Goodwill and Intangible assets - Intangible Assets, Net (Parenthetical) (Detail) - Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] - HDFC Credila Financial Services Limited [Member] ₨ in Millions |
12 Months Ended |
|---|---|
|
Mar. 31, 2026
INR (₨)
| |
| 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 |
| 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 |