Consolidated Statements of Operations (Unaudited) - SPPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Total operating revenue	$ 6,111	$ 6,346
Cost of sales	1,670	1,955
Total operating expenses	5,216	5,679
Operating income	895	667
Interest expense	(691)	(586)
Allowance for equity funds	83	49
Interest and dividend income	116	86
Other, net	31	40
Total other income (expense)	(538)	312
Income before income tax expense (benefit) and equity income (loss)	357	979
Income tax expense (benefit)	(371)	(162)
Net income attributable to parent	653	989
SPPC
Total operating revenue	346	400
Operations and maintenance	56	56
Depreciation and amortization	47	46
Property and other taxes	6	7
Total operating expenses	327	365
Operating income	19	35
Interest expense	(20)	(16)
Capitalized interest	1	2
Allowance for equity funds	4	2
Interest and dividend income	4	7
Other, net	3	1
Total other income (expense)	(8)	(4)
Income before income tax expense (benefit) and equity income (loss)	11	31
Income tax expense (benefit)	1	4
Net income attributable to parent	10	27
SPPC | Regulated electric
Total operating revenue	260	304
Cost of sales	151	181
SPPC | Regulated natural gas
Total operating revenue	86	96
Cost of sales	$ 67	$ 75