By Jeff Labrecque
Updated June 29, 2011 at 01:03 PM EDT

Mel Gibson and his wife of 31 years have officially finalized their divorce, according to Reuters. Robyn Gibson had filed for divorce in 2009, three years after the pair separated. Details of the agreement were not released, but Gibson was once thought to be worth approximately $900 million. The couple has seven children together, and Gibson has a 20-month-old daughter with former girlfriend Oksana Grigorieva.