yen to idrYen to Rupiah Forecast, JPY to IDR foren exchange rate prediction, buy and sell snals. Rate target in 14 days: 115.171. The best long-term & short-term JPYIDR FXJapanese Yen Indonesian Rupiah traded at 113.683 this Friday May 23rd, increasing 0.062 or 0.05 percent since the previous trading session. Looking back, over the last four weeks,