CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
OPERATING REVENUE
Total operating revenue	$ 1,541	$ 1,656
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	387	408
Selling, general and administrative	128	109
Operating expenses—affiliates	191	176
Depreciation and amortization	197	210
Total operating expenses	903	903
OPERATING INCOME	638	753
OTHER (EXPENSE) INCOME
Interest expense	(27)	(27)
Interest income - affiliate, net	1
Interest expense - affiliate, net		(24)
Other income, net	1	5
Total other expense, net	(25)	(46)
INCOME BEFORE INCOME TAX EXPENSE	613	707
Income tax expense	159	179
NET INCOME	454	528
Non-affiliate services
OPERATING REVENUE
Total operating revenue	981	1,075
Affiliate services
OPERATING REVENUE
Total operating revenue	$ 560	$ 581