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Condensed Consolidated Balance Sheets (Unaudited) - Southern - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Current Assets:    
Cash and cash equivalents $ 981 $ 1,639
Receivables —    
Customer accounts 2,405 2,251
Unbilled revenues 740 931
Under recovered fuel clause revenues 299 316
Other accounts and notes 524 655
Accumulated provision for uncollectible accounts (95) (84)
Materials and supplies 2,297 2,202
Fossil fuel for generation 727 735
Natural gas for sale 145 396
Prepaid expenses 411 327
Assets from risk management activities, net of collateral 35 63
Regulatory assets – asset retirement obligations 353 353
Other regulatory assets 706 709
Other current assets 433 424
Total current assets 9,961 10,917
Property, Plant, and Equipment:    
In service 149,086 146,114
Less: Accumulated depreciation 45,186 43,483
Plant in service, net of depreciation 103,900 102,631
Other utility plant, net 0 307
Nuclear fuel, at amortized cost 920 897
Construction work in progress 11,282 10,534
Total property, plant, and equipment 116,102 114,369
Other Property and Investments:    
Goodwill 5,161 5,161
Nuclear decommissioning trusts, at fair value 2,888 2,947
Equity investments in unconsolidated subsidiaries 1,365 1,318
Other intangible assets, net of amortization 294 300
Miscellaneous property and investments 706 714
Total other property and investments 10,414 10,440
Deferred Charges and Other Assets:    
Operating lease right-of-use assets, net of amortization 1,351 1,358
Deferred charges related to income taxes 1,026 948
Prepaid pension costs 3,369 3,257
Unamortized loss on reacquired debt 183 187
Deferred under recovered fuel clause revenues 210 252
Regulatory assets – asset retirement obligations, deferred 5,198 5,129
Other regulatory assets, deferred 7,683 7,427
Other deferred charges and assets 1,534 1,436
Total deferred charges and other assets 20,554 19,994
Total Assets 157,031 155,720
Current Liabilities:    
Securities due within one year 5,701 6,220
Notes payable 1,673 722
Accounts payable 2,909 3,710
Customer deposits 478 475
Accrued taxes —    
Accrued income taxes 66 22
Other accrued taxes 557 982
Accrued interest 627 807
Accrued compensation 761 1,418
Asset retirement obligations 659 662
Liabilities from risk management activities, net of collateral 134 118
Operating lease obligations 203 197
Natural gas cost over recovery 131 158
Other regulatory liabilities 228 240
Other current liabilities 1,191 1,157
Total current liabilities 15,318 16,888
Long-term Debt 67,148 65,649
Deferred Credits and Other Liabilities:    
Accumulated deferred income taxes 12,381 12,133
Deferred credits related to income taxes 4,648 4,712
Accumulated deferred ITCs 2,047 2,002
Employee benefit obligations 941 980
Operating lease obligations, deferred 1,280 1,287
Asset retirement obligations, deferred 8,907 8,939
Other cost of removal obligations 2,054 2,036
Other regulatory liabilities, deferred 770 722
Other deferred credits and liabilities 1,625 1,505
Total deferred credits and other liabilities 34,653 34,316
Total Liabilities 117,119 116,853
Total Stockholders' Equity 39,912 38,867
Total Liabilities and Stockholders' Equity $ 157,031 $ 155,720