COMMITMENTS AND CONTINGENCIES - Offshore Wind Contingent Liability Narrative (Details) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Sep. 30, 2024	Jul. 09, 2024	Sep. 30, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Feb. 13, 2024
Loss Contingencies [Line Items]
Proceeds from Sales of Offshore Wind Investments				$ 0	$ 862,713	$ 1,090,662
Equity method investment, liability obligations					365,000
Contingent liability				448,200	365,000
Losses on Offshore Wind				$ 284,000	464,019	2,167,000
Equity method investment, other than temporary impairment, after tax						$ (1,950,000)
Sunrise Wind, LLC
Loss Contingencies [Line Items]
Ownership interest (in percent)		50.00%
Proceeds from Sales of Offshore Wind Investments		$ 118,000
Sunrise Wind, LLC | Orsted
Loss Contingencies [Line Items]
Equity method investment, remaining purchase price paid		$ 34,000
South Fork Wind And Revolution Wind
Loss Contingencies [Line Items]
Ownership interest (in percent)			50.00%				50.00%
Proceeds from Sales of Offshore Wind Investments			$ 745,000
Cost sharing agreement, threshold amount	$ 240,000
Effective income tax rate reconciliation, change in enacted tax rate, amount					60,000
Equity method investment, pre tax charge			$ 284,000
Losses on Offshore Wind					464,000
Equity method investment, other than temporary impairment, after tax					$ (524,000)
Revolution Wind
Loss Contingencies [Line Items]
Federal investment tax credits (percent)				40.00%
Commercial operation, term				4 years
Orsted | Sunrise Wind, LLC
Loss Contingencies [Line Items]
Ownership interest (in percent)		50.00%
Proceeds from Sales of Offshore Wind Investments		$ 152,000