Goodwill and Intangible assets - Intangible Assets, Net (Parenthetical) (Detail) - 12 months ended Mar. 31, 2025 - Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] - HDFC Credila Financial Services Limited [Member] ₨ in Millions, $ in Millions |
INR (₨) |
USD ($) |
|---|---|---|
| Brand [Member] | ||
| Finite And Indefinite Lived Intangible Assets [Line Items] | ||
| Indefinite lived intangible assets written off related to sale of business unit | ₨ 8,527.5 | $ 99.9 |
| Distribution Service [Member] | ||
| Finite And Indefinite Lived Intangible Assets [Line Items] | ||
| Indefinite lived intangible assets written off related to sale of business unit | ₨ 8,972.4 | $ 105.0 |