INVESTMENTS - Investment Types (Details) - CAD CAD in Millions	Dec. 31, 2017	Dec. 31, 2016
Interests in Other Entities [Abstract]
Investments in publicly-traded companies	CAD 1,465	CAD 1,047
Investments in Private companies	167	169
Investments, available-for-sale	1,632	1,216
Investments, associates and joint ventures	929	958
Total investments	CAD 2,561	CAD 2,174

The amount of investments in subsidiaries, joint ventures and associates in an entity's separate financial statements. [Refer: Associates [member]; Joint ventures [member]; Subsidiaries [member]; Investments in subsidiaries]

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The amount of non-current financial assets available-for-sale. [Refer: Financial assets available-for-sale; Non-current financial assets]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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