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Consolidated Statements of Cash Flows - Southern - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating Activities:      
Consolidated net income $ 3,849 $ 3,428 $ 2,309
Adjustments to reconcile consolidated net income to net cash provided from operating activities —      
Depreciation and amortization, total 4,986 4,064 3,973
Deferred income taxes 63 670 (49)
Utilization of federal investment tax credits 353 88 288
Allowance for equity funds used during construction (268) (224) (190)
Pension, postretirement, and other employee benefits (527) (436) (305)
Settlement of asset retirement obligations (617) (455) (456)
Storm damage and reliability reserve accruals 124 430 288
Stock based compensation expense 137 127 144
Estimated loss on Plant Vogtle Units 3 and 4 (68) 183 1,692
Impairment charges 0 251 91
Retail fuel cost under recovery – long-term (206) (2,166) (536)
Natural gas cost under recovery – long-term 0 207 (207)
Other, net (138) (25) (89)
Changes in certain current assets and liabilities —      
-Receivables 482 (771) (77)
-Retail fuel cost under recovery 686 (100) (4)
-Fossil fuel for generation (368) (125) 99
-Materials and supplies (345) (160) (130)
-Natural gas cost under recovery 108 158 (266)
-Other current assets (106) (186) (270)
-Accounts payable (863) 1,021 (8)
-Customer refunds (157) 119 130
-Natural gas cost over recovery 214 0 0
-Other current liabilities 214 204 (258)
Net cash provided from operating activities 7,553 6,302 6,169
Investing Activities:      
Property additions (9,095) (7,923) (7,586)
Nuclear decommissioning trust fund purchases (1,142) (1,125) (1,598)
Nuclear decommissioning trust fund sales 1,121 1,112 1,593
Proceeds from dispositions 164 275 917
Cost of removal, net of salvage (592) (649) (442)
Change in construction payables, net 18 203 (124)
Payments pursuant to LTSAs (99) (190) (188)
Other investing activities (43) (133) 75
Net cash used for investing activities (9,668) (8,430) (7,353)
Financing Activities:      
Increase (decrease) in notes payable, net 973   530
Increase (decrease) in notes payable, net   (337)  
Proceeds —      
Long-term debt 8,972 5,132 8,262
Short-term borrowings 350 2,650 325
Common stock 36 1,808 73
Redemptions and repurchases —      
Long-term debt (4,294) (2,158) (4,327)
Short-term borrowings (1,630) (1,150) (25)
Preferred stock 0 (298) 0
Capital contributions from noncontrolling interests 21 73 501
Distributions to noncontrolling interests (234) (259) (351)
Payment of common stock dividends (3,035) (2,907) (2,777)
Other financing activities (160) (218) (266)
Net cash provided from financing activities 999 2,336 1,945
Net Change in Cash, Cash Equivalents, and Restricted Cash (1,116) 208 761
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year 2,037 1,829 1,068
Cash, Cash Equivalents, and Restricted Cash at End of Year 921 2,037 1,829
Supplemental Cash Flow Information:      
Interest, net of amounts capitalized 2,184 1,758 1,718
Income taxes, net 132 146 93
Noncash transactions —      
Accrued property additions at year-end 1,027 1,024 866
LTSA credits utilized from the sale of spare parts 23 0 0
Contributions from noncontrolling interests 0 15 89
Contributions of wind turbine equipment $ 0 $ 0 $ 82