v3.4.0.3

Commitments and Contingencies - Additional Information (Detail) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2016 USD ($) Land_Parcel | Dec. 31, 2015 Aircraft | Dec. 31, 2014 Aircraft
Long-term Purchase Commitment [Line Items] |  |  |
Number of aircrafts delivered | Aircraft |  | 1 |
Total aircraft deposits | $ 2.6 |  |
Aggregate estimated probable liability environmental matters | $ 0.2 |  |
Number of parcels of land exists | Land_Parcel | 2 |  |
Aggregate commitments under operating leases | $ 281.4 |  |
Operational lease payable | 38.6 |  |
Lease commitment for aircraft | 266.5 |  |
Facility lease commitments | 14.9 |  |
2016 [Member] |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Aggregate purchase price for aircraft | 67.8 |  |
2017 [Member] |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Aggregate purchase price for aircraft | 55.7 |  |
2018 [Member] |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Aggregate purchase price for aircraft | 127.0 |  |
2019 [Member] |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Aggregate purchase price for aircraft | 150.4 |  |
2020 [Member] |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Aggregate purchase price for aircraft | $ 22.7 |  |
Heavy Aircraft [Member] |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Option to purchase additional number of aircrafts | Aircraft |  |  | 6
Number of aircraft orders cancelled previously scheduled for delivery | Aircraft |  | 4 |

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- Definition Facility lease commitments. + References No definition available. + Details
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- Definition Total costs accrued as of the balance sheet date for environmental loss contingencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6395460&loc=d3e13647-108346 + Details
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