Description of plan (Details) - EBP 001 - USD ($)	12 Months Ended
Dec. 31, 2025	Oct. 01, 2024
EBP, Description of Plan [Line Items]
Automatic eligible base pay percentage	10.00%
Contribution percentage increase	1.00%
Before tax participant contribution limit, as % of eligible compensation	60.00%
After tax contribution percentage	25.00%
Employer contribution, matching percentage	100.00%
Employer contribution, participation compensation matched percentage	5.00%
Employee contributions	$ 42,721,000
Permitted to invest in employer stock	20.00%
Maximum percentage of account value	20.00%
Rollover contributions permitted to invest in employer stock	20.00%
Shares received		1
Minimum borrowing, amount	$ 1,000
Plan participants maximum borrowing amount from account	$ 50,000
Plan participants maximum borrowing percent from account	50.00%
Service withdrawal holding period	24 months
Service withdrawal Participation period	60 months
Contribution vesting percentage	100.00%
South Bow
EBP, Description of Plan [Line Items]
Shares received		0.2
Discretionary profit sharing contribution
EBP, Description of Plan [Line Items]
Automatic eligible base pay percentage	5.00%
Profit sharing contribution percentage	7.00%
Contribution discretionary contribution	$ 20,237,846
Minimum
EBP, Description of Plan [Line Items]
Contribution percentage of bonus	1.00%
Participant loan interest rate	3.25%
Maximum
EBP, Description of Plan [Line Items]
Contribution percentage of bonus	100.00%
Note borrowing term	5 years
General loan, borrowing term	15 years
Participant loan interest rate	9.50%

EBP, Contribution Plan Contribution Percentage Of Bonus

No definition available.

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- Definition

EBP, Contribution Plan In Service Withdrawal Holding Period

+ References

No definition available.

+ Details

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- Definition

EBP, Contribution Plan In Service Withdrawal Participation Period

+ References

No definition available.

+ Details

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- Definition

EBP, Contribution Plan Maximum After Tax Contribution Percentage

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
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- Definition

EBP, Contribution Plan Maximum Percentage Of Contributions Permitted To Invest In Employer Stock

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

EBP, Contribution Plan Maximum Percentage Of Rollover Contributions Permitted To Invest In Employer Stock

+ References

No definition available.

+ Details

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- Definition

EBP, Contribution Plan Transfer Restrictions Maximum Percentage Of Account Value

+ References

No definition available.

+ Details

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- Definition

EBP, Employer Contribution, Profit Sharing Contribution Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	trp_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Company contribution and/ or investment earning percentage vesting to the participant in Company Matching Contributions, Fixed Rate Contributions, Discretionary Profit-Sharing Contributions, Qualified Non-Elective Contributions, and Disability Contributions, upon completion of minimum service period or attainment of maximum vesting age

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

EBP, Employer Discretionary Contribution

+ References

No definition available.

+ Details

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

- Definition

EBP, Note Receivable From Participant, General Loan, Borrowing Term

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

EBP, Note Receivable From Participant, Note Borrowing Term

+ References

No definition available.

+ Details

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- Definition

EBP, Participant Contribution, Automatic, Annual Increase Deferral Rate

+ References

No definition available.

+ Details

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- Definition

EBP, Spinoff Transaction, Shares Received

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Amount of increase in net asset available for benefit from cash contribution from employer of participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 962
-SubTopic 325
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478873/962-325-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477063/962-205-45-7

+ Details

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Balance Type:	debit
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478416/962-205-50-1

+ Details

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- Definition

Percentage of employer matching contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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- Definition

Percentage of participant compensation eligible for employer matching contribution for participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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- Definition

Amount of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

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Period Type:	instant

- Definition

Percentage of maximum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow to total participant account balance.

+ References

+ Details

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- Definition

Amount of minimum account balance that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) can borrow.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of maximum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation.

+ References

+ Details

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Namespace Prefix:	us-gaap-ebp_
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- Definition

Interest rate on participant loan in schedule of asset held for investment of employee stock purchase, saving, or similar plan (employee benefit plan (EBP)).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Employee Retirement Income Security Act of 1974
-Number 2520
-Section 103
-Subsection 10
-Paragraph b
-Subparagraph (1)(i)(D)
-Publisher DOL-EBSA

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 962
-SubTopic 205
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6A-05(a)(Schedule I))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477804/962-205-S99-1

+ Details

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- Details

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- Details

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