Condensed Consolidated Statements of Cash Flows (Unaudited) - SPC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Operating Activities:
Net income	$ 3,794	$ 3,053
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	3,916	3,699
Utilization of federal tax credit carryforward	87	195
Other, net	(100)	(26)
Changes in certain current assets and liabilities —
Receivables	(233)	524
Other current assets	(181)	(32)
Accounts payable	(161)	(1,031)
Accrued taxes	179	376
Accrued compensation	(90)	(197)
Other current liabilities	(27)	66
Net cash provided from operating activities	7,615	5,740
Investing Activities:
Property additions	(6,206)	(6,561)
Other investing activities	(279)	(139)
Net cash used for investing activities	(6,678)	(6,721)
Financing Activities:
Increase (decrease) in notes payable, net	(1,264)	(298)
Distributions to noncontrolling interests	(108)	(148)
Payment of common stock dividends	(2,220)	(2,271)
Other financing activities	(157)	(120)
Net cash provided from (used for) financing activities	(803)	834
Net Change in Cash, Cash Equivalents, and Restricted Cash	134	(147)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	921	2,037
Cash, Cash Equivalents, and Restricted Cash at End of Period	1,055	1,890
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	2,015	1,694
Income taxes, net	131	11
Noncash transactions —
Accrued property additions at end of period	937	1,224
Right-of-use assets obtained under operating leases	126	76
Reassessment of right-of-use assets under operating leases	(7)	0
SOUTHERN POWER CO
Operating Activities:
Net income	191	220
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	388	395
Utilization of federal tax credit carryforward	63	179
Amortization of ITCs	(44)	(44)
Gain on dispositions, net	0	(20)
Other, net	18	5
Changes in certain current assets and liabilities —
Receivables	(24)	100
Prepaid income taxes	0	31
Other current assets	(9)	(14)
Accounts payable	(19)	(70)
Accrued taxes	56	9
Accrued compensation	(4)	(7)
Other current liabilities	(9)	15
Net cash provided from operating activities	607	799
Investing Activities:
Acquisitions, net of cash acquired	0	(181)
Property additions	(179)	(40)
Proceeds from dispositions	0	59
Change in construction payables	1	(18)
Payments pursuant to LTSAs	(34)	(49)
Other investing activities	13	5
Net cash used for investing activities	(199)	(224)
Financing Activities:
Increase (decrease) in notes payable, net	(68)
Increase (decrease) in notes payable, net		136
Redemptions — Senior notes	0	(290)
Capital contributions from parent company	8	16
Capital contributions from noncontrolling interests	11	21
Distributions to noncontrolling interests	(108)	(148)
Payment of common stock dividends	(196)	(189)
Other financing activities	(4)	3
Net cash provided from (used for) financing activities	(357)	(451)
Net Change in Cash, Cash Equivalents, and Restricted Cash	51	124
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	144	133
Cash, Cash Equivalents, and Restricted Cash at End of Period	195	257
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	88	103
Income taxes, net	(30)	(124)
Noncash transactions —
Accrued property additions at end of period	52	23
Right-of-use assets obtained under operating leases	10	7
Reassessment of right-of-use assets under operating leases	$ (7)	$ 0