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Interests in Structured Entities - Schedule Investment and Maximum Exposure to Loss Related to Significant Unconsolidated Structured Entities (Detail) - Unconsolidated structured entities [Member] - Investment SEs [Member] - CAD CAD in Millions	Dec. 31, 2017	Dec. 31, 2016
Disclosure of unconsolidated structured entities [Line Items]
Company's investment	CAD 4,370	CAD 4,432
Company's maximum exposure to loss	4,420	4,445
Leveraged leases [Member]
Disclosure of unconsolidated structured entities [Line Items]
Company's investment	3,273	3,369
Company's maximum exposure to loss	3,273	3,369
Timberland companies [Member]
Disclosure of unconsolidated structured entities [Line Items]
Company's investment	736	736
Company's maximum exposure to loss	786	749
Real estate companies [Member]
Disclosure of unconsolidated structured entities [Line Items]
Company's investment	361	327
Company's maximum exposure to loss	CAD 361	CAD 327

X

- Definition

The amount of assets recognised in the entity's financial statements relating to its interests in structured entities. [Refer: Assets; Unconsolidated structured entities [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph 29
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_29_a&doctype=Standard
-URIDate 2017-03-09

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- Definition

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+ References

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- Definition

The amount that best represents the entity's maximum exposure to loss from its interests in structured entities. [Refer: Unconsolidated structured entities [member]]

+ References

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-Number 12
-IssueDate 2017-01-01
-Paragraph 29
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-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_29_c&doctype=Standard
-URIDate 2017-03-09

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