I’m afraid ideas, and even plans, won’t help much in relation to getting a programmer/developer on board. They have their own ideas and plans, so you need to offer something more.
You can do that by creating concept art and doing graphical mockups of the game (characters, levels, gameplay). You’ll need to do this upfront work if you’re going to convince anyone to work with you (I’m assuming it’s unpaid).
Just to be clear, it’s never going to be the case that someone will take your ideas and create a game with it. Even if you posted them here, in detail, it wouldn’t happen. At best/worst you might inspire some ideas in other games.