(CNN) He launched a worldwide restaurant empire whose "Pizza, pizza" catchphrase became ubiquitous. Mike Ilitch, Little Caesars founder and owner of the Detroit Tigers and Detroit Red Wings, died Friday at a hospital in the Motor City. He was 87. "My father was a once-in-a-generation entrepreneur, visionary and leader, setting the tone for our organization and our family. He made such a positive impact in the world of sports, in business and in the community," said Ilitch's son Christopher, who is president and CEO of Ilitch Holdings, the umbrella company for Ilitch's business empire. Ilitch's cause of death has not been released.