TAXES - Accumulated Deferred Income Taxes (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Property basis differences	$ 5,528	$ 5,670
Pension and OPEB	(496)	(570)
AROs	(22)	(21)
Regulatory asset/liability	432	322
Deferred compensation	(149)	(155)
Deferred gain on 19.9% FET minority interest sale	752	0
Loss carryforwards and tax credits	(2,073)	(2,040)
Valuation reserve	440	484	$ 496	$ 441
All other	(210)	(253)
Net deferred income tax liability	$ 4,202	$ 3,437

Deferred Tax Assets Liabilities, Net, Asset Retirement Obligation Liability

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Deferred Tax Assets Liabilities Net Non current Loss carry forward valuation reserve.

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Deferred Tax Assets Liabilities Net Non current Loss carry forwards and Tax Credits

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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