CNA Financial Corporation (90 percent owned) is one of the largest commercial property-casualty insurance companies in the United States. (NYSE: CNA) www.cna.com

Diamond Offshore Drilling, Inc. (50.4 percent owned) is one of the world's largest offshore drilling companies, offering comprehensive drilling services to the energy industry around the world. The company owns and operates 46 offshore drilling rigs. (NYSE: DO) www.diamondoffshore.com

HighMount Exploration & Production LLC (100 percent owned) is engaged in exploration and production of natural gas. HighMount's primary assets are located in the Permian Basin in Texas. www.highmountep.com

Boardwalk Pipeline Partners, LP (66 percent owned) is engaged in the operation of interstate natural gas pipeline systems. (NYSE: BWP) www.bwpmlp.com

Loews Hotels (100 percent owned) is one of the country's top luxury lodging companies. It owns and operates hotels and resorts in the United States and Canada. www.loewshotels.com