XML 85 R150.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Revenue - Additional Information (Detail) - CAD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Jan. 01, 2018
Jan. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Disclosure of performance obligations [abstract]        
Deferred revenue $ 196.4   $ 174.4  
Explanation of how timing of satisfaction of performance obligations relates to typical timing of payment   Revenue recognized in 2019 from performance obligations satisfied (or partially satisfied) in prior years was less than 5% (2018 – 5%) of the Company's gross revenue from continuing operations.    
Revenue from performance obligations unsatisfied (or partially unsatisfied)     $ 4,257.0 $ 4,179.0
Expected revenue recognition as contracts     77.00% 77.00%
Explanation of expected revenue recognition as contracts       The Company expects to recognize approximately 77% (2018 – 77%) of this revenue as contracts are completed over the next 18 months (2018 – 18 months) with the remainder recognized thereafter.