XML 151 R139.htm IDEA: XBRL DOCUMENT v3.8.0.1
Employee Benefits - Summary of Employee Costs (Detail) - INR (₨)
₨ in Millions
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Disclosure of defined benefit plans [abstract]      
Salaries and bonus ₨ 261,981 ₨ 258,207 ₨ 237,130
Employee benefits plans      
Gratuity and other defined benefit plans 1,532 1,095 885
Defined contribution plans 7,363 7,037 5,985
Share based compensation 1,347 1,742 1,534
Total employee cost ₨ 272,223 ₨ 268,081 ₨ 245,534