v3.5.0.2

Asset Disposals - Additional Information (Detail) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2016 USD ($) Aircraft | Sep. 30, 2015 USD ($) Aircraft | Jun. 30, 2016 USD ($) Aircraft
Assets Held For Sale And Impairments [Line Items] |  |  |
Cash realized from sale of assets | $ | $ 2.2 | $ 2.3 | $ 11.0
Gain (loss) on disposal of assets | $ | $ (0.1) | $ 0.2 | $ 3.9
Oil and Gas [Member] | Light Aircraft [Member] |  |  |
Assets Held For Sale And Impairments [Line Items] |  |  |
Number of aircraft sold | Aircraft | 4 | 6 | 5
Oil and Gas [Member] | Medium Aircraft [Member] |  |  |
Assets Held For Sale And Impairments [Line Items] |  |  |
Number of aircraft sold | Aircraft |  |  | 3

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- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2443-110228 + Details
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- Definition The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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