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COMMITMENTS AND CONTINGENCIES (Details) $ in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2024 CAD ($)	Dec. 31, 2023 USD ($)
Loss Contingencies [Line Items]
Reduction to contingent liability accrual and decrease to operation and maintenance expense	$ 9
Accrued contingent liabilities	4		$ 13
Revolving Term Credit Facility | Vector
Loss Contingencies [Line Items]
Financing receivables		$ 70
Maximum potential payout	51
Performance surety bonds
Loss Contingencies [Line Items]
Maximum potential indemnification	$ 31

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Total costs accrued as of the balance sheet date for environmental loss contingencies.

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