Unfortunately, most companies don't seem to publish it, but you can find out through HR. I worked at a company (now Lonza), and they had 100% tuition reimbursement with no caps. I did my entire Master's degree at their expense (ECE), and I am familiar with one full-time warehouse employee who started moving boxes and ended up leaving after he had enough education to become an actuary! Of course, your reimbursement was contingent on maintaining at least a B in each course, which I think is completely fair.
Yet, for some reason, this company has never made it in the news for its tuition programs, but Amazon offers basically nothing in comparison and somehow they are worth mentioning.