Noun
done deal (plural done deals)
(idiomatic) An agreement that has been finally resolved or decided.
I've learned the hard lesson that you can't pin your heart on anything until it's a completely done deal. William Kempe
We see a successful, elegant man now, but as a child, an adolescent, his life was not a done deal. Sidney respected his mistakes. When failure came, he never said, "This is too difficult, too hard," he had the resiliency to try again. His life is somewhere between astounding and unbelievable. Bill Cosby
The big news already broke. The file-sharing and all that stuff, it's a done deal. And I think figuring out how to make that a fair exchange for the people that make music is still an issue. Liz Phair
One of the great things about history is that it sort of isn't a done deal - ever. The historical texts and the historical evidence that you use is always somehow giving you different answers because you're asking it different questions. Mary Beard