How long did Regis Philibin host who wants to be a millionaire?

Regis Philbin hosted "Who Wants to Be a Millionaire" from its debut in 1999 until 2002, during which he became a beloved figure on the show. He returned for special episodes and various revivals, totaling over a decade of association with the franchise. His engaging style and charismatic presence contributed significantly to the show's popularity.