I've been offered a promotion that, for a large number of reasons, I have no interest in taking. I had actually already decided to leave my current company, and my rejection really only accelerates my departure.
The position does represent what should be the next step in my career, but I am not going to make that step with this employer. I would, however, still like to make it as soon as possible.
I want to do my best to use this promotion as leverage when seeking a new position over the next couple of months -- to help me find a position similar title- and responsibility-wise to the offer, rather than to my current job.
"Offered a promotion" doesn't seem like an appropriate point to put on a résumé, or even in a cover letter, although I would like to make it known as early as possible in the application process -- I'm likely to have a lot of competition. (I should perhaps also note that I've previously held a position similar to the offered one, which does appear on my résumé.) I can certainly get into it during the interview, but I don't know how much detail to provide a potential employer about my reasons for refusing.
How can I best use this offer, during any stage of my search, to get a more satisfactory offer somewhere else?