Share-Based Compensation Arrangement By Share-Based Payment Award, Performance Period

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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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- Definition

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

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- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

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- Definition

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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- Definition

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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- 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.

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No definition available.

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- Definition

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

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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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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- Definition

Description of terms of award under share-based payment arrangement.

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- Definition

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

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Share-based Compensation - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended	5 Months Ended	12 Months Ended
	May 31, 2018	Jun. 30, 2020	Mar. 31, 2017	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of incentive plan	P10Y
Incremental stock compensation expense as a result of modification of equity awards				$ 0
Cash received from stock awards exercised during the period			$ 3,000,000		$ 1,000,000
Total grant date fair value of restricted stock unit awards vested				8,000,000	3,000,000
Intrinsic value of options exercised				1,000,000	1,000,000	$ 3,000,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total grant date fair value of restricted stock unit awards vested				8,000,000	$ 1,000,000	$ 3,000,000
Unrecognized compensation expense				$ 22,000,000
Recognition period for compensation expense				1 year 8 months 12 days
Performance-based Restricted Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense				$ 13,000,000
Recognition period for compensation expense				1 year 7 months 6 days
Performance period				3 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				1 year
Minimum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				1 year
Minimum \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				1 year
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				3 years
Maximum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				3 years
Maximum \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				3 years
2018 Employee Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate amount of common stock granted (in shares)	9,500,000			6,126,834
2018 Director Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate amount of common stock granted (in shares)				203,400
Maximum aggregate amount of shares to be issued (in shares)	310,000
Principal Equity Plan \| Minimum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				3 years
Principal Equity Plan \| Maximum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)				4 years
Forecast \| Performance-based Restricted Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage		187.00%