In the wake of Apple's (AAPL) successful earnings results, the company took advantage of low interest rates to issue $6.5B worth of new debt. We were a bit surprised that the offering would include floating-rate bonds as well as fixed-rate bonds considering that interest rates are already at historical lows. Apple currently has $32.5B outstanding in long-term debt and $3.9B outstanding in short-term commercial paper. Apple also has $178B in cash and liquid assets; however,