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Commitments and Contingencies - Additional Information (Detail) - INR (₨) ₨ in Millions	Mar. 31, 2018	Mar. 31, 2017
Loss Contingencies [Line Items]
Capital commitments, estimated amounts of contracts remaining to be executed on the capital account	₨ 5,196.7	₨ 4,010.7
Indirect Taxes And Other Claims
Loss Contingencies [Line Items]
Contingencies, estimated possible loss	₨ 8,398.3	₨ 7,759.1

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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.

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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- Definition

The floor amount as of the balance sheet date that the entity must expend to satisfy the terms of disclosed arrangements (excluding long-term commitments) in which the entity must commit resources to supply goods or services to one or more customers.

+ References

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