless otherwise specified | 1 Months Ended |
--- | --- | ---
Dec. 31, 2007 | Sep. 30, 2013
SkyWest Airlines and ExpressJet v. Delta |  |
Legal Matters |  |
Amount of receivables withheld from weekly scheduled wire payments to SkyWest Airlines and Atlantic Southeast | $ 25 |
Withheld receivables recognized as revenue by the entity |  | 31.7
Minimum amount of possible damages |  | 0
Reasonably possible loss related to dispute, maximum |  | $ 25.8

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