| (Rs. in Millions) | 
| Particulars | Mar 2025 | Mar 2024 | Mar 2023 | Mar 2022 | Mar 2021 | 
| EQUITY AND LIABILITIES | 0 | 0 | 0 | 0 | 0 | 
| Share Capital | 2974.40 | 2974.40 | 2974.40 | 2974.40 | 602.60 | 
| Equity - Authorised | 3200.00 | 3200.00 | 3200.00 | 3200.00 | 1200.00 | 
| Equity - Issued | 3004.80 | 3004.80 | 3004.80 | 3004.80 | 633.00 | 
| Equity Paid Up | 2964.20 | 2964.20 | 2964.20 | 2964.20 | 592.40 | 
| Equity Shares Forfeited | 10.20 | 10.20 | 10.20 | 10.20 | 10.20 | 
| Adjustments to Equity | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Preference Capital Paid Up | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Face Value | 10.00 | 10.00 | 10.00 | 10.00 | 10.00 | 
| Share Warrants & Outstandings | 281.10 | 201.80 | 116.30 | 32.20 | 25.40 | 
| Total Reserves | 112431.00 | 101960.90 | 89444.80 | 73241.40 | 62324.70 | 
| Securities Premium | 5100.90 | 5095.60 | 5095.60 | 5095.60 | 7362.50 | 
| Capital Reserves | 2191.90 | 2191.90 | 2191.90 | 2191.90 | 2191.90 | 
| Profit & Loss Account Balance | 98555.80 | 88011.50 | 76439.80 | 58419.50 | 45515.80 | 
| General Reserves | 7110.40 | 7110.40 | 7110.40 | 6485.40 | 6485.40 | 
| Other Reserves | -528.00 | -448.50 | -1392.90 | 1049.00 | 769.10 | 
| Reserve excluding Revaluation Reserve | 112431.00 | 101960.90 | 89444.80 | 73241.40 | 62324.70 | 
| Revaluation reserve | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Shareholder's Funds | 115686.50 | 105137.10 | 92535.50 | 76248.00 | 62952.70 | 
| Minority Interest | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Long-Term Borrowings | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Secured Loans | 15666.00 | 16620.60 | 17265.30 | 11897.30 | 14222.40 | 
| Non Convertible Debentures | 0.00 | 0.00 | 0.00 | 2500.00 | 2500.00 | 
| Converible Debentures & Bonds | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Packing Credit - Bank | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Inter Corporate & Security Deposit | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Term Loans - Banks | 14530.10 | 18826.80 | 19825.70 | 14611.50 | 13878.10 | 
| Term Loans - Institutions | 6595.60 | 6863.20 | 1095.10 | 1410.70 | 1750.10 | 
| Other Secured | -5459.70 | -9069.40 | -3655.50 | -6624.90 | -3905.80 | 
| Unsecured Loans | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Fixed Deposits - Public | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Loans and advances from subsidiaries | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Inter Corporate Deposits (Unsecured) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Foreign Currency Convertible Notes | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Long Term Loan in Foreign Currency | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Loans - Banks | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Loans - Govt. | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Loans - Others | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Other Unsecured Loan | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Deferred Tax Assets / Liabilities | 9932.00 | 8802.80 | 7493.40 | 6130.40 | 3264.60 | 
| Deferred Tax Assets | 501.00 | 438.40 | 701.30 | 795.40 | 2938.30 | 
| Deferred Tax Liability | 10433.00 | 9241.20 | 8194.70 | 6925.80 | 6202.90 | 
| Other Long Term Liabilities | 2007.90 | 2053.00 | 2852.00 | 2487.10 | 643.70 | 
| Long Term Trade Payables | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Long Term Provisions | 676.30 | 609.60 | 518.40 | 448.60 | 382.30 | 
| Total Non-Current Liabilities | 28282.20 | 28086.00 | 28129.10 | 20963.40 | 18513.00 | 
| Current Liabilities | 0 | 0 | 0 | 0 | 0 | 
| Trade Payables | 15702.50 | 15678.10 | 16491.70 | 13403.70 | 11964.90 | 
| Sundry Creditors | 12634.60 | 12319.90 | 12267.90 | 11441.70 | 10888.80 | 
| Acceptances | 3067.90 | 3358.20 | 4223.80 | 1962.00 | 1076.10 | 
| Due to Subsidiaries- Trade Payables | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Other Current Liabilities | 8980.50 | 14129.80 | 8706.70 | 9388.60 | 5892.50 | 
| Bank Overdraft / Short term credit | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Advances received from customers | 211.30 | 232.10 | 403.70 | 238.50 | 135.30 | 
| Interest Accrued But Not Due | 183.20 | 195.10 | 132.50 | 37.00 | 44.70 | 
| Share Application Money | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Current maturity of Debentures & Bonds | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Current maturity - Others | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Other Liabilities | 8586.00 | 13702.60 | 8170.50 | 9113.10 | 5712.50 | 
| Short Term Borrowings | 11409.00 | 10425.10 | 9471.80 | 9226.80 | 7622.60 | 
| Secured ST Loans repayable on Demands | 6376.80 | 5881.80 | 3819.70 | 1583.00 | 2805.30 | 
| Working Capital Loans- Sec | 6376.80 | 5881.80 | 3819.70 | 0.00 | 0.00 | 
| Buyers Credits - Unsec | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Commercial Borrowings- Unsec | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Other Unsecured Loans | -1344.60 | -1338.50 | 1832.40 | 7643.80 | 4817.30 | 
| Short Term Provisions | 243.50 | 190.30 | 179.30 | 151.70 | 167.30 | 
| Proposed Equity Dividend | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Provision for Corporate Dividend Tax | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Provision for Tax | 166.00 | 117.60 | 116.50 | 97.50 | 97.30 | 
| Provision for post retirement benefits | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Preference Dividend | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Other Provisions | 77.50 | 72.70 | 62.80 | 54.20 | 70.00 | 
| Total Current Liabilities | 36335.50 | 40423.30 | 34849.50 | 32170.80 | 25647.30 | 
| Total Liabilities | 180304.20 | 173646.40 | 155514.10 | 129382.20 | 107113.00 | 
| ASSETS | 0 | 0 | 0 | 0 | 0 | 
| Gross Block | 144737.00 | 135056.30 | 102275.30 | 82367.00 | 76709.10 | 
| Less: Accumulated Depreciation | 36643.90 | 30670.80 | 25533.30 | 21227.20 | 17753.20 | 
| Less: Impairment of Assets | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Net Block | 108093.10 | 104385.50 | 76742.00 | 61139.80 | 58955.90 | 
| Lease Adjustment A/c | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Capital Work in Progress | 7019.10 | 7447.90 | 21289.50 | 16170.40 | 4361.30 | 
| Non Current Investments | 7825.40 | 6297.70 | 928.20 | 928.20 | 877.60 | 
| Long Term Investment | 7825.40 | 6297.70 | 928.20 | 928.20 | 877.60 | 
| Quoted | 1166.10 | 1160.00 | 0.00 | 0.00 | 0.00 | 
| Unquoted | 7880.90 | 5181.10 | 971.60 | 971.60 | 921.00 | 
| Long Term Loans & Advances | 4733.00 | 4062.40 | 6352.00 | 6380.10 | 5534.30 | 
| Other Non Current Assets | 1053.20 | 1553.60 | 167.70 | 1413.60 | 809.80 | 
| Total Non-Current Assets | 128723.80 | 123747.10 | 105479.40 | 86032.10 | 70538.90 | 
| Current Assets  Loans & Advances | 0 | 0 | 0 | 0 | 0 | 
| Currents Investments | 7045.30 | 4055.80 | 4900.50 | 3167.40 | 4125.20 | 
| Quoted | 0.00 | 844.40 | 1363.20 | 1948.80 | 2153.60 | 
| Unquoted | 7045.30 | 3211.40 | 3537.30 | 1218.60 | 1971.60 | 
| Inventories | 18048.80 | 19010.10 | 18486.70 | 17508.80 | 12867.00 | 
| Raw Materials | 7457.50 | 8412.20 | 8930.80 | 8550.10 | 5971.00 | 
| Work-in Progress | 2677.10 | 2334.70 | 1987.40 | 1893.60 | 1489.70 | 
| Finished Goods | 3264.60 | 4038.10 | 3389.90 | 3125.90 | 2059.50 | 
| Packing Materials | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Stores  and Spare | 3823.80 | 3604.20 | 3469.20 | 2654.50 | 2538.70 | 
| Other Inventory | 825.80 | 620.90 | 709.40 | 1284.70 | 808.10 | 
| Sundry Debtors | 17651.40 | 15380.00 | 14363.80 | 13509.90 | 10120.00 | 
| Debtors more than Six months | 42.00 | 17.90 | 26.40 | 22.80 | 52.30 | 
| Debtors Others | 17635.70 | 15380.00 | 14363.80 | 13509.90 | 10107.30 | 
| Cash and Bank | 3291.00 | 3699.80 | 5357.30 | 3285.10 | 2304.30 | 
| Cash in hand | 6.30 | 6.30 | 7.10 | 7.20 | 7.50 | 
| Balances at Bank | 3284.70 | 3693.50 | 5350.20 | 3277.90 | 2296.80 | 
| Other cash and bank balances | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Other Current Assets | 1553.50 | 2567.80 | 2890.60 | 2725.50 | 2765.60 | 
| Interest accrued on Investments | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Interest accrued on Debentures | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Deposits with Government | 163.80 | 190.10 | 171.20 | 153.50 | 174.10 | 
| Interest accrued and or due on loans | 22.30 | 56.90 | 76.60 | 0.00 | 0.00 | 
| Prepaid Expenses | 314.70 | 263.90 | 220.20 | 145.00 | 91.30 | 
| Other current_assets | 1052.70 | 2056.90 | 2422.60 | 2427.00 | 2500.20 | 
| Short Term Loans and Advances | 3990.40 | 5185.80 | 4035.80 | 3123.40 | 4392.00 | 
| Advances recoverable in cash or in kind | 926.80 | 755.00 | 1056.60 | 907.80 | 878.20 | 
| Advance income tax and TDS | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Amounts due from directors | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Due From Subsidiaries | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Inter corporate deposits | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Corporate Deposits | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Other Loans & Advances | 3063.60 | 4430.80 | 2979.20 | 2215.60 | 3513.80 | 
| Total Current Assets | 51580.40 | 49899.30 | 50034.70 | 43320.10 | 36574.10 | 
| Net Current Assets (Including Current Investments) | 15244.90 | 9476.00 | 15185.20 | 11149.30 | 10926.80 | 
| Miscellaneous Expenses not written off | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 
| Total Assets | 180304.20 | 173646.40 | 155514.10 | 129382.20 | 107113.00 | 
| Contingent Liabilities | 4663.50 | 2923.80 | 2805.90 | 790.80 | 790.00 | 
| Total Debt | 32534.70 | 36115.10 | 30392.60 | 27749.00 | 25750.80 | 
| Book Value | 389.30 | 353.97 | 311.75 | 257.09 | 1062.07 | 
| Adjusted Book Value | 389.30 | 353.97 | 311.75 | 257.09 | 212.41 |