INCOME TAXES - Income Tax Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Federal income tax at statutory rate	$ (1,140)	$ (1,417)	$ (984)
State income taxes	(230)	(267)	(236)
Permanent items	58	75	8
Nondeductible charitable contributions	0	0	172
Nondeductible loss on convertible debt	0	0	118
Tax credits	(202)	(264)	(63)
Other	(26)	10	(3)
Valuation allowance	1,541	1,867	988
Provision for income taxes	$ 1	$ 4	$ 0

Effective Income Tax Rate Reconciliation, Nondeductible Expense, Convertible Debt, Amount

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Effective Income Tax Rate Reconciliation, Permanent Items, Amount

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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