CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
OPERATING REVENUE
Total operating revenue	$ 1,656	$ 1,792
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	408	439
Selling, general and administrative	109	107
Operating expenses—affiliates	176	194
Depreciation and amortization	210	317
Total operating expenses	903	1,057
OPERATING INCOME	753	735
OTHER (EXPENSE) INCOME
Interest expense	(27)	(48)
Interest expense—affiliate, net	(24)	(31)
Other income (expense), net	5	(6)
Total other expense, net	(46)	(85)
INCOME BEFORE INCOME TAX EXPENSE	707	650
Income tax expense	179	168
NET INCOME	528	482
Non-affiliate services
OPERATING REVENUE
Total operating revenue	1,075	1,170
Affiliate Services [Member]
OPERATING REVENUE
Total operating revenue	$ 581	$ 622