(Bloomberg) -- Progressive Corp. Chairman Peter B. Lewis, the billionaire who turned a company founded by his father into one of the biggest U.S. auto insurers and later pushed to legalize marijuana, has died. He was 80.

Lewis died Nov. 23 at his home in Coconut Grove, Florida, after suffering a heart attack, said his philanthropic adviser, Jennifer Frutchy. Lewis, Progressive’s chief executive officer for 35 years, built the firm on transparency, reporting results monthly instead of quarterly. He also made it the first insurer to publicly compare its rates to those of competitors and ask for consumer input on pricing, said CEO Glenn Renwick, who will take on the additional role of Chairman.

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