Consolidated Statements of Operations (Unaudited) - NPC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating revenue	$ 6,064	$ 4,612	$ 12,145	$ 9,139
Operating expenses:
Cost of sales	1,110	888	2,679	1,926
Total operating expenses	4,856	3,676	9,604	7,284
Operating income	1,208	936	2,541	1,855
Other income (expense):
Interest expense	(532)	(503)	(1,062)	(986)
Allowance for borrowed funds	14	19	28	36
Allowance for equity funds	30	38	56	72
Other, net	48	52	56	25
Total other income (expense)	1,552	209	(27)	(203)
Income (loss) before income tax expense (benefit) and equity income (loss)	2,760	1,145	2,514	1,652
Income tax expense (benefit)	327	(7)	(208)	(191)
Net income (loss) attributable to parent	2,281	1,116	2,285	1,786
NPC
Operating revenue	559	509	929	898
Operating expenses:
Cost of sales	252	197	417	367
Operations and maintenance	77	74	140	156
Depreciation and amortization	100	91	201	181
Property and other taxes	12	11	24	23
Total operating expenses	441	373	782	727
Operating income	118	136	147	171
Other income (expense):
Interest expense	(39)	(40)	(77)	(82)
Allowance for borrowed funds	1	1	2	2
Allowance for equity funds	2	2	3	4
Other, net	9	7	18	6
Total other income (expense)	(27)	(30)	(54)	(70)
Income (loss) before income tax expense (benefit) and equity income (loss)	91	106	93	101
Income tax expense (benefit)	9	23	9	22
Net income (loss) attributable to parent	$ 82	$ 83	$ 84	$ 79