Face/par value in contract for future debt financing commitments

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- Definition

Estimated Future Project Construction Costs

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- Definition

Number of Aircraft without Secured Financing Commitments Scheduled for Delivery

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No definition available.

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- Definition

Number of Spare Aircraft Engines Ordered

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No definition available.

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- Definition

Number of Aircraft, Increased Seating Capacity

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- Definition

Number of Aircraft with Secured Debt Financing Commitments Scheduled for Delivery

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- Definition

Number of Direct Leased Aircraft Ordered From A Third Party

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- Definition

Number of Seats, Aircraft

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- Definition

Reconfiguration Costs per Aircraft, Seating

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- Definition

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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- Definition

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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No definition available.

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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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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the next 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

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- Definition

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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- Definition

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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- Definition

Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the third 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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- Definition

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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- 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.

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Commitments and Contingencies - Aircraft-Related Commitments and Financing Arrangements (Details) ft² in Thousands, $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2015 aircraft seat	Dec. 31, 2015 USD ($) ft² aircraft_engine aircraft	Aug. 31, 2015 USD ($) aircraft
Hangar Facility \| Operating Lease
Unrecorded Unconditional Purchase Obligation [Line Items]
Real estate property (in square feet) \| ft²		126
Operating leases, term		30 years
Aircraft operating leases, renewal term		10 years
Estimated future project construction costs		$ 32.0
Airbus
Unrecorded Unconditional Purchase Obligation [Line Items]
Cost of reconfiguration of aircraft seating		$ 0.6
Airbus \| A320
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft with secured debt financing commitments scheduled for delivery \| aircraft			3
Number of aircrafts with increased seating capacity \| aircraft	40
Airbus \| A320 \| Minimum
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of seats \| seat	178
Airbus \| A320 \| Maximum
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of seats \| seat	182
2016
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft with secured debt financing commitments scheduled for delivery \| aircraft		12
2016 \| Third-Party Lessor
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of direct leased aircraft ordered from a third party \| aircraft		5
2017-2021 \| Airbus
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of aircraft without secured financing commitments scheduled for delivery \| aircraft		75
Aircraft and Related Flight Equipment
Unrecorded Unconditional Purchase Obligation [Line Items]
Committed expenditures, 2016		$ 592.9
Committed expenditures, 2017		767.4
Committed expenditures, 2018		620.5
Committed expenditures, 2019		703.3
Committed expenditures, 2020		705.5
Committed expenditures, 2021 and beyond		812.1
Aircraft and Related Flight Equipment \| Enhanced Equipment Trust Certificate
Unrecorded Unconditional Purchase Obligation [Line Items]
Face amount, commitment for future issuance		455.8	$ 576.6
Aircraft with Increased Seating Capacity \| Airbus
Unrecorded Unconditional Purchase Obligation [Line Items]
Committed expenditures, 2016		15.0
Committed expenditures, 2017		1.7
Reservation System and Advertising Media
Unrecorded Unconditional Purchase Obligation [Line Items]
Committed expenditures, 2016		5.1
Committed expenditures, 2017		3.9
Committed expenditures, 2018		$ 2.6
V2500 SelectOne Engine
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of spare aircraft engines ordered \| aircraft_engine		4
PurePower PW1100G-JM Engine
Unrecorded Unconditional Purchase Obligation [Line Items]
Number of spare aircraft engines ordered \| aircraft_engine		9