Is this idiom often used in a conversation meaning everything?
from the beginning to the end She told us everything about the trip, from soup to nuts.
http://idioms.thefreedictionary.com/From+Soup+to+Nuts
V.
I've never met with it before.
It's very common in the US.
It emphasizes the completeness of something.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.