The Federal Reserve revealed Wednesday which banks had received the trillions of dollars in loans and other aid it provided during the 2007-2009 financial crisis. Many of the emergency lending programs it set up enabled banks to repeatedly borrow large sums. When added up, the numbers are eye-popping: the European Central Bank, for example, racked up $8 trillion in borrowing under an arrangement it had with the Fed. All those loans were repaid, as was the borrowing by the top 10 private banks, below: