The Indonesian Rupiah (IDR) is the official currency of Indonesia and is used in all financial transactions. It is an important currency in the international investment and financial markets, as it is the most commonly used currency in Indonesia. Investors use the Rupiah to invest in Indonesian stocks, bonds, and other financial instruments. The Rupiah is also used in foreign exchange markets, where investors can buy and sell the currency to make profits. The Rupiah is also used to purchase Indonesian goods and services, enabling investors to benefit from the country's strong economic growth.