Jolie is 'heroic' says Pitt
Angelina revealed the news in an article for The New York Times and has been praised by health campaigners for helping raise awareness of breast cancer.
Fight Club star Brad said it marked "a happy day for our family".
Speaking to the Evening Standard, he said: "Having witnessed this decision first hand, I find Angie's choice, as well as so many others like her, absolutely heroic. I thank our medical team for their care and focus.
"All I want for is for her to have a long and healthy life, with myself and our children. This is a happy day for our family."
The Tomb Raider Actress and campaigner said doctors told her she had an 87% risk of breast cancer and a 50% risk of ovarian cancer.
She said she was writing about her ordeal in the hope that other women might benefit from her experience.
The star, in an article entitled My Medical Choice, said she finished the three months of medical procedures on April 27, and added: ''During that time I have been able to keep this private and to carry on with my work.''
She wrote: ''I am fortunate to have a partner, Brad Pitt, who is so loving and supportive."