Is public knowledge - Idioms by The Free Dictionary
be public knowledge (redirected from is public knowledge)
be public knowledge
To be information that is available to anyone (the public) or that is generally or widely known. These reports will all be public knowledge after the trial is over, but for now they must remain secret.
be common/public ˈknowledge be something that everyone knows, especially in a particular community or group: What do you mean you’re surprised he’s leaving? I thought it was common knowledge that he was looking for another job!