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Schedule Of Lease Cost (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 CAD ($)
Operating leases [Member]
Lease, cost
Operating lease cost, Operating leases	$ 151
Short-term and other (net of sublease rental income), Operating leases	76
Total lease cost	227
Finance leases [Member]
Lease, cost
Amortization of right of use assets	55
Interest on lease liabilities, Finance leases	40
Total lease cost	$ 95

X

- Definition

Amount of interest expense on finance lease liability.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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X

- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

+ References

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- Definition

Amount of lease cost recognized by lessee for lease contract.

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X

- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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X

- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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