Certainly I can confirm that CIDA does account for about two-thirds of the international assistance envelope. By way of comparison, the Department of Finance and the Department of Foreign Affairs and International Trade each account for 8% to 10% of that envelope. IDRC, the government's International Development Research Centre, accounts for about 3%, and then a variety of other government departments account for the balance. It would be speculation to say what might have been done should the international assistance envelope have continued to grow beyond the current fiscal year, so I can't comment on the split. Those are the facts as of today.
On April 19th, 2010. See this statement in context.