Condensed Consolidated Statements of Comprehensive Income (Unaudited) - SPC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Net income	$ 1,707	$ 1,535	$ 3,830	$ 3,794
Qualifying hedges:
Changes in fair value, net of tax	(13)	(2)	36	(5)
Reclassification adjustment for amounts included in net income, net of tax	5	(8)	(38)	39
Pension and other postretirement benefit plans:
Benefit plan net gain (loss), net of tax	0	0	1	3
Total other comprehensive income (loss)	(8)	(9)	(1)	38
Comprehensive Income	1,699	1,526	3,829	3,832
Comprehensive loss attributable to noncontrolling interests	(4)	0	(95)	(73)
Consolidated Comprehensive Income Attributable to Company	1,703	1,526	3,924	3,905
SOUTHERN POWER CO
Net income	(1)	82	46	191
Qualifying hedges:
Changes in fair value, net of tax	(6)	10	45	(5)
Reclassification adjustment for amounts included in net income, net of tax	1	(14)	(46)	5
Pension and other postretirement benefit plans:
Benefit plan net gain (loss), net of tax	0	0	0	1
Total other comprehensive income (loss)	(5)	(4)	(1)	1
Comprehensive Income	(6)	78	45	192
Comprehensive loss attributable to noncontrolling interests	(4)	0	(95)	(73)
Consolidated Comprehensive Income Attributable to Company	$ (2)	$ 78	$ 140	$ 265