According to Freddie Mac, the average American homeowner can get a 30-year mortgage today for as little as 3.5%. That sounds pretty good -- but right now corporate America is borrowing money for less than half that rate.

IBM (NYSE:IBM) just snagged $2.25 billion worth of loans for aggregate interest of less than 1.5% total. Apple (NASDAQ:AAPL), Texas Instruments, Unilever, and Walt Disney are all loading up on debt as well. But why?

To get the lowdown on low rates, why companies like them, and the risks of taking advantage of them, just watch the video below.