Construction contracts in progress (Details) - Construction in progress [member] - INR (₨) ₨ in Thousands	12 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Construction Contracts In Progress [Line Items]
Contract revenue recognized for the year	₨ 0	₨ 0	₨ 21,852
Aggregate amounts of costs incurred and recognized profits (less recognized losses) upto the reporting date for contracts in progress	0	0	48,315
Amount of retentions	0	0	0
Gross amount due from customers for contract work presented as an asset	₨ 0	₨ 0	₨ 48,315

The aggregate amount of costs incurred and recognised profits, less recognised losses, to date on construction contracts in progress.

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- Definition

The amount recognised as an asset as the net of: (a) costs incurred plus recognised profits; less (b) the sum of recognised losses and progress billings for all contracts in progress for which costs incurred plus recognised profits (less recognised losses) exceeds progress billings.

+ References

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- Definition

The amount of progress billings on construction contracts that are not paid until the conditions specified in the contract for the payment of such amounts have been satisfied or until defects have been rectified. [Refer: Progress billings]

+ References

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- Definition

The amount of revenue arising from construction contracts. Construction contracts are contracts specifically negotiated for the construction of an asset or a combination of assets that are closely interrelated or interdependent in terms of their design, technology and function or their ultimate purpose or use. [Refer: Revenue]

+ References

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