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Other Liabilities and Provisions - Additional Information (Detail) | 12 Months Ended
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Mar. 31, 2018
Bottom of range [member] |
Disclosure of other provisions [line items] |
Provision for warranty utilization period | 1 year
Top of range [member] |
Disclosure of other provisions [line items] |
Provision for warranty utilization period | 2 years

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Provision for warranty utilization period. + References No definition available. + Details
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Namespace Prefix: | wit_
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Balance Type: | na
Period Type: | duration

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

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