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Estimated Future Project Construction Costs

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Lessee Leasing Arrangements, Operating Leases, Number of Renewal Options

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Number of Aircraft without Secured Financing Commitments Scheduled for Delivery

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- Definition

Number of Spare Aircraft Engines Ordered

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Number of Aircraft Held

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- Definition

Number of Aircraft with Secured Debt Financing Commitments Scheduled for Delivery

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Number of Delivered Aircraft with Secured Debt Financing Commitments

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Number of Direct Leased Aircraft Ordered From A Third Party

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Number of Seats, Aircraft

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Area of land held.

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Area of a real estate property.

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- Definition

Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Stated as a percentage, the estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose) divided by its [historical] capitalized cost.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Commitments and Contingencies - Commitments (Details) ft² in Thousands, $ in Millions	1 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) ft² a aircraft_engine aircraft extension_option	Jul. 31, 2015 USD ($) aircraft seat	Sep. 30, 2015 USD ($) ft² a aircraft_engine aircraft
Aircraft [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Operating leases, lessee, number of leased assets \| aircraft	61		61
Spare Engines [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Operating leases, lessee, number of leased assets \| aircraft_engine	11		11
Hangar Facility [Member] \| Operating Lease [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Area of land, hangar site \| a	10		10
Area of hangar facility \| ft²	126		126
Operating lease, initial term	30 years
Operating lease, number of extension options \| extension_option	2
Operating lease, extension term	10 years
Estimated future project costs	$ 32.0		$ 32.0
Aircraft [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of delivered aircraft with secured debt financing commitments \| aircraft			11
Property and equipment, useful life			25 years
Property and equipment, salvage value percentage	10.00%		10.00%
Airbus A320 [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft held \| aircraft	76		76
2015-2016 [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft with secured debt financing commitments scheduled for delivery \| aircraft	15		15
Airbus [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Costs to reconfigure aircraft seating		$ 0.6
Airbus [Member] \| A320 [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft with secured debt financing commitments scheduled for delivery \| aircraft	3		3
Number of aircraft reconfigured for increased seating capacity \| aircraft		40
Airbus [Member] \| A320 [Member] \| Minimum [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft seats \| seat		178
Airbus [Member] \| A320 [Member] \| Maximum [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft seats \| seat		182
Airbus [Member] \| 2015-2016 [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft with secured debt financing commitments scheduled for delivery \| aircraft	15		15
Airbus [Member] \| 2015-2021 [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of Aircraft without Secured Financing Commitments Scheduled for Delivery (in aircraft) \| aircraft	75		75
Third Party Lessor [Member] \| 2015-2016 [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of Direct Leased Aircraft Ordered From A Third Party \| aircraft	5		5
Aircraft and Related Flight Equipment [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	$ 149.0		$ 149.0
Unrecorded Unconditional Purchase Obligation, Due in 2016	592.0		592.0
Unrecorded Unconditional Purchase Obligation, Due in 2017	767.0		767.0
Unrecorded Unconditional Purchase Obligation, Due in 2018	620.0		620.0
Unrecorded Unconditional Purchase Obligation, Due in 2019	703.0		703.0
Unrecorded Unconditional Purchase Obligation, Due in 2020 and beyond	1,515.0		1,515.0
Aircraft with Increased Seating Capacity [Member] \| Airbus [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Unrecorded Unconditional Purchase Obligation, Due in Remainder of Fiscal Year	13.0		13.0
Unrecorded Unconditional Purchase Obligation, Due in 2016	$ 11.0		$ 11.0
V2500 SelectOne Engine [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of spare aircraft engines ordered (in aircraft engine) \| aircraft_engine	4		4
PurePower PW1100G-JM Engine [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of spare aircraft engines ordered (in aircraft engine) \| aircraft_engine	9		9
Enhanced Equipment Trust Certificate [Member] \| Aircraft and Related Flight Equipment [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]
Debt financing commitments	$ 576.6		$ 576.6