Drawing still? Or already Modeling?
Focus on the essential!
The answer to the question which tool is most frequently used to create process documentation, is VISIO. Unfortunately, this is not for the reason that this tool is particularly useful. Compared to a professional tool, it is more a "drawing program".
A dedicated modeling tool such as SIRIUSlogic® frees you from the task of laboriously generating process documentation by hand, and gives you more time to devote yourself to the actual task.
Take some time to figure out how to save time and energy in the future in process modeling, and simultaneously create more detailed process documentation.