International Dairy Queen Inc., (IDQ), based in Minneapolis, Minnesota, is the parent company of American Dairy Queen Corporation and Dairy Queen Canada, Inc. Through its subsidiaries, IDQ develops, licenses and services a system of more than 7,000 locations in the United States, Canada and more than 20 other countries. IDQ is a subsidiary of Berkshire Hathaway Inc., which is led by Warren Buffett, the legendary investor and CEO of Berkshire.