Represents the amount of net realized gains (losses) related to the interest component of derivative instrument.

No definition available.

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Namespace Prefix:	trp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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 https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
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- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
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Balance Type:
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- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Derivatives Designated as a Net Investment Hedge (Details) $ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022 CAD ($)	Dec. 31, 2021 CAD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Derivative [Line Items]
Fair Value	$ (317)	$ (51)
Designated as a net investment hedge
Derivative [Line Items]
Fair Value	(27)	19
Designated as a net investment hedge \| US$ denominated
Derivative [Line Items]
Notional Amount			$ 3,900	$ 4,200
U.S. dollar foreign exchange options (maturing 2023 to 2024) \| Designated as a net investment hedge
Derivative [Line Items]
Fair Value	(22)	(4)
U.S. dollar foreign exchange options (maturing 2023 to 2024) \| Designated as a net investment hedge \| US$ denominated
Derivative [Line Items]
Notional Amount			3,600	3,800
U.S. dollar cross-currency interest rate swaps (maturing 2023 to 2025) \| Designated as a net investment hedge
Derivative [Line Items]
Fair Value	(5)	23
U.S. dollar cross-currency interest rate swaps (maturing 2023 to 2025) \| Designated as a net investment hedge \| US$ denominated
Derivative [Line Items]
Notional Amount			$ 300	$ 400
Net realized gains related to the interest component	$ 1	$ 1