No - 100Mbs is not on offer in Indonesia. That requires 4G technology - see 4G - Wikipedia, the free encyclopedia - which has not been implemented by any Indonesian companies.
Here 3G - see 3G - Wikipedia, the free encyclopedia - is fairly widespread in the more populated areas. This allows connections up to 7 Mbps - but your provider may set a lower speed than this. Using Telkomsel, I do get 7 Mbps connections to my local cell tower, but their backbone network never delivers more than about 2 or3 Mbps. This means you can sometimes get a movie (maybe 700 MB) in about 1 hour. For Indonesia this is really fast.