I might just add that we talked earlier about the volume of budget documentation, but that is one area where the Senate has a process where all the detailed budget information that's put out is actually referred to by Senators in their questioning. They go through this budget documentation in detail and can ask some very specific questions.
Evidence of meeting #17 for Government Operations and Estimates in the 42nd Parliament, 1st session. (The original version is on Parliament’s site, as are the minutes.) The winning word was appropriations.
A recording is available from Parliament.