FT reported yesterday that Germany, Italy and France of course also supports this as Britain can't run away from the bill. I can't imagine that many EU countries would not support this as the starting position at least. There's no real sense in making this bill lower than it should be in some attempt to look better in the negotiations. Everything the EU does will be seen as a punishment anyway in the British press, and I think they can expext reasonable understanding in the populations of the other 27 countries that Britain cannot escape the bill.
For some specific information of the parts of the bill, you can look at CER:
http://www.cer.org.uk/publications/archive/policy-brief/2017/%E2%82%AC60-billion-brexit-bill-how-disentangle-britain-eu-budget
