XML 26 R100.htm IDEA: XBRL DOCUMENT v3.20.1
Cash and Cash Equivalents - Summary of Cash and Cash Equivalents for the Purpose of Cash Flow Statement (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2020
INR (₨)
Mar. 31, 2020
USD ($)
Mar. 31, 2019
INR (₨)
Mar. 31, 2019
USD ($)
Mar. 31, 2018
INR (₨)
Mar. 31, 2017
INR (₨)
Cash and cash equivalents [abstract]            
Cash and cash equivalents (as above) ₨ 144,499 $ 1,917 ₨ 158,529   ₨ 44,925  
Bank overdrafts (395)   (4)   (3,999)  
Total ₨ 144,104 $ 1,912 ₨ 158,525 $ 2,103 ₨ 40,926 ₨ 50,718