XML 89 R77.htm IDEA: XBRL DOCUMENT v3.19.2
Goodwill and Intangible Assets - Summary of Movement in Goodwill Balance (Detail)
₨ in Millions, $ in Millions
12 Months Ended
Mar. 31, 2019
INR (₨)
Mar. 31, 2019
USD ($)
Mar. 31, 2018
INR (₨)
Reconciliation of changes in goodwill [abstract]      
Balance at the beginning of the year ₨ 117,584   ₨ 125,796
Translation adjustment 4,529   2,970
Disposal (Refer Note 22) (4,893)    
Acquisition through business combination     1,172
Assets reclassified as held for sale (240)   (12,354)
Balance at the end of the year ₨ 116,980 $ 1,691 ₨ 117,584