Debt and finance lease liabilities, excluding Commercial paper and Term Loans

No definition available.

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- Definition

Net investment hedge, Gain (loss) on designated debt, Net recognized in OCI

+ References

No definition available.

+ Details

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- Definition

Net fair value of all derivative instruments designated as cash flow hedging instruments, which is ordinarily reflected within other comprehensive income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

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- Definition

The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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-Publisher FASB
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-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(h))
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

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Financial Instruments - Narrative (Details) $ in Millions, $ in Millions		3 Months Ended		4 Months Ended	9 Months Ended
	Sep. 30, 2021 CAD ($)	Sep. 30, 2021 CAD ($)	Sep. 30, 2020 CAD ($)	Sep. 30, 2021 CAD ($)	Sep. 30, 2021 CAD ($)	Sep. 30, 2020 CAD ($)	Sep. 30, 2021 USD ($)	May 21, 2021 CAD ($)	Dec. 31, 2020 CAD ($)
Schedule of Investments [Line Items]
Debt and finance lease liabilities, Carrying value	$ 8,611	$ 8,611		$ 8,611	$ 8,611				$ 8,951
Debt and finance lease liabilities, Fair value	10,533	10,533		10,533	10,533				$ 11,597
FX Forward Contracts
Schedule of Investments [Line Items]
Derivative, Notional amount							$ 1,000
Unrealized gain on derivatives		30
Gain on Sale of Derivatives					13
Forward Starting Swaps
Schedule of Investments [Line Items]
Derivative, Notional amount							$ 2,400
(Loss) gain on cash flow hedges		25			(195)
Forward Starting Swaps \| Accounts Payable and Accrued Liabilities
Schedule of Investments [Line Items]
Cash flow hedge, Fair Value	(195)	(195)		(195)	(195)
Forward Starting Swaps \| Accumulated other comprehensive loss
Schedule of Investments [Line Items]
Cash Flow Hedges at Fair Value, Net								$ 73
Forward Starting Swaps \| Other Comprehensive Income
Schedule of Investments [Line Items]
(Loss) gain on cash flow hedges	129
Forward Starting Swaps \| Other expense (income)
Schedule of Investments [Line Items]
(Loss) gain on cash flow hedges		(104)		(251)
Bond Locks
Schedule of Investments [Line Items]
Derivative, Notional amount	600	600		600	600
(Loss) gain on cash flow hedges		3			(2)
Bond Locks \| Accounts Payable and Accrued Liabilities
Schedule of Investments [Line Items]
Cash flow hedge, Fair Value	(2)	(2)		(2)	(2)
Bond Locks \| Accumulated other comprehensive loss
Schedule of Investments [Line Items]
Cash Flow Hedges at Fair Value, Net								$ 2
Bond Locks \| Other Comprehensive Income
Schedule of Investments [Line Items]
(Loss) gain on cash flow hedges	$ 10
Bond Locks \| Other expense (income)
Schedule of Investments [Line Items]
(Loss) gain on cash flow hedges		(7)		$ (10)
Net Investment Hedge
Schedule of Investments [Line Items]
Gain (loss) on net investment hedge		$ (168)	$ 135		$ (6)	$ (156)