Bill and Melinda Gates are going their separate ways after 27 years of marriage.

In a joint statement, the couple announced they’ve made a decision to get divorced.

After a great deal of thought and a lot of work on our relationship, we have made the decision to end our marriage,” the statement reads.

“Over the last 27 years, we have raised three incredible children and built a foundation that works all over the world to enable all people to lead healthy, productive lives.

We continue to share a belief in that mission and will continue our work together at the foundation, but we no longer believe we can grow together as a couple in the next phase of our lives,” it added.

Melinda Gates filed a petition for divorce in King County, Washington, on Monday, asking a judge to dissolve the marriage based on the couple’s separation contract. No financial details were included in the publicly available documents.

The couple founded their philanthropic organization, the Bill and Melinda Gates Foundation, together in 2000. Since then, the foundation has spent $53.8 billion on a wide range of initiatives related to global health, poverty alleviation and more, according to its website.

Bill Gates is one of the richest people in the world. His net worth was $137 billion as of February, according to the Bloomberg Billionaires Index ranking.

Bill, 65, and Melinda, 56, began dating in 1987 after they met at Microsoft — which Bill Gates founded and was, at the time, running as CEO. She started as a product manager as the only woman in the first class of MBA graduates to join the company, and eventually rose through the ranks to become general manager of information products.