Earnings Per Equity Share - Summary of Basic Earnings Per Share (Detail) ₨ / shares in Units, $ / shares in Units, ₨ in Millions, $ in Millions	12 Months Ended
Mar. 31, 2023 INR (₨) ₨ / shares shares	Mar. 31, 2023 USD ($) $ / shares shares	Mar. 31, 2022 INR (₨) ₨ / shares shares	Mar. 31, 2021 INR (₨) ₨ / shares shares
Earnings per share [abstract]
Profit attributable to equity holders of the Company	₨ 113,500	$ 1,381	₨ 122,191	₨ 107,946
Weighted average number of equity shares outstanding	5,477,466,573	5,477,466,573	5,466,705,840	5,649,265,885
Basic earnings per share \| (per share)	₨ 20.73	$ 0.25	₨ 22.35	₨ 19.11

The amount of profit (loss) attributable to ordinary equity holders of the parent entity (the numerator) divided by the weighted average number of ordinary shares outstanding during the period (the denominator).

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The profit (loss) from continuing and discontinued operations attributable to owners of the parent. [Refer: Profit (loss)]

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The number of ordinary shares outstanding at the beginning of the period, adjusted by the number of ordinary shares bought back or issued during the period multiplied by a time-weighting factor.

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