v3.26.1
Employee benefits (Details Textual) - INR (₨)
₨ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Detailed Information About Employee Benefit Plans [Line Items]      
Employee benefits expense [1] ₨ 59,909 ₨ 55,800 ₨ 50,300
Weighted average duration of defined benefit obligation 6 years 2 months 8 days 5 years 4 months 24 days  
Gratuity Benefits Of Parent [Member]      
Detailed Information About Employee Benefit Plans [Line Items]      
Transfer of plan assets on account of transfer for employees ₨ 1 ₨ 0  
Wockhardt Limited [Member]      
Detailed Information About Employee Benefit Plans [Line Items]      
Transfer of liabilities on restructuring of services 3 7  
Provident Fund Benefits [Member]      
Detailed Information About Employee Benefit Plans [Line Items]      
Post-employment benefit expense, defined contribution plans ₨ 1,594 1,464 1,316
Contributions to Plan By Plan Participants Defined Contributions Plan (Percentage) 12.00%    
Superannuation Benefits [Member]      
Detailed Information About Employee Benefit Plans [Line Items]      
Post-employment benefit expense, defined contribution plans ₨ 142 151 133
US 401kretirement savings Plan [Member]      
Detailed Information About Employee Benefit Plans [Line Items]      
Social security contributions 163 241 225
UK social securiy plan [Member]      
Detailed Information About Employee Benefit Plans [Line Items]      
Social security contributions 194 293 ₨ 251
Compensated Absences [Member]      
Detailed Information About Employee Benefit Plans [Line Items]      
Liabilities Defined Contribution Plan 1,018 ₨ 939  
Implications Of The New Labour Codes [Member]      
Detailed Information About Employee Benefit Plans [Line Items]      
Employee benefits expense ₨ 1,170    
[1] Refer to Note 26 regarding the impact of the New Labour Codes during the year ended March 31, 2026.