Because it is an Adobe-managed font, it ensures that documents created in InDesign, Illustrator, or Acrobat look identical whether they are opened on a Mac or a PC.
Since this is an Adobe Exclusive, the download process is not a simple "click-and-save." It requires an active Adobe Creative Cloud subscription (even the Photography plan works). Here is the step-by-step walkthrough. quicktype ii courier a font download adobe exclusive