In an economy where many companies are splitting up, including Marathon Oil, ConocoPhillips ( NYS: COP ), and Kraft Foods, this break-up doesn't come as a surprise. ConocoPhillips split into two publicly traded companies in July and plans to spin off its refining and marketing business by early 2012. Since Tyco's three units barely have any common customer and their end markets are different, I consider this split to be a positive move. It will help them serve their distinct customers better and provide individual scope for growth and acquisition.