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Summary of Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Lives (Detail)	12 Months Ended
	Mar. 31, 2020
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	5 years
Minimum | Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	3 years
Minimum | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	4 years
Minimum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	1 year
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	50 years
Maximum | Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	40 years
Maximum | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	40 years
Maximum | Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	40 years

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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

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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