i believe the article states that the money went to the Trudeau senoir foundation and their is an intent for a downstream donation in kind to the library. 
Are you familiar with how a foundation works?
After the donation of the million  the founadation board must approve the next donation , less fees if applicable..  
Its that fees etc part that can be the rub and wealth enhancer if the foundation is being navigated for personal gain
But in this case , no reason to not believe that it will be a direct donation of a $ million  in Pierres' name.
Makes everyone living feel warm and fuzzy and helps move the process along.,(or in the case of a hospital - buys you front of the line attention)
thats how it works