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Consolidated Statements of Cash Flows - Southern - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Operating Activities:      
Consolidated net income $ 4,171 $ 4,260 $ 3,849
Adjustments to reconcile consolidated net income to net cash provided from operating activities —      
Depreciation and amortization, total 6,030 5,266 4,986
Deferred income taxes 618 626 416
Allowance for equity funds used during construction (340) (235) (268)
Pension, postretirement, and other employee benefits (579) (556) (527)
Settlement of asset retirement obligations (634) (566) (617)
Storm damage and reliability reserve accruals 236 163 124
Stock based compensation expense 136 132 137
Loss on extinguishment of debt 252 0 0
Retail fuel cost under recovery – long-term (176) (32) (206)
Storm damage cost recovery – long-term (275) (631) 0
Other, net (36) (60) (206)
Changes in certain current assets and liabilities —      
-Receivables (124) (372) 482
-Retail fuel cost under recovery 645 984 686
-Fossil fuel for generation 68 140 (368)
-Materials and supplies (24) (189) (345)
-Natural gas cost under recovery 0 0 108
-Other current assets 47 (47) (106)
-Accounts payable (290) 492 (863)
-Accrued interest 125 30 42
-Accrued taxes (36) 206 23
-Customer refunds (75) 83 (157)
-Natural gas cost over recovery (36) (21) 214
-Other current liabilities 99 115 149
Net cash provided from operating activities 9,802 9,788 7,553
Investing Activities:      
Property additions (12,737) (8,955) (9,095)
Business acquisition (635) 0 0
Nuclear decommissioning trust fund purchases (1,702) (1,551) (1,142)
Nuclear decommissioning trust fund sales 1,685 1,535 1,121
Proceeds from dispositions 1 369 164
Cost of removal, net of salvage (655) (632) (592)
Change in construction payables, net 301 106 18
Payments pursuant to LTSAs (159) (108) (99)
Other investing activities (58) (164) (43)
Net cash used for investing activities (13,959) (9,400) (9,668)
Financing Activities:      
Increase (decrease) in notes payable, net (414) (648)  
Increase (decrease) in notes payable, net     973
Proceeds —      
Long-term debt 12,470 6,159 8,972
Short-term borrowings 200 700 350
Common stock 1,623 143 36
Redemptions and repurchases —      
Long-term debt (5,464) (2,222) (4,294)
Short-term borrowings 0 (1,020) (1,630)
Distributions to noncontrolling interests (200) (185) (234)
Purchase of membership interests from noncontrolling interests (286) 0 0
Payment of common stock dividends (3,015) (2,954) (3,035)
Other financing activities (218) (181) (139)
Net cash provided from (used for) financing activities 4,696 (208) 999
Net Change in Cash, Cash Equivalents, and Restricted Cash 539 180 (1,116)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year 1,101 921 2,037
Cash, Cash Equivalents, and Restricted Cash at End of Year 1,640 1,101 921
Supplemental Cash Flow Information:      
Interest, net of amounts capitalized 2,692 2,538 2,184
Income taxes, net (excludes credit transfers) 284 176 132
Noncash transactions —      
Accrued property additions at year-end 1,473 1,199 1,027
LTSA credits utilized from the sale of spare parts 6 13 23
Issuance of common stock under dividend reinvestment plan $ 222 $ 179 $ 0