From Longman Dictionary of Contemporary Englishhave the right ideahave the right ideaCORRECTto act or think in a way that will probably lead to the correct result He still makes a few mistakes but I reckon he’s got the right idea. → idea
Examples from the Corpus
have the right idea• The young lads have the right idea.• The new superintendent has the right idea about attacking illiteracy, but the wrong method.• Mrs Donaldson, in last month's letters page, certainly seems to have the right idea. 