v3.26.1
Business Combination - Major classess of Identifiable Acquired Intangible Assets and Estimated Period of Amortisation (Detail)
₨ in Millions
Jul. 01, 2023
INR (₨)
Finite-Lived Intangible Assets [Line Items]  
Total ₨ 1,434,818.1
Brand [Member] | Relief from royalty method [Member]  
Finite-Lived Intangible Assets [Line Items]  
Estimated Fair Value ₨ 750,758.2
Valuation Methodology Relief from royalty method
Investment management contract [Member] | Multi-period excess earnings method [Member]  
Finite-Lived Intangible Assets [Line Items]  
Estimated Fair Value ₨ 369,785.6
Valuation Methodology Multi-period excess earnings method
Value of business acquired [Member] | Refer below [Member]  
Finite-Lived Intangible Assets [Line Items]  
Estimated Fair Value ₨ 221,738.5
Valuation Methodology Refer below
Distribution network [Member] | Multi-period excess earnings method [Member]  
Finite-Lived Intangible Assets [Line Items]  
Estimated Fair Value ₨ 59,543.2
Useful lives (in years) 17 years
Valuation Methodology Multi-period excess earnings method
Customer relationship [Member] | Multi-period excess earnings method [Member]  
Finite-Lived Intangible Assets [Line Items]  
Estimated Fair Value ₨ 29,874.9
Useful lives (in years) 17 years
Valuation Methodology Multi-period excess earnings method
Transferable development rights [Member] | Comparison method [Member]  
Finite-Lived Intangible Assets [Line Items]  
Estimated Fair Value ₨ 3,117.7
Useful lives (in years) 8 years
Valuation Methodology Comparison method