Basically what the title says, Does editing your own post leave details about each edit?
Yes, unless you do more than one edit within a 5-minute window.
Edits by a user to their own post are shown in the post's revision history (random example).
But more than one edit by the same user to any post within 5 minutes, if no comments or answers are added during that 5-minute window, are all rolled into a single edit in the revision history. See also questions with the [grace-period] tag on main meta for more details about how this works. This is called shadow-editing, and just for fun, I've done it on this very answer here: first posting it with just the first two paragraphs, and then going back to edit in more text within a 5-minute window.
(This is useful for people who wish to be the so-called Fastest Gun in the West: a user can post a short and minimal answer in order to be the first to answer a given question, and then edit their answer to be longer, better, and more detailed, and these changes will not show in the answer's revision history provided they're all done within 5 minutes. This strategy has often been employed by users such as DVK,
Richard Valorum, Jason Baker, and myself.)