text: **Publicly Traded Companies**
  We hold interests in a number of publicly traded companies. This year 
  we recorded unrealized gains of $186 million (2012 – $225 million of 
  unrealized losses) with a corresponding increase in other comprehensive 
  income. 
  
  The recoverable amounts of these cash generating units were lower in 
  2012 than 2011 mainly due to the decline in advertising revenue in 
  certain markets. 