Keep in mind as you read this Bloomberg piece that the global GDP is about $60 trillion:

The amount of debt globally has soared more than 40 percent to $100 trillion since the first signs of the financial crisis as governments borrowed to pull their economies out of recession and companies took advantage of record low interest rates, according to the Bank for International Settlements.

The $30 trillion increase from $70 trillion between mid-2007 and mid-2013 compares with a $3.86 trillion decline in the value of equities to $53.8 trillion in the same period, according to data compiled by Bloomberg. The jump in debt as measured by the Basel, Switzerland-based BIS in its quarterly review is almost twice the U.S.’s gross domestic product.

That's a part of the story. Here is the other part:
Marketable U.S. government debt outstanding has surged to a record $12 trillion, up from $4.5 trillion at the end of 2007, according to U.S. Treasury data compiled by Bloomberg. Corporate bond sales globally jumped during the period, with issuance totaling more than $21 trillion, Bloomberg data show.

Concerned that high debt loads would cause international investors to avoid their markets, many nations resorted to austerity measures of reduced spending and increased taxes, reining in their economies in the process as they tried to restore the fiscal order they abandoned to fight the worldwide recession.

The crazy thing is this: Poor countries have resorted to austerity to attract investors, but money still refuses to come into their economies. What is happening instead is that money is going out. As Costas Lapavitsas points out in his book Profiting Without Producing: How Finance Exploits Us, black Africa not only holds about $100 billion in US debt but is buying more and more of this debt. Most people do not know this, but that money helps to support American consumption.