
	Liberty Mutual Group, more commonly known by the name of its primary&nbsp;line of business,&nbsp;Liberty Mutual Insurance, is an American diversified global insurer and the third-largest&nbsp;property&nbsp;and&nbsp;casualty&nbsp;insurer in the&nbsp;United States&nbsp;based on 2011 Property and Casualty direct written premium. It ranks 81st on the&nbsp;Fortune 100&nbsp;list of largest corporations in the United States based on 2012 revenue.
