XML 191 R155.htm IDEA: XBRL DOCUMENT v3.20.1
Employee Benefits - Summary of Employee Costs (Detail) - INR (₨)
₨ in Millions
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Disclosure of defined benefit plans [abstract]      
Salaries and bonus ₨ 315,036 ₨ 289,005 ₨ 261,981
Employee benefits plans      
Gratuity and other defined benefit plans 1,845 1,459 1,532
Defined contribution plans 8,428 7,372 7,363
Share based compensation 1,262 1,938 1,347
Total employee cost ₨ 326,571 ₨ 299,774 ₨ 272,223