Condensed Consolidated Statements of Cash Flows (Unaudited) - SPC - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating Activities:
Consolidated net income	$ 1,622	$ 2,079
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	2,436	1,995
Deferred income taxes	(34)	240
Utilization of federal investment tax credits	110	281
Other, net	(50)	34
Changes in certain current assets and liabilities —
Receivables	735	(637)
Other current assets	103	(101)
Accounts payable	(997)	703
Accrued compensation	(378)	(260)
Other current liabilities	101	(120)
Net cash provided from operating activities	2,900	3,579
Investing Activities:
Property additions	(3,898)	(3,213)
Other investing activities	(100)	18
Net cash used for investing activities	(4,288)	(3,460)
Financing Activities:
Increase (decrease) in notes payable, net	(375)
Increase (decrease) in notes payable, net		263
Capital contributions from noncontrolling interests	21	73
Distributions to noncontrolling interests	(87)	(115)
Payment of common stock dividends	(1,506)	(1,425)
Other financing activities	(121)	(219)
Net cash provided from (used for) financing activities	1,595	(213)
Net Change in Cash, Cash Equivalents, and Restricted Cash	207	(94)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	2,037	1,829
Cash, Cash Equivalents, and Restricted Cash at End of Period	2,244	1,735
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	1,043	836
Income taxes, net	(40)	157
Noncash transactions —
Accrued property additions at end of period	810	837
Reassessment of right-of-use assets under operating leases	0	40
SOUTHERN POWER CO
Operating Activities:
Consolidated net income	109	103
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	260	264
Deferred income taxes	(14)	14
Utilization of federal investment tax credits	99	239
Amortization of investment tax credits	(29)	(29)
Gain on dispositions, net	(20)	(2)
Other, net	(19)	(25)
Changes in certain current assets and liabilities —
Receivables	77	(161)
Prepaid income taxes	9	22
Other current assets	(13)	(6)
Accounts payable	(91)	114
Increase Decrease in Accrued Taxes	8	42
Accrued compensation	(11)	(8)
Other current liabilities	(8)	(15)
Net cash provided from operating activities	357	552
Investing Activities:
Property additions	(25)	(34)
Proceeds from dispositions	59	48
Change in construction payables	(20)	(54)
Payments pursuant to LTSAs	(31)	(33)
Other investing activities	(1)	0
Net cash used for investing activities	(18)	(73)
Financing Activities:
Increase (decrease) in notes payable, net	(124)
Increase (decrease) in notes payable, net		94
Redemptions — Senior notes	0	(677)
Capital contributions from parent company	13	326
Capital contributions from noncontrolling interests	21	73
Distributions to noncontrolling interests	(87)	(115)
Payment of common stock dividends	(126)	(99)
Other financing activities	3	(5)
Net cash provided from (used for) financing activities	(300)	(403)
Net Change in Cash, Cash Equivalents, and Restricted Cash	39	76
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	133	135
Cash, Cash Equivalents, and Restricted Cash at End of Period	172	211
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	74	91
Income taxes, net	(64)	(263)
Noncash transactions —
Accrued property additions at end of period	7	28
Reassessment of right-of-use assets under operating leases	$ 0	$ 40