Here in the U.S., my exposure to idols is limited to strolling past the school supply sections of some stores and seeing Justin Bieber's mug plastered on notebooks and binders. In Japan, I saw a lot more of that sort of thing, and I don't mean more junky fodder for "Beliebers", but rather just a lot of wide-eyed nymphettes and girly-boys. Part of the reason for that was that I lived in a city so I saw more product and advertising, but another is that "idols" in Japan aren't just for the younger set. They're also there for adults, particularly men, so there's a wider audience for such fodder.
I really don't miss seeing the endless, almost identical parade of similar-looking boys and girls that comprised the "idol" set in Japan.