What does Idris mean?
Traditionally linked by Arabic sources to the root d-r-s (د-ر-س, 'to study, to learn'), giving 'studious, learned'; another old interpretation is 'interpreter'. Many scholars regard the ultimate origin as non-Arabic, since Idris is the Quranic prophet traditionally identified with the Biblical Enoch. The meaning is therefore disputed.
What does Hassan mean?
From Arabic حسن (ḥasan) 'handsome, beautiful, good', from the root ḥ-s-n which also gives husn ('beauty'). The sense spans moral goodness and physical beauty.