彼のアイデア

his idea

→ 彼
phrase Rare #32,181
his idea 彼の means “his,” and アイデア means “idea.” アイディア is an alternative spelling and pronunciation.
JA: 彼のアイデアはとても面白いです。
EN: His idea is very interesting.

彼のアイデア

It's his idea.

— どん底作家の人生に幸あれ! (2019)

あれは彼のアイデア

That was his idea.

— ファイト・クラブ (1999)

彼のアイデアなんです

It's his idea.

彼のアイデアは全く価値がない

His idea is completely worthless.