PENSION AND OTHER POSTRETIREMENT BENEFITS - Assumed Health Care Cost Trend Rates (Details)	Dec. 31, 2023	Dec. 31, 2022
Canada
MEDICAL COST TRENDS (as percent)
Health care cost trend rate assumed for next year	4.00%	4.00%
Rate to which the cost trend is assumed to decline (ultimate trend rate)	4.00%	4.00%
US
MEDICAL COST TRENDS (as percent)
Health care cost trend rate assumed for next year	4.70%	4.70%
Rate to which the cost trend is assumed to decline (ultimate trend rate)	3.30%	3.30%
US \| Enbridge Employee Services, Inc. Health Reimbursement Account Plan
MEDICAL COST TRENDS (as percent)
Increase in defined benefit plan	5.00%

Periodic Increase In Defined Benefit Plan Ultimate Health Care Cost Trend Rate 1

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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

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Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (l)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480506/715-20-50-1

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Ultimate trend rate for health care cost for defined benefit postretirement plan.

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