1
general::
Far away, forever, as in I don't know where it is? to hell and gone, or I can keep talking to hell and gone but it will do no good. This hyperbolic term dates from the first half of the 1900s.
American Heritage Idioms
2
general::
Phrase(s): to hell and gone
1. Inf. very much gone; lost completely. (Use hell with caution.) • All my hard work is to hell and gone. • When you see everything you’ve planned to hell and gone, you get kind of angry. 2. Go to all over creation.
McGrawhill's American Idioms And Phrasal Verbs