v3.25.2
Business Combination - Goodwill Recorded as a Result of the Acquisition to the Bank's Reportable Segments (Detail)
₨ in Millions, $ in Millions
Mar. 31, 2025
INR (₨)
Mar. 31, 2025
USD ($)
Mar. 31, 2024
INR (₨)
Mar. 31, 2024
USD ($)
Jul. 01, 2023
INR (₨)
Jul. 01, 2023
USD ($)
Mar. 31, 2023
INR (₨)
Business Combination Segment Allocation [Line Items]              
Goodwill ₨ 1,629,510.3 $ 19,074.2 ₨ 1,629,510.3 $ 19,074.2     ₨ 74,937.9
Retail Banking [Member]              
Business Combination Segment Allocation [Line Items]              
Goodwill 443,017.5   443,017.5       74,937.9
Wholesale Banking [Member]              
Business Combination Segment Allocation [Line Items]              
Goodwill 71,617.3   71,617.3       0.0
Insurance Services [Member]              
Business Combination Segment Allocation [Line Items]              
Goodwill 959,080.0   959,080.0       0.0
Others [Member]              
Business Combination Segment Allocation [Line Items]              
Goodwill ₨ 155,795.5   155,795.5       ₨ 0.0
eHDFC [Member]              
Business Combination Segment Allocation [Line Items]              
Goodwill     ₨ 1,628,148.5   ₨ 1,628,148.5 $ 19,058.3  
eHDFC [Member] | Retail Banking [Member]              
Business Combination Segment Allocation [Line Items]              
Goodwill         368,079.6 4,308.6  
eHDFC [Member] | Wholesale Banking [Member]              
Business Combination Segment Allocation [Line Items]              
Goodwill         71,617.3 838.3  
eHDFC [Member] | Insurance Services [Member]              
Business Combination Segment Allocation [Line Items]              
Goodwill         959,080.0 11,226.5  
eHDFC [Member] | Others [Member]              
Business Combination Segment Allocation [Line Items]              
Goodwill         ₨ 229,371.6 $ 2,684.9