Apple just took out a $6.5 billion loan even though it's sitting on $178 billion in cash

Apple sold $6.5 billion in bonds on Monday, according to Bloomberg. That's the same Apple that last week announced a record-breaking $18 billion profit over the holiday quarter. It's reasonable to ask: Why would Apple — a company with $178 billion in cash — need a loan? In short: taxes. Most of Apple's …