Done And Done Meaning

(idiomatic) Done thoroughly and satisfactorily.

Example: 1800, Maria Edgeworth, Castle Rackrent
  â€œâ€˜Done,’ says my master; ‘I’ll lay you a hundred golden guineas to a tester you don’t.’ ‘Done,’ says the gauger; and done and done’s enough between two gentlemen.”
1859, William Makepeace Thackeray, The Virginians
  â€œI’ll take your bet — there. And so Done and Done.”
1848, James Fenimore Cooper, The Crater
  â€œDone and done between gentlemen, is enough, sir.”
1985, Robert Elman, Seasons of the hunter: an anthology (page 133)
  Done and done, he said to himself. And he felt pretty good. The anger and hurt that only a few hours before had been sharp and deep had dulled.
2001, "Bob Dalton", WinACE client offer (on newsgroup rec.games.empire)
  > Bob, you've done good work setting up and maintaining your site, and if you
> want to setup[sic] a WinACE page as a service to the empire community, I have no
> objection. Feel free to link [email protected] as the email address for
Done and done! It will be up in a few days and it will have it's[sic] own separate section with screen shots, etc. If you don't like what you see just let me know privately via my email address and I'll fix it.
2007, "CLM in ND", OT: It's over! Done and done! (on newsgroup alt.vacation.las-vegas)