INCOME TAXES - Deferred Taxes Temporary Difference (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Net operating losses:
Federal	$ 16	$ 22
State	120	130
Goodwill and intangible assets	6	9
Basis in DSH	814	834
Tax Credits	87	67
Other	108	53
Deferred tax assets, gross	1,151	1,115
Valuation allowance for deferred tax assets	(256)	(252)
Total deferred tax assets	895	863
Deferred Tax Liabilities:
Goodwill and intangible assets	(397)	(402)
Property & equipment, net	(165)	(221)
Other	(40)	(43)
Total deferred tax liabilities	(602)	(666)
Net deferred tax assets	$ 293	$ 197