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Trade Receivables - Schedule of Trade Receivables (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2025
INR (₨)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
INR (₨)
Trade and other receivables [abstract]      
Trade receivables ₨ 124,215   ₨ 125,838
Allowance for lifetime expected credit loss (6,171)   (6,316)
Total 118,044   119,522
Non-current 299 $ 3 4,045
Current ₨ 117,745 $ 1,378 ₨ 115,477