Real Madrid have announced the signing of Brazil international Kaka from AC Milan. Madrid gave no financial details but reports late on Monday said the Spanish club will pay Milan €65 million ($92 million) for the attacking midfielder, making it one of the richest deals in football history. The largest previous transfer was set by Zinedine Zidane when he joined Madrid from Juventus for $65 million in 2001. Milan also confirmed Kaka's transfer to Madrid on its Web site. Kaka, who passed a medical in the northeastern Brazilian city of Recife earlier Monday, has signed a six-year contract.