Number of aircraft leased under operating leases with original or remaining terms in excess of one year.

No definition available.

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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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.

+ Details

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

+ Details

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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- Details

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COMMITMENTS AND CONTINGENCIES - Operating Leases (Details) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2017 USD ($) aircraft	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) aircraft	Sep. 30, 2016 USD ($)
Operating Leased Assets [Line Items]
Operating leases rental expense \| $	$ 57.2	$ 51.9	$ 115.9	$ 103.2
Term of leasing contract			180 months
Operating lease term renewal options			240 months
Number of leased aircraft	91		91
Aircraft
Operating Leased Assets [Line Items]
Operating leases rental expense \| $	$ 49.7	$ 46.1	$ 101.4	$ 90.8
VIH Aviation Group \| Leasing From Related Party [Member]
Operating Leased Assets [Line Items]
Related party transaction, expenses from transactions with related party \| $	$ 5.2		$ 9.7
VIH Aviation Group \| Leasing From Related Party [Member] \| S-92
Operating Leased Assets [Line Items]
Number of leased aircraft	6		6
VIH Aviation Group \| Leasing From Related Party [Member] \| AW139
Operating Leased Assets [Line Items]
Number of leased aircraft	1		1
VIH Helicopters USA, Inc \| Leasing From Related Party [Member]
Operating Leased Assets [Line Items]
Related party transaction, expenses from transactions with related party \| $			$ 0.1
Six months ending March 31, 2018 to fiscal year 2019
Operating Leased Assets [Line Items]
Number of leased aircraft	26		26
Fiscal year 2020 to fiscal year 2022
Operating Leased Assets [Line Items]
Number of leased aircraft	48		48
Fiscal year 2023 to fiscal year 2024
Operating Leased Assets [Line Items]
Number of leased aircraft	17		17