The Enron scandal involved the bankruptcy of Enron Corporation, which was at the time the seventh largest energy company in the United States. Enron failed due to undisclosed investments and losses that put the company into debt of over $60 billion. This was considered one of the biggest accounting scandals in history and resulted in the dissolution of Arthur Andersen, which was one of the five largest audit and accountancy partnerships in the world. The collapse affected thousands of employees and shareholders and shook investor confidence in the energy market and corporations.