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Business Combination - Major Class of Identifiable Acquired Intangible Assets and Estimated Period of Amortisation (Detail) - Jul. 01, 2023 ₨ in Millions, $ in Millions | INR (₨) | USD ($)
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Total | ₨ 1,434,818.1 | $ 16,795.2
Brand [Member] | Relief from royalty method [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Fair Value | ₨ 750,758.2 | 8,788.0
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 | 4,328.5
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 | 2,595.6
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 | 697.0
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 | 349.6
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 | $ 36.5
Useful lives (in years) | 8 years |
Valuation Methodology | Comparison method |

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