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v3.19.2

Significant Accounting Policies - Summary of Estimated Useful Lives of Aamortizable Intangible Assets (Detail) | 12 Months Ended
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Mar. 31, 2019
Customer related intangibles [member] | Bottom of range [member] |
Disclosure of detailed information about intangible assets [line items] |
Estimated useful lives of the amortizable intangible assets | 5 years
Customer related intangibles [member] | Top of range [member] |
Disclosure of detailed information about intangible assets [line items] |
Estimated useful lives of the amortizable intangible assets | 15 years
Marketing related intangibles [member] | Bottom of range [member] |
Disclosure of detailed information about intangible assets [line items] |
Estimated useful lives of the amortizable intangible assets | 3 years
Marketing related intangibles [member] | Top of range [member] |
Disclosure of detailed information about intangible assets [line items] |
Estimated useful lives of the amortizable intangible assets | 5 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
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- Definition Useful lives or amortisation period, intangible assets other than goodwill. + References No definition available. + Details
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Namespace Prefix: | wit_
Data Type: | xbrli:durationItemType
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
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Data Type: | na
Balance Type: |
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