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Foreign Currency Translation Reserve - Summary of Movement in Foreign Currency Translation Reserve Attributable to Equity Holders (Detail) ₨ in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2019 INR (₨) | Mar. 31, 2019 USD ($) | Mar. 31, 2018 INR (₨) | Mar. 31, 2017 INR (₨)
Disclosure of foreign currency translation reserves [line items] |  |  |  |
Balance at the beginning of the year | ₨ 485,346 |  | ₨ 522,695 | ₨ 467,384
Translation difference related to foreign operations, net | 3,238 | $ 47 | 3,576 | (3,354)
Change in effective portion of hedges of net investment in foreign operations | (287) | (4) | (49) | 276
Total comprehensive income for the year | 91,196 | 1,317 | 76,975 | 87,241
Balance at the end of the year | 570,753 | 8,252 | 485,346 | 522,695
Hosted data center services business [member] |  |  |  |
Disclosure of foreign currency translation reserves [line items] |  |  |  |
Reclassification of foreign currency translation differences to profit and loss on sale of business | 4,131 |  |  |
Workday business [member] |  |  |  |
Disclosure of foreign currency translation reserves [line items] |  |  |  |
Reclassification of foreign currency translation differences to profit and loss on sale of business | 79 |  |  |
Foreign currency translation reserve [member] |  |  |  |
Disclosure of foreign currency translation reserves [line items] |  |  |  |
Balance at the beginning of the year | 16,618 |  | 13,107 | 16,116
Translation difference related to foreign operations, net | 3,129 |  | 3,560 |
Change in effective portion of hedges of net investment in foreign operations | (287) |  | (49) |
Total comprehensive income for the year | (1,368) |  | 3,511 | (3,009)
Balance at the end of the year | 15,250 | $ 221 | ₨ 16,618 | ₨ 13,107
Foreign currency translation reserve [member] | Hosted data center services business [member] |  |  |  |
Disclosure of foreign currency translation reserves [line items] |  |  |  |
Reclassification of foreign currency translation differences to profit and loss on sale of business | (4,131) |  |  |
Foreign currency translation reserve [member] | Workday business [member] |  |  |  |
Disclosure of foreign currency translation reserves [line items] |  |  |  |
Reclassification of foreign currency translation differences to profit and loss on sale of business | ₨ (79) |  |  |

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