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Property, Plant, and Equipment - Summary of Property, Plant, and Equipment (Detail) - USD ($) $ in Thousands | Mar. 31, 2021 | Mar. 31, 2020
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Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, including finance lease right-of-use asset, gross | $ 1,195,805 | $ 1,108,147
Less accumulated depreciation | (698,749) | (628,133)
Property, plant, and equipment, net | 497,056 | 480,014
Land, buildings, and improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, including finance lease right-of-use asset, gross | 313,031 | 291,271
Machinery and equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, including finance lease right-of-use asset, gross | 822,725 | 722,955
Construction in progress |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, including finance lease right-of-use asset, gross | $ 60,049 | $ 93,921

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- Definition Property, Plant, And Equipment And Finance Lease Right-Of-Use Asset, Accumulated Depreciation And Amortization + References No definition available. + Details
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Namespace Prefix: | ens_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Property, Plant, And Equipment And Finance Lease Right-Of-Use Asset, After Accumulated Depreciation And Amortization + References No definition available. + Details
Name: | ens_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
Namespace Prefix: | ens_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Property, Plant, And Equipment And Finance Lease Right-Of-Use Asset, Before Accumulated Depreciation And Amortization + References No definition available. + Details
Name: | ens_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization
Namespace Prefix: | ens_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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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
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ConstructionInProgressMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |