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Additional Capital Disclosures - Summary of Capital Structure (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2019
INR (₨)
Mar. 31, 2019
USD ($)
Mar. 31, 2018
INR (₨)
Capital structure [abstract]      
Equity attributable to the equity shareholders of the Company ₨ 568,116 $ 8,214 ₨ 482,936
As percentage of total capital 85.00% 85.00% 78.00%
Current loans, borrowings and bank overdrafts ₨ 71,099 $ 1,028 ₨ 92,991
Long-term loans and borrowings 28,368 $ 410 45,268
Total loans, borrowings and bank overdrafts ₨ 99,467   ₨ 138,259
As percentage of total capital 15.00% 15.00% 22.00%
Total capital (loans, borrowings and bank overdrafts and equity) ₨ 667,583   ₨ 621,195
Percentage of change, Equity attributable to the equity shareholders of the Company 17.64% 17.64%  
Percentage of change, Total loans and borrowings (28.06%) (28.06%)  
Percentage of change, Total capital (loans and borrowings and equity) 7.47% 7.47%