An IDR is a receipt, declaring ownership of shares of a foreign company. These receipts can be listed in India and traded in rupees. Just like overseas investors in the US-listed American Depository Receipts (ADRs) of Infosys and Wipro get receipts against ownership of shares held by an Indian custodian, an IDR is proof of ownership of foreign company's shares. The IDRs are denominated in Indian currency and are issued by a domestic depository and the underlying equity shares are secured with a custodian.