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Cash Flow Information - Schedule of Cash Flows from Operating Activities Determined by Indirect Method (Detail) - CAD CAD in Millions | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES |  |
Net income for the year | CAD 97.0 | CAD 130.5
Add (deduct) items not affecting cash: |  |
Depreciation of property and equipment | 54.6 | 51.2
Amortization of intangible assets | 80.2 | 75.7
Deferred income taxes | (26.4) | 12.6
Loss (gain) on sale of property and equipment | 0.2 | 1.5
Realized gain on available-for-sale equity securities | (9.6) |
Gain on sale of a subsidiary | (54.6) |
Share-based compensation | 9.5 | 8.9
Provision for self-insured liabilities and claims | 26.2 | 12.8
Share of income from joint ventures and associates | (2.6) | (2.4)
Other non-cash items | 5.0 | (2.6)
Adjustment For Reconcile Profit and Loss | 179.5 | 288.2
Trade and other receivables | 70.7 | 32.8
Unbilled revenue | 58.9 | 1.9
Prepaid expenses | 15.9 | (1.5)
Income taxes recoverable | 143.7 | (4.8)
Trade and other payables | (172.8) | 1.7
Deferred revenue | (32.2) | (32.6)
Cash flows from used in operations | 84.2 | (2.5)
Cash flows from operating activities | CAD 263.7 | CAD 285.7

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