Debt Instrument, Business Day Notice Period for Prepayment

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- Definition

Debt Instrument, Covenant, Repayment Period Upon Change in Control

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- Definition

Debt Instrument, Default Interest Rate

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- Definition

Related Party, Ownership Interest Held By Related Party

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- Definition

Related Party, Ownership Interest Held By Related Party, Shares

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- Definition

Related Party Transaction, Agreement Extension Term

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- Definition

Related Party Transaction, Agreement Term

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- Definition

Related Party Transaction, Number of Independent Directors Required for Audit Committee

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- Definition

Related Party Transaction, Ownership Threshold for Appointment of Directors

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- Definition

Related Party Transaction, Ownership Threshold for Right of Ownership Percentage Maintenance

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- Definition

Related Party Transaction, Ownership Threshold for Voting Rights

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- Definition

Related Party Transaction, Termination Notice Period

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No definition available.

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- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Amount of interest expense incurred on a debt or other obligation to related party.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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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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Related Party Transactions (Narrative) (Details)			3 Months Ended
Related Party Transactions (Narrative) (Details)	Aug. 01, 2020	Dec. 27, 2019 USD ($) day director	Jun. 30, 2021 USD ($) shares	Jun. 30, 2020 USD ($)	Mar. 31, 2021 USD ($)
Related Party Transaction [Line Items]
Amounts due to related parties			$ 39,000		$ 543,000
Sumitomo Dainippon Pharma Co., Ltd. \| Majority Shareholder
Related Party Transaction [Line Items]
Number of shares owned (in shares) \| shares			48,641,181
Ownership percentage			52.90%
Ownership threshold for appointment of directors		50.00%
Number of independent directors required for audit committee \| director		3
Ownership threshold for voting rights		60.00%
Ownership threshold for right of ownership percentage maintenance		50.00%
Amounts due to related parties					100,000
Sumitomo Dainippon Pharma Co., Ltd. \| Majority Shareholder \| Maximum
Related Party Transaction [Line Items]
Amounts due to related parties			$ 100,000
Sumitomo Dainippon Pharma Co., Ltd. \| Majority Shareholder \| Sumitovant Other Expenses Agreement \| SG&A expense
Related Party Transaction [Line Items]
Expenses incurred under agreements				$ 100,000
Sumitomo Dainippon Pharma Co., Ltd. \| Majority Shareholder \| Sumitovant Other Expenses Agreement \| SG&A expense \| Maximum
Related Party Transaction [Line Items]
Expenses incurred under agreements			100,000
Sumitomo Dainippon Pharma Co., Ltd. \| Majority Shareholder \| Sumitovant Other Expenses Agreement \| R&D expense \| Maximum
Related Party Transaction [Line Items]
Expenses incurred under agreements			100,000
Sumitomo Dainippon Pharma Co., Ltd. \| Majority Shareholder \| Sunovion Pharmaceuticals Inc. Market Access Services Agreement
Related Party Transaction [Line Items]
Expenses incurred under agreements			1,300,000	0
Amounts due to related parties			400,000		$ 400,000
Agreement term	3 years
Agreement extension term	1 year
Termination notice period	9 months
Term Loan \| Letter Agreement with Sumitomo Dainippon Pharma, Co., Ltd. \| Sumitomo Dainippon Pharma Co., Ltd. \| Majority Shareholder
Related Party Transaction [Line Items]
Maximum borrowing commitment		$ 400,000,000.0
Facility term		5 years
Notice period for prepayment \| day		10
Default interest rate		5.00%
Repayment period upon change in control		30 days
Available borrowing capacity			41,300,000
Outstanding balance			358,700,000
Interest expense			$ 2,900,000	$ 2,200,000
LIBOR \| Term Loan \| Letter Agreement with Sumitomo Dainippon Pharma, Co., Ltd. \| Sumitomo Dainippon Pharma Co., Ltd. \| Majority Shareholder
Related Party Transaction [Line Items]
Variable interest rate		3.00%