It is a very valid question. Are both programs funded by the same vote? The government does not have the right to take moneys from one vote and use them in another. However, it may realign amounts within a vote.
You wanted to know also when you would receive the detailed information from the Estimates. Those amounts are submitted through a Supply Bill. When an initiative is announced in a Budget, approval is in two stages. First, Parliament votes on the budget, generally in the Spring, and departments are not allowed to spend those amounts before Supplementary Estimates are... Last year, we had a situation that proved that we could not necessarily rely on that process and so the Treasury Board Secretariat now demands that departments wait for Parliament's approval.