The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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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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Equity - Equity-Based Incentive Compensation - Service Awards Vesting Schedule (Details) - Service awards - shares	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Equity-Based Incentive Compensation
Units vested and issued (in units)	2,260,011	2,350,082	844,626
Unvested restricted units at the beginning of the period (in units)	2,708,500	2,297,132	2,260,400
2019
Equity-Based Incentive Compensation
Units vested and issued (in units)	935,975
2020
Equity-Based Incentive Compensation
Units vested and issued (in units)	969,475
2021
Equity-Based Incentive Compensation
Units vested and issued (in units)	373,425