I don't represent that Wikipedia is an authoritative source on all subjects, it's merely usually the top result for any internet search. In this case it also happens to confirm something I had known independently through another source.
Finally, you misunderstand: what I'm talking about is the final r (the 'rhotic') on the word 'idea'. It is added at the end of such words when the next word will also be a vowel or some set of vowels. This is called 'intrusive r' and is present in many British dialects, including RP. This is what I said, in support of the original poster. My example 'dramar' and 'idear' are meant to phoneticize in an AMERICAN way the British pronunciation.
'Dramar' or 'drama-er', 'idear' or 'idee-er', no matter how the write it the concept is the same.