they have to report revenue and expenses due to Title IX. It's aggregated, so you can't see what individual coach's salaries are, but it shows revenue and expenses for the athletic department. I've posted links to it multiple times. BYU is starting off well ahead of Utah (by about $10 million per year in athletic revenue). By the time BYU gets its ESPN money and its WCC basketball money and is starting to monetize BYUtv, BYU will probably still be ahead of Utah. At the very least it will be close.
Search my old posts for "revenue" and you should find the links.