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Consolidated Statements of Cash Flows - Southern - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Operating Activities:      
Consolidated net income $ 2,309 $ 3,103 $ 4,744
Adjustments to reconcile consolidated net income to net cash provided from operating activities —      
Depreciation and amortization, total 3,973 3,905 3,331
Deferred income taxes (49) (241) 611
Utilization of federal investment tax credits 288 341 757
Allowance for equity funds used during construction (190) (149) (128)
Pension, postretirement, and other employee benefits (305) (259) (204)
Pension and postretirement funding 0 (2) (1,136)
Settlement of asset retirement obligations (456) (442) (328)
Storm damage accruals 288 325 168
Stock based compensation expense 144 113 107
Estimated loss on Plant Vogtle Units 3 and 4 1,692 325 0
Impairment charges 91 206 168
Gain on dispositions, net (176) (66) (2,588)
Retail fuel cost under recovery – long-term (536) 0 0
Natural gas cost under recovery – long-term (207) 0 0
Other, net 86 (74) 115
Changes in certain current assets and liabilities —      
-Receivables (81) (222) 630
-Materials and supplies (130) (157) (17)
-Natural gas cost under recovery (266) 0 0
-Other current assets (170) (161) 12
-Accounts payable (8) (27) (693)
-Accrued taxes (54) 242 117
-Retail fuel cost over recovery (155) 96 62
-Customer refunds 130 (236) 126
-Other current liabilities (49) 76 (73)
Net cash provided from operating activities 6,169 6,696 5,781
Investing Activities:      
Business acquisitions, net of cash acquired (345) (81) (50)
Property additions (7,240) (7,441) (7,555)
Nuclear decommissioning trust fund purchases (1,598) (877) (888)
Nuclear decommissioning trust fund sales 1,593 871 882
Proceeds from dispositions 917 1,049 5,122
Cost of removal, net of salvage (442) (361) (393)
Change in construction payables, net (124) 37 (169)
Payments pursuant to LTSAs (188) (211) (234)
Other investing activities 74 (16) (107)
Net cash used for investing activities (7,353) (7,030) (3,392)
Financing Activities:      
Increase (decrease) in notes payable, net 530   640
Increase (decrease) in notes payable, net   (1,096)  
Proceeds —      
Long-term debt 8,262 8,047 5,220
Short-term borrowings 325 615 350
Common stock 73 74 844
Redemptions and repurchases —      
Long-term debt (4,327) (4,458) (4,347)
Short-term borrowings (25) (840) (1,850)
Capital contributions from noncontrolling interests 501 363 196
Distributions to noncontrolling interests (351) (271) (256)
Payment of common stock dividends (2,777) (2,685) (2,570)
Other financing activities (266) (325) (157)
Net cash provided from (used for) financing activities 1,945 (576) (1,930)
Net Change in Cash, Cash Equivalents, and Restricted Cash 761 (910) 459
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year 1,068 1,978 1,519
Cash, Cash Equivalents, and Restricted Cash at End of Year 1,829 1,068 1,978
Supplemental Cash Flow Information:      
Interest, net of amounts capitalized 1,718 1,683 1,651
Income taxes, net 93 64 276
Noncash transactions —      
Accrued property additions at year-end 866 989 932
Contributions from noncontrolling interests 89 12 80
Contributions of wind turbine equipment $ 82 $ 17 $ 26