Consolidated Statements of Operations (Unaudited) - NPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating revenue	$ 6,346	$ 6,030
Operating expenses:
Cost of sales	1,955	1,460
Total operating expenses	5,679	4,794
Operating income	667	1,236
Other income (expense):
Interest expense	(586)	(532)
Capitalized interest	24	17
Allowance for equity funds	49	38
Interest and dividend income	86	23
Other, net	40	5
Total other income (expense)	312	(1,706)
Income (loss) before income tax expense (benefit) and equity income (loss)	979	(470)
Income tax expense (benefit)	(162)	(507)
Net income (loss) attributable to parent	989	(129)
NPC
Operating revenue	599	415
Operating expenses:
Cost of sales	384	212
Operations and maintenance	73	65
Depreciation and amortization	106	103
Property and other taxes	14	13
Total operating expenses	577	393
Operating income	22	22
Other income (expense):
Interest expense	(49)	(38)
Capitalized interest	2	1
Allowance for equity funds	4	3
Interest and dividend income	22	9
Other, net	4	1
Total other income (expense)	(17)	(24)
Income (loss) before income tax expense (benefit) and equity income (loss)	5	(2)
Income tax expense (benefit)	1	0
Net income (loss) attributable to parent	$ 4	$ (2)