Inevitably, the management of a company is related to the idea and details that you bring to the table as a co-founder. So if you want to see your idea through you will still need to provide at least some leadership.
If you don't want to manage the company, depending on your specific knowledge, you can fulfill other roles, like creative director, technical lead, etc.
If you have sufficient capital and you want to get a VC interested, try to convince a very bright and driven individual, hopefully someone who has been your friend or acquaintance for a long time, someone with whom you have no problem being 100% honest, and attempt to implement the smallest functional subset of your idea.
Then, try to do a soft launch and see how much traction you get.
Traction (growth of userbase) is one of the major things investors usually want to see to indicate the quality of the product, founders, and company. It's not necessarily hard but it requires substantive work from each of the founders.This information may be useful http://www.whereorg.com/startup-metals-11292041