XML 149 R137.htm IDEA: XBRL DOCUMENT v3.19.2
Earnings Per Equity Share - Summary of Basic Earnings Per Share (Detail)
₨ / shares in Units, $ / shares in Units, ₨ in Millions, $ in Millions
12 Months Ended
Mar. 31, 2019
INR (₨)
₨ / shares
shares
Mar. 31, 2019
USD ($)
$ / shares
shares
Mar. 31, 2018
INR (₨)
₨ / shares
shares
Mar. 31, 2017
INR (₨)
₨ / shares
shares
Earnings per share [abstract]        
Profit attributable to equity holders of the Company ₨ 90,031 $ 1,300 ₨ 80,081 ₨ 84,895
Weighted average number of equity shares outstanding 6,007,376,837 6,007,376,837 6,333,391,200 6,476,108,013
Basic earnings per share | (per share) ₨ 14.99 $ 0.22 ₨ 12.64 ₨ 13.11