Lucio is delighted to have completed his move to Inter Milan.
The former Bayern Munich defender said: "I am very proud to be part of a club and a team like Inter. I am here to give the best of me and to continue winning.
"It's true, within a couple of days, in Boston, I will meet two of my friends and team-mates from the Brazil squad, Julio Cesar and Maicon.
"I know a lot of Inter's other champions, who I have often met as opponents in recent years."