Form Type:  6-K
Filing Date:  4/15/2019 
CIK:  0001232384 
Address:  450 - 1ST STREET S.W. 
City, State, Zip:  CALGARY ALBERTA,  T2P 5H1 
Telephone:  (403) 920-2000 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
0.14 (0.28%)  
Trade Time: 
Jun 26  
Market Cap: 
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© 2019  
Description of Business
General development of the business We operate in three core businesses - Natural Gas Pipelines, Liquids Pipelines and Energy. As a result of our acquisition of Columbia Pipeline Group, Inc. (Columbia) on July 1, 2016 and the sale of the U.S. Northeast power business, we determined that a change in our operating segments was appropriate. Accordingly, we consider ourselves to be operating in the following five segments: Canadian Natural Gas Pipelines, U.S. Natural Gas Pipelines, Mexico Natural Gas Pipelines, Liquids Pipelines and Energy. This provides information that is aligned with how management decisions about our business are made and how performance of our business is assessed. We also have a non-operational Corporate segment consisting of corporate and administrative functions that provide governance and other support to our operational business segments.
Register and access this filing in:     
  FORM 6-K
  EXHIBIT 99.1