Once the world's largest insurer, AIG is already a dramatically different company than it was when the government first bailed it out about eight months ago. AIG has sold about a dozen assets, announced plans to spin off at least two major operating units and given up an 80-percent ownership stake to the government in exchange for a package of loans worth more than $180 billion. In recent weeks, AIG has said it would spin off its Asian life insurance group known as American International Assurance Co., or AIA Group, and its property and casualty insurance business AIU Holdings.