Ford Motor Company and Coca-Cola were two of the first sponsors of American Idol in its first season. The sponsorship deal cost around $10 million in season one, rising to $35 million by season 7, and between $50 to $60 million in season 10. The third major sponsor AT&T Wireless joined in the second season but ended after season 12, and Coca-Cola officially ended its sponsorship after season 13 amidst the declining ratings of Idol in the mid-2010s. iTunes sponsored the show since season seven.
In which season did Coca-Cola become a sponsor of American Idol? 
season one
The sponsorship deal cost around $10 million in season one, rising to $35 million by season 7, and between $50 to $60 million in season 10.
The sponsorship deal cost around ten dollars million in season one, rising to thirty-five dollars million by season seven, and between fifty dollars to sixty dollars million in season ten.
In which season did Coca-Cola become a sponsor of American Idol? 