Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Ohio - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Regulated electric	$ 397	$ 263	$ 1,824	$ 1,314
Regulated natural gas	7,374	6,495	19,381	16,972
Total operating revenues	7,968	6,951	21,785	18,859
Operating Expenses
Operation, maintenance and other	1,394	1,507	4,471	4,319
Depreciation and amortization	1,364	1,265	3,986	3,698
Property and other taxes	378	371	1,149	1,073
Total operating expenses	5,950	5,273	17,085	14,564
Gains (Losses) on Sales of Other Assets and Other, net	6	9	16	11
Operating Income	2,024	1,687	4,716	4,306
Total other income and expenses	115	260	380	507
Interest Expense	621	581	1,815	1,688
Income From Continuing Operations Before Income Taxes	1,518	1,366	3,281	3,125
Income Tax Expense From Continuing Operations	128	90	191	210
Comprehensive Income	1,417	1,414	3,411	3,102
Net Income Attributable to Duke Energy Corporation	1,422	1,405	3,186	3,162
Fuel used in electric generation and purchased power
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas	2,629	1,844	6,418	4,702
Cost of natural gas
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas	189	75	859	430
Duke Energy Ohio
Regulated electric	121	93	491	375
Regulated natural gas	507	413	1,320	1,119
Total operating revenues	628	506	1,811	1,494
Operating Expenses
Operation, maintenance and other	121	116	408	335
Depreciation and amortization	84	79	247	228
Property and other taxes	79	91	272	266
Total operating expenses	479	414	1,529	1,204
Gains (Losses) on Sales of Other Assets and Other, net	(1)
Operating Income	148	92	282	290
Total other income and expenses	4	4	16	14
Interest Expense	32	29	92	82
Income From Continuing Operations Before Income Taxes	120	67	206	222
Income Tax Expense From Continuing Operations	17	9	(30)	34
Comprehensive Income	103	58	236	188
Net Income Attributable to Duke Energy Corporation	103	58	236	188
Duke Energy Ohio | Fuel used in electric generation and purchased power
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas	185	119	439	294
Duke Energy Ohio | Cost of natural gas
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas	$ 21	$ 9	$ 174	$ 76