Condensed Consolidated Statements of Operations and Comprehensive Income - Duke Energy Ohio - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Regulated electric	$ 425	$ 302	$ 1,427	$ 1,051
Regulated natural gas	6,074	5,258	12,007	10,477
Total operating revenues	6,685	5,758	13,817	11,908
Operating Expenses
Operation, maintenance and other	1,447	1,410	3,077	2,812
Depreciation and amortization	1,302	1,207	2,622	2,433
Property and other taxes	379	349	771	702
Total operating expenses	5,280	4,591	11,135	9,291
Gains on Sales of Other Assets and Other, net	8	2	10	2
Operating Income	1,413	1,169	2,692	2,619
Total other income and expenses	151	137	265	247
Interest Expense	607	572	1,194	1,107
Income Before Income Taxes	957	734	1,763	1,759
Income Tax Expense	77	36	63	120
Comprehensive Income	1,038	677	1,994	1,688
Net Income Attributable to Duke Energy Corporation	907	765	1,764	1,757
Fuel used in electric generation and purchased power
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas	1,972	1,415	3,789	2,858
Cost of natural gas
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas	189	79	670	355
Duke Energy Ohio
Regulated electric	144	113	370	282
Regulated natural gas	401	343	813	706
Total operating revenues	545	456	1,183	988
Operating Expenses
Operation, maintenance and other	109	111	287	219
Depreciation and amortization	83	75	163	149
Property and other taxes	92	83	193	175
Total operating expenses	457	383	1,050	790
Gains on Sales of Other Assets and Other, net	1		1
Operating Income	89	73	134	198
Total other income and expenses	6	5	12	10
Interest Expense	30	28	60	53
Income Before Income Taxes	65	50	86	155
Income Tax Expense	9	11	(47)	25
Comprehensive Income	56	39	133	130
Net Income Attributable to Duke Energy Corporation	56	39	133	130
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	127	93	254	175
Duke Energy Ohio | Cost of natural gas
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas	$ 46	$ 16	$ 153	$ 67