Get the URL of the display form of a document

I need to get the URL of the display form for a document. Technically, I know I can get the URL to the library and add on the /forms/displayform.aspx?ID={variable}, but is there already a field for that somewhere that I'm not noticing?

I'm not trying to be lazy (necessarily ), but I am syncing data to a SQL backend from several different lists and will need to do this in multiple workflows and run it through every time the item gets modified. I'm trying to make sure there isn't a more streamlined way to do it than to build the URL each time.

Any insight is appreciated!