5329472026-08-265329472026-08-262026-08-265329472026-08-26in-capmkt:FinancialYear1Member5329472026-08-26in-capmkt:FinancialYear2Member5329472026-08-26in-capmkt:FinancialYear3Member5329472026-08-262026-08-26in-capmkt:FinancialYear1Member5329472026-08-262026-08-26in-capmkt:FinancialYear2Member5329472026-08-262026-08-26in-capmkt:FinancialYear3Memberiso4217:INRxbrli:pure532947IRB Infrastructure Developers LimitedIRBNOTLISTEDINE821I01022NewAcquisition (including agreement to acquire)true2026-08-2616:10:002026-08-26IRB Infrastructure Developers LimitedListed Entity (self)IRB InvIT Fund14845500000338610000077373000000falsefalsetrueInfrastructure - Roads and HighwaysThe proposed acquisition of units will enable the Trust to raise funds for acquisition of two project SPVs from IRB Infrastructure Trust, a privately listed infrastructure investment trust registered with the SEBI.YesThe proposed transaction is subject to the receipt of necessary regulatory approvals.falseThe units will be acquired by the Company within the time period prescribed for preferential allotment under applicable law.Cash3510000000Cash consideration for subscription to units in preferential issue of the Trust35100000000.17IRB InvIT Fund is settled by the Company (the “Sponsor”) pursuant to the Indenture of Trust dated October 16, 2015, as amended in Mumbai, India, as an irrevocable trust in accordance with the Indian Trusts Act, 1882. The Trust has been registered with SEBI as an Infrastructure Investment Trust under Securities and Exchange Board of India (Infrastructure Investment Trusts) Regulations, 2014 (“InvIT Regulations”). The object and purpose of the Trust is to carry on the activity of an infrastructure investment trust under the InvIT Regulations, to raise resources and make investments in accordance with the InvIT Regulations. The Trust is set up to own, operate and maintain a portfolio of ten revenue generating highway assets that includes eight BOT assets and two HAM assets, in the state(s) of Maharashtra, Gujarat, Rajasthan, Karnataka, Tamil Nadu Punjab, Haryana and Uttar Pradesh.2025-2026148455000002024-2025111024000002023-202410859000000INDIANeither the transaction is with a related party nor it is a related party transaction under SEBI (LODR) Regulations, 2015.