text: 1 Excludes acquisition transaction costs. 
  
  If all of the above acquisitions had occurred on January 1, 2013, we estimate our incremental revenue from these acquisitions would have been 
  $172 million and incremental operating income would have been $3 million for 2013. 
  
  The pro forma disclosures are based on estimates and assumptions we believe are reasonable. The information provided is not necessarily an 
  indication of what our consolidated financial results will be in the future. 
  
  **2012 Acquisitions**
  There were no individually material business combinations or divestitures in 2012. 
  
  NOTE 8: RESTRUCTURING, ACQUISITION AND OTHER EXPENSES 
  
  In 2013, we incurred: 
  (cid:129) $53 million of restructuring expenses related to severances resulting from the targeted restructuring of our employee base and to improve our 
  cost structure (2012 – $89 million), and 
  (cid:129) $32 million of acquisition transaction costs and other costs (2012 – $3 million). 
  
  The table below shows the additions to liabilities related to the restructuring, acquisition and other costs and payments made against the liabilities 
  in 2013. 