From 1997 (first link):
https://home.cern/news/press-release/cern/us-contribute-531-million-cerns-large-hadron-collider-project
Countries involved:
https://home.cern/about/who-we-are/our-governance/member-states
Some details on runniing costs:
https://www.forbes.com/sites/alexknapp/2012/07/05/how-much-does-it-cost-to-find-a-higgs-boson/