The word(s) "idea" appears 2 time(s) in 2 verse(s) in Quran in Muhammad Habib Shakir translation.

(1) What is then your idea about the Lord of the worlds?

(2) Those who keep aloof from the great sins and the indecencies but the passing idea; surely your Lord is liberal in forgiving. He knows you best when He brings you forth from the earth and when you are embryos in the wombs of your mothers; therefore do not attribute purity to your souls; He knows him best who guards (against evil).