Hi!
At this url you will find the daily currency in all world currency (indonesian rupiah included)
http://www.xe.com/ucc/ if you want to change US Dollar in Rupiah, be sure to change big bank note (100 US $) because you will get a better rate! Money Changer and Indonesian Bank like new bank note, if your bank note are crumpled, written on it or stamped by Dubai's banks they can refused your money! No joke it's happened to me!
Better change money in main city (the rate are better!), Airport Money changer is lowest rates (like every where in the world!)
You are not allowed to bring back with you more than 50 000 Rupiah, it's against the Indonesian law but no control but don't forget to keep 100 000 Rupiah to pay your departure tax! hahahahh
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