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Activity in the RSU's outstanding under the various Employees' Stock Incentive Master Scheme (Detail) - 12 months ended Mar. 31, 2023 - Restricted Stock Units (RSUs) [Member]
₨ / shares
shares
$ / shares
₨ / shares
shares
Schedule of Restricted Stock Shares Activity [Line Items]    
Weighted average fair value of RSUs granted during the year | $ / shares   $ 1
Employee Stock Incentive Master Scheme Two Thousand And Twenty Two [Member]    
Schedule of Restricted Stock Shares Activity [Line Items]    
RSUs outstanding, beginning of period | shares 0 0
Granted | shares 2,891,000 2,891,000
Exercised | shares 0 0
Forfeited | shares 0 0
Lapsed | shares 0 0
RSUs outstanding, end of period | shares 2,891,000 2,891,000
RSUs exercisable, end of period | shares 0 0
RSUs outstanding, beginning of period ₨ 0  
Granted 1  
Exercised 0  
Forfeited 0  
Lapsed 0  
RSUs outstanding, end of period 1  
RSUs exercisable, end of period 0 $ 0
Weighted average fair value of RSUs granted during the year ₨ 1,382.34