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Investment in Other Companies (Details) | 12 Months Ended
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Dec. 31, 2014
Trip Linhas Aereas |
Investments in other companies |
Annual rate of return used to calculate the put option price (as a percent) | 20.00%

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- Definition Represents the annual rate of return used to calculate the put option price. + References No definition available. + Details
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Namespace Prefix: | skyw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=skyw_TripLinhasAereasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |