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Related-Party Transactions (Details) (Zions Bancorporation, USD $) In Millions, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2014 aircraft | Dec. 31, 2013
Related Party Transactions |  |  |
Cash balance with related party |  | 90.6 skyw_RelatedPartyTransactionCashBalancesWithRelatedParty | $ 81.8 skyw_RelatedPartyTransactionCashBalancesWithRelatedParty
Minimum |  |  |
Related Party Transactions |  |  |
Refinancing term | 3 years |  |
Maximum |  |  |
Related Party Transactions |  |  |
Refinancing term | 4 years |  |
CRJ 200 |  |  |
Related Party Transactions |  |  |
Equity participation in leveraged leases on number of aircraft |  | 2 skyw_RelatedPartyTransactionEquityParticipationInLeveragedLeasesOnNumberOfAircraft / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = skyw_ZionsBancorporationMember |
Number of refinanced aircraft | 6 skyw_RelatedPartyTransactionNumberOfRefinancedAircraft / us-gaap_AircraftTypeAxis = skyw_CRJ200Member / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = skyw_ZionsBancorporationMember |  |
CRJ 700 |  |  |
Related Party Transactions |  |  |
Equity participation in leveraged leases on number of aircraft |  | 2 skyw_RelatedPartyTransactionEquityParticipationInLeveragedLeasesOnNumberOfAircraft / us-gaap_AircraftTypeAxis = skyw_CRJ700Member / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = skyw_ZionsBancorporationMember |
Number of refinanced aircraft | 2 skyw_RelatedPartyTransactionNumberOfRefinancedAircraft / us-gaap_AircraftTypeAxis = skyw_CRJ700Member / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = skyw_ZionsBancorporationMember |  |
Brasilia turboprop aircraft |  |  |
Related Party Transactions |  |  |
Equity participation in leveraged leases on number of aircraft |  | 4 skyw_RelatedPartyTransactionEquityParticipationInLeveragedLeasesOnNumberOfAircraft / us-gaap_AircraftTypeAxis = skyw_BrasiliaTurbopropAircraftMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = skyw_ZionsBancorporationMember |

X
- Definition Represents the cash balance held with the related party as of the balance sheet date. + References No definition available. + Details
Name: | skyw_RelatedPartyTransactionCashBalancesWithRelatedParty
Namespace Prefix: | skyw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the number of aircraft under leveraged leases in which the related party is an equity participant. + References No definition available. + Details
Name: | skyw_RelatedPartyTransactionEquityParticipationInLeveragedLeasesOnNumberOfAircraft
Namespace Prefix: | skyw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of refinanced aircraft of the entity. + References No definition available. + Details
Name: | skyw_RelatedPartyTransactionNumberOfRefinancedAircraft
Namespace Prefix: | skyw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the refinancing term. + References No definition available. + Details
Name: | skyw_RelatedPartyTransactionRefinancingTerm
Namespace Prefix: | skyw_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration