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Represents information pertaining to future royalties relating to acquisition.

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Amount of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment and available for long-term lease, acquired at the acquisition date.

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Number of aircrafts which entered into a multi-year component support and repair contract.

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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.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment, acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Acquisition (Details) $ in Millions	Apr. 10, 2017 USD ($) aircraft	Dec. 04, 2015 USD ($)	May 31, 2017 USD ($)	May 31, 2016 USD ($)	May 31, 2015 USD ($)
Fair value of net assets acquired
Goodwill			$ 115.4	$ 117.3	$ 123.5
ACLAS
Acquisitions
Number of aircrafts under multi-year component support and repair contract \| aircraft	100
Deferred consideration payable period	3 years
Fair value of net assets acquired
Inventory	$ 5.0
Equipment on or available for long-term lease	7.0
Intangible assets	3.0
Net assets acquired	$ 15.0
Vantem Modular LLC
Fair value of net assets acquired
Current assets		$ 1.5
Equipment		0.5
Intangible assets		3.5
Contingent consideration		(2.0)
Net assets acquired		3.5
Goodwill		1.3
Purchase price		4.8
Vantem Modular LLC \| Maximum
Acquisitions
Future royalties		$ 5.0