text: *Repayment of Senior Notes and Related Derivative Settlements*
  In June 2013, when we repaid or bought our US $350 million 
  ($356 million) senior notes due 2013, the associated Debt Derivatives 
  were settled at maturity, resulting in total payments of approximately 
  $104 million. The settlements of these Debt Derivatives did not impact 
  net income for the year ended December 31, 2013. 
  
  **Fair Values**
  The carrying value of cash and cash equivalents, accounts receivable, 
  short-term borrowings, and accounts payable and accrued liabilities 
  approximate their fair values because of the short-term nature of these 
  financial instruments. 
  
  At December 31, 2013 we have US $6.4 billion (2012 – US $4.2 billion) 
  of US Dollar denominated senior notes and debentures, all of which 
  have been hedged using Debt Derivatives (2012 – 91.7%). 
  
  We determine the fair value of each of our publicly traded investments 
  using quoted market values. We determine the fair value of our private 
  investments by using market values from similar transactions or well 
  established market, asset based or projected income valuation 
  techniques. These are applied appropriately to each investment 
  depending on its future operating and profitability prospects. 