The document discusses LIBOR (London Interbank Offered Rate), which is the average interest rate that leading banks in London charge when lending to other banks. It provides background information on LIBOR, including that it was established in 1986, has 15 maturity periods ranging from overnight to 12 months, and rates for 10 major currencies. The document then discusses how LIBOR manipulation by banks like Barclays impacted global financial markets and consumers through its effect on loans, mortgages, savings, and derivatives.