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Cash and Cash Equivalents (Tables)
12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Summary of Cash and Cash Equivalents
For the purpose of the consolidated statements of cash flows, cash and cash equivalents consist of the following:

 

     

          December 31

2017

$

    

          December 31

2016

$

 

Cash

Unrestricted investments

    

234.7

4.8

 

 

    

207.1

3.8

 

 

Cash and cash equivalents

     239.5        210.9