108. Marian Ilitch
Ilitch and her family led the construction of Little Caesars Arena, which opened in September and is home to their Detroit Red Wings NHL team. The arena anchors the $1 billion-plus District Detroit project, which will include a new business school named for Marian’s late husband, Mike, who died in February, and a new headquarters for Little Caesars Pizza, which they cofounded and which sells more than $4 billion worth of pizzas worldwide. This year her assets do not include the $1.2 billion Detroit Tigers baseball team, which is held in an Ilitch family trust.