Consolidated Statements of Comprehensive Income - SPC - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net Income	$ 3,849	$ 3,428	$ 2,309
Qualifying hedges:
Changes in fair value, net of tax	(41)	(60)	(49)
Reclassification adjustment for amounts included in net income, net of tax	69	73	96
Pension and other postretirement benefit plans:
Benefit plan net gain (loss), net of tax	(39)	48	98
Reclassification adjustment for amounts included in net income, net of tax	1	10	13
Total other comprehensive income (loss)	(10)	71	158
Comprehensive loss attributable to noncontrolling interests	(127)	(107)	(99)
Comprehensive Income	3,966	3,595	2,551
Southern Power
Net Income	230	247	167
Qualifying hedges:
Changes in fair value, net of tax	(3)	(91)	(67)
Reclassification adjustment for amounts included in net income, net of tax	11	81	89
Pension and other postretirement benefit plans:
Benefit plan net gain (loss), net of tax	(7)	18	16
Reclassification adjustment for amounts included in net income, net of tax	0	2	2
Total other comprehensive income (loss)	1	10	40
Comprehensive loss attributable to noncontrolling interests	(127)	(107)	(99)
Comprehensive Income	$ 358	$ 364	$ 306