Business Acquisitions - Summary of Notes Payable in Business Combination (Detail) $ in Millions	12 Months Ended
Dec. 31, 2018 CAD ($)
Disclosure of Notes Payable in Business Combination [abstract]
Balance, beginning of the year	$ 58.8
Additions for acquisitions in the year	55.6
Other adjustments	(0.2)
Payments	(42.0)
Interest	0.9
Impact of foreign exchange	3.0
Total notes payable	$ 76.1

Additions for acquisitions on notes payable recognised in business combination.

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Disclosure of notes payable in business combination.

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Increase decrease through change in foreign exchange on notes payable recognised in business combination.

No definition available.

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Interest on notes payable recognised in business combination.

No definition available.

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Notes payable recognised in business combination.

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Other adjustments on notes payable recognised in business combination.

No definition available.

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Payments of notes payable recognised in business combination.

No definition available.

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