Condensed Consolidated Statements of Comprehensive Income (Unaudited) - SPC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net income	$ 1,188	$ 823	$ 2,259	$ 1,622
Qualifying hedges:
Changes in fair value, net of tax	(5)	28	(4)	(36)
Reclassification adjustment for amounts included in net income, net of tax	15	15	47	34
Pension and other postretirement benefit plans:
Benefit plan net gain (loss), net of tax of $—, $—, $1, and $—, respectively	0	0	3	0
Total other comprehensive income (loss)	10	43	46	(2)
Comprehensive Income	1,198	866	2,305	1,620
Comprehensive loss attributable to noncontrolling interests	(15)	(15)	(73)	(78)
Comprehensive Income	1,213	881	2,378	1,698
SOUTHERN POWER CO
Net income	71	70	109	109
Qualifying hedges:
Changes in fair value, net of tax	(4)	5	(15)	(4)
Reclassification adjustment for amounts included in net income, net of tax	7	5	18	7
Pension and other postretirement benefit plans:
Benefit plan net gain (loss), net of tax of $—, $—, $1, and $—, respectively	0	0	1	0
Total other comprehensive income (loss)	3	10	4	3
Comprehensive Income	74	80	113	112
Comprehensive loss attributable to noncontrolling interests	(15)	(15)	(73)	(78)
Comprehensive Income	$ 89	$ 95	$ 186	$ 190