Consolidated Statements of Operations (Unaudited) - NPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating revenue	$ 6,030	$ 6,081
Operating expenses:
Cost of sales	1,460	1,569
Total operating expenses	4,794	4,748
Operating income	1,236	1,333
Other income (expense):
Interest expense	(532)	(530)
Allowance for borrowed funds	17	14
Allowance for equity funds	38	26
Interest and dividend income	23	21
Other, net	5	8
Total other income (expense)	(1,706)	(1,579)
Net income (loss) attributable to parent	(129)	4
NPC
Operating revenue	415	370
Operating expenses:
Cost of sales	212	165
Operations and maintenance	65	63
Depreciation and amortization	103	101
Property and other taxes	13	12
Total operating expenses	393	341
Operating income	22	29
Other income (expense):
Interest expense	(38)	(38)
Allowance for borrowed funds	1	1
Allowance for equity funds	3	1
Interest and dividend income	9	5
Other, net	1	4
Total other income (expense)	(24)	(27)
Net income (loss) attributable to parent	$ (2)	$ 2