Number of options outstanding, including both vested and non-vested options.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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+ References

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Stock Options Outstanding, Employees Stock Option Schemes (Detail) - Employees Stock Option Scheme	12 Months Ended
	Mar. 31, 2023 ₨ / shares shares	Mar. 31, 2023 ₨ / shares $ / shares shares	Mar. 31, 2022 ₨ / shares shares	Mar. 31, 2021 ₨ / shares shares	Mar. 31, 2020 ₨ / shares shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number Of Shares Arising Out Of Options \| shares	151,682,461	151,682,461	158,106,016	168,168,760	142,865,602
Weighted Average Exercise Price	₨ 1,264.86	₨ 1,264.86	₨ 1,175.65	₨ 1,063.79	₨ 899.03
Plan "F"
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price, Lower Range	₨ 716.6
Range of exercise price, Upper Range \| $ / shares		₨ 8.72
Number Of Shares Arising Out Of Options \| shares	7,449,626	7,449,626
Weighted Average Remaining Life	9 months 29 days	9 months 29 days
Weighted Average Exercise Price	₨ 716.6	₨ 716.6
Plan "G"
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price, Lower Range \| (per share)	882.85	₨ 10.74
Range of exercise price, Upper Range \| (per share)	₨ 1,673.1	₨ 20.36
Number Of Shares Arising Out Of Options \| shares	144,232,835	144,232,835
Weighted Average Remaining Life	2 years 10 months 13 days	2 years 10 months 13 days
Weighted Average Exercise Price	₨ 1,293.2	₨ 1,293.2