PROVISIONS (Details) - CAD CAD in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Reconciliation of changes in other provisions [abstract]
December 31, 2016	CAD 167
Additions	1
Adjustments to existing provisions	4
Reversals	(20)
Amounts used	(113)
December 31, 2017	39	CAD 167
Current	4	134
Long-term	35	33
(Recovery) loss on wind-down of shomi	CAD (20)	140
Expected settlement term of legal claims	5 years
Decommissioning Liabilities
Reconciliation of changes in other provisions [abstract]
December 31, 2016	CAD 35
Additions	0
Adjustments to existing provisions	4
Reversals	0
Amounts used	(4)
December 31, 2017	35	35
Current	2
Long-term	33
shomi
Reconciliation of changes in other provisions [abstract]
December 31, 2016	112
Additions	0
Adjustments to existing provisions	0
Reversals	(20)
Amounts used	(92)
December 31, 2017	0	112
Current	0
Long-term	0
Other
Reconciliation of changes in other provisions [abstract]
December 31, 2016	20
Additions	1
Adjustments to existing provisions	0
Reversals	0
Amounts used	(17)
December 31, 2017	4	CAD 20
Current	2
Long-term	CAD 2

The amount of additional other provisions made. [Refer: Other provisions]

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Adjustments for gain (loss) on disposals investments in subsidiaries, joint ventures and associates to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries, joint ventures and associates; Profit (loss)]

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The increase in existing other provisions. [Refer: Other provisions]

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The amount of non-current provisions other than provisions for employee benefits. [Refer: Non-current provisions]

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The amount of provisions other than provisions for employee benefits. [Refer: Provisions]

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The amount used (ie incurrent and charged against the provision) for other provisions. [Refer: Other provisions]

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The amount reversed for unused other provisions. [Refer: Other provisions]

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Expected Settlement Term of Legal Claims

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