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Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Ohio - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Regulated electric $ 6,746 $ 6,176 $ 13,478 $ 12,500
Regulated natural gas 347 331 1,213 1,213
Total operating revenues 7,172 6,578 14,843 13,854
Operating Expenses        
Operation, maintenance and other 1,320 1,375 2,699 2,685
Depreciation and amortization 1,409 1,333 2,796 2,560
Property and other taxes 393 353 779 742
Total operating expenses 5,471 5,179 11,191 10,788
Operating Income 1,707 1,430 3,670 3,104
Other Income and Expenses, net 188 167 374 338
Interest Expense 824 727 1,641 1,447
Income From Continuing Operations Before Income Taxes 1,071 870 2,403 1,995
Income Tax Expense From Continuing Operations 140 119 318 274
Net Income (Loss) Attributable to Duke Energy Corporation 900 (220) 2,038 584
Fuel used in electric generation and purchased power        
Operating Expenses        
Cost of sales 2,228 2,039 4,563 4,416
Cost of natural gas        
Operating Expenses        
Cost of sales 78 79 310 377
Duke Energy Ohio        
Regulated electric 476 465 934 939
Regulated natural gas 132 124 352 359
Total operating revenues 608 589 1,286 1,298
Operating Expenses        
Operation, maintenance and other 121 121 247 244
Depreciation and amortization 96 86 195 176
Property and other taxes 102 84 204 164
Total operating expenses 472 475 998 1,036
Operating Income 136 114 288 262
Other Income and Expenses, net 4 13 10 21
Interest Expense 47 43 92 79
Income From Continuing Operations Before Income Taxes 93 84 206 204
Income Tax Expense From Continuing Operations 16 13 35 33
Net Income (Loss) Attributable to Duke Energy Corporation 77 71 171 171
Duke Energy Ohio | Fuel used in electric generation and purchased power        
Operating Expenses        
Cost of sales 132 164 270 340
Duke Energy Ohio | Cost of natural gas        
Operating Expenses        
Cost of sales $ 21 $ 20 $ 82 $ 112