Common Stock, Capital Shares Reserved For Future Issuance, Annual Increase Percent

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Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Rights, Number Of Performance Targets

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Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Award Types

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Share-based Compensation Arrangement By Share-based Payment Award, Stock Plan Offering Period

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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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Net number of non-option equity instruments granted to participants.

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Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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Number of grantees affected by modification of award under share-based payment arrangement.

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Percentage of vesting of award under share-based payment arrangement.

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Purchase price of common stock expressed as a percentage of its fair value.

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Value of stock issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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Share-based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Jul. 31, 2019 shares	Mar. 31, 2020 USD ($) award_type participant performance_target $ / shares shares	Mar. 31, 2019 USD ($) $ / shares	Mar. 31, 2018 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of award types \| award_type		2
Effect of reorganization \| $		$ 278,248
Weighted average grant date fair value of units granted (in dollars per share) \| $ / shares		$ 7.71	$ 3.62	$ 0.82
Total fair value of units vested \| $		$ 278,200	$ 92,000	$ 22,600
Share-based compensation expense \| $		$ 222,478	$ 71,151	$ 22,294
Management Incentive Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units authorized for issuance (in units)		24,100,000
Number of awards granted (in shares)		469,000
Appreciation Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units authorized for issuance (in units)		800,000
Number of awards granted (in shares)		53,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of performance targets \| performance_target		4
Vesting percentage		25.00%
Time-Vested Units \| Share-based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Award vesting period		1 year
Requisite service period		48 months
Time-Vested Units \| Share-based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		75.00%
Award vesting period		36 months
Requisite service period		3 years
Management Incentive Units and Appreciation Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of participants impacted by the plan modification \| participant		306
Incremental stock compensation expense recognized from the plan modification \| $		$ 145,300
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation cost not yet recognized \| $		$ 38,800
Weighted average period of recognition		3 years 4 months 24 days
Share-based compensation expense \| $		$ 7,200
Unvested restricted stock and RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense \| $		$ 27,900
Number of awards granted (in shares)		6,569,783
Restricted Stock And Restricted Stock Units, Performance-Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of performance targets		4
Vesting percentage		25.00%
Number of awards granted (in shares)		696,873
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period of recognition		1 year 10 months 24 days
Number of awards granted (in shares)		2,855,000
Total unrecognized compensation cost \| $		$ 22,900
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period of recognition		3 years
Number of awards granted (in shares)		3,715,000
Total unrecognized compensation cost \| $		$ 44,400
Shares committed under ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP offering period		6 months
2019 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)	52,000,000
Annual increase in shares reserved for future issuance based off of shares outstanding	4.00%
2019 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost \| $		$ 400
Award Period One \| Restricted Stock And Restricted Stock Units, Time-Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards granted (in shares)		3,379,170
Award Period One \| Restricted Stock And Restricted Stock Units, Time-Based \| Share-based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Award vesting period		1 year
Award Period One \| Restricted Stock And Restricted Stock Units, Time-Based \| Share-based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		75.00%
Award vesting period		36 months
Award Period Two \| Restricted Stock And Restricted Stock Units, Time-Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards granted (in shares)		2,443,740
Award Period Two \| Restricted Stock And Restricted Stock Units, Time-Based \| Share-based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		25.00%
Award vesting period		1 year
Award Period Two \| Restricted Stock And Restricted Stock Units, Time-Based \| Share-based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		75.00%
Award vesting period		3 years
Award Period Three \| Restricted Stock And Restricted Stock Units, Time-Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards granted (in shares)		50,000
Common Class A \| Shares committed under ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
ESPP, maximum percentage of the common stock available for purchase		85.00%
Common Class A \| 2019 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance (in shares)	6,250,000