Condensed Consolidated Statements of Cash Flows (Unaudited) - SPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities:
Net income	$ 1,071	$ 799
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	1,261	1,233
Other, net	76	51
Changes in certain current assets and liabilities —
Receivables	52	790
Other current assets	(27)	34
Accounts payable	(423)	(1,056)
Accrued compensation	(488)	(478)
Other current liabilities	103	75
Net cash provided from operating activities	1,311	844
Investing Activities:
Property additions	(1,770)	(1,850)
Other investing activities	(111)	(91)
Net cash used for investing activities	(2,385)	(2,118)
Financing Activities:
Increase (decrease) in notes payable, net	236	187
Capital contributions from noncontrolling interests	9	21
Distributions to noncontrolling interests	(34)	(48)
Payment of common stock dividends	(733)	(742)
Other financing activities	(124)	(83)
Net cash provided from financing activities	985	454
Net Change in Cash, Cash Equivalents, and Restricted Cash	(89)	(820)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	921	2,037
Cash, Cash Equivalents, and Restricted Cash at End of Period	832	1,217
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	714	652
Income taxes, net	(9)	(9)
Noncash transactions —
Accrued property additions at end of period	580	833
SOUTHERN POWER CO
Operating Activities:
Net income	38	39
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	121	133
Amortization of investment tax credits	(15)	(15)
Gain on dispositions, net	0	(20)
Other, net	(5)	(11)
Changes in certain current assets and liabilities —
Receivables	46	120
Prepaid income taxes	2	15
Other current assets	0	(13)
Accounts payable	(57)	(92)
Accrued compensation	(14)	(13)
Other current liabilities	5	(8)
Net cash provided from operating activities	121	135
Investing Activities:
Property additions	(28)	(11)
Proceeds from dispositions	0	46
Change in construction payables	(12)	(15)
Payments pursuant to LTSAs	(11)	(16)
Other investing activities	7	0
Net cash used for investing activities	(44)	4
Financing Activities:
Increase (decrease) in notes payable, net	4
Increase (decrease) in notes payable, net		(59)
Capital contributions from noncontrolling interests	9	21
Distributions to noncontrolling interests	(34)	(48)
Payment of common stock dividends	(65)	(63)
Other financing activities	(3)	3
Net cash provided from financing activities	(89)	(146)
Net Change in Cash, Cash Equivalents, and Restricted Cash	(12)	(7)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	144	133
Cash, Cash Equivalents, and Restricted Cash at End of Period	132	126
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	23	30
Income taxes, net	(9)	(9)
Noncash transactions —
Accrued property additions at end of period	$ 40	$ 12