Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Operating Revenues
Regulated electric		$ 6,324	$ 5,933
Regulated natural gas		882	1,002
Nonregulated electric and other		70	76
Total operating revenues		7,276	7,011
Operating Expenses
Operation, maintenance and other		1,310	1,548
Depreciation and amortization		1,227	1,257
Property and other taxes		389	382
Impairment of assets and other charges		8	215
Total operating expenses		5,609	5,700
Gains on Sales of Other Assets and Other, net		7	3
Operating Income		1,674	1,314
Other Income and Expenses
Equity in earnings of unconsolidated affiliates		20	26
Other income and expenses, net		151	89
Total other income and expenses		171	115
Interest Expense		720	569
Income From Continuing Operations Before Income Taxes		1,125	860
Income Tax Expense From Continuing Operations		155	25
Income From Continuing Operations		970	835
Loss from discontinued operations, net of tax		(209)	(15)
Net Income		761	820
Add: Net Loss Attributable to Noncontrolling Interests		43	37
Net Income Attributable to Parent		804	857
Less: Preferred Dividends		39	39
Net Income Available to Common Stockholders		$ 765	$ 818
Basic (in usd per share)		$ (0.19)	$ 0.02
Diluted (in usd per share)		$ (0.19)	$ 0.02
Other Comprehensive Income, net of tax
Pension and OPEB adjustments	[1]	$ (1)	$ 2
Net unrealized gain on cash flow hedges	[1]	(20)	113
Unrealized (losses) gains on available-for-sale securities	[1]	6	(13)
Other Comprehensive Income (Loss), net of tax	[1]	(26)	107
Comprehensive Income		735	927
Add: Comprehensive Loss Attributable to Noncontrolling Interests		(43)	(29)
Comprehensive Income Attributable to Duke Energy Corporation		$ 778	$ 956
Income from continuing operations available to Duke Energy Corporation common stockholders
Diluted (in usd per share)		$ 1.20	$ 1.06
Basic (in usd per share)		1.20	1.06
(Loss) Income from discontinued operations attributable to Duke Energy Corporation common stockholders
Basic (usd per share)		(0.19)	0.02
Diluted (usd per share)		(0.19)	0.02
Net income available to Duke Energy Corporation common stockholders
Basic (in usd per share)		1.01	1.08
Diluted (in usd per share)		$ 1.01	$ 1.08
Weighted average shares outstanding
Basic (in shares)		770	770
Diluted (in shares)		770	770
Fuel used in electric generation and purchased power
Operating Expenses
Cost of sales		$ 2,377	$ 1,817
Cost of natural gas
Operating Expenses
Cost of sales		298	481
Duke Energy Carolinas
Operating Revenues
Total operating revenues		1,934	1,888
Operating Expenses
Cost of sales		623	448
Operation, maintenance and other		440	512
Depreciation and amortization		366	379
Property and other taxes		95	93
Impairment of assets and other charges		2	3
Total operating expenses		1,526	1,435
Operating Income		408	453
Other Income and Expenses
Total other income and expenses		59	55
Interest Expense		160	141
Income From Continuing Operations Before Income Taxes		307	367
Income Tax Expense From Continuing Operations		35	27
Net Income Attributable to Parent		272	340
Other Comprehensive Income, net of tax
Comprehensive Income Attributable to Duke Energy Corporation		272	340
Progress Energy
Operating Revenues
Total operating revenues		3,048	2,992
Operating Expenses
Cost of sales		1,191	1,064
Operation, maintenance and other		568	645
Depreciation and amortization		504	536
Property and other taxes		168	152
Impairment of assets and other charges		5
Total operating expenses		2,436	2,397
Gains on Sales of Other Assets and Other, net		6	2
Operating Income		618	597
Other Income and Expenses
Total other income and expenses		59	35
Interest Expense		246	211
Income From Continuing Operations Before Income Taxes		431	421
Income Tax Expense From Continuing Operations		72	67
Net Income		359	354
Other Comprehensive Income, net of tax
Net unrealized gain on cash flow hedges			1
Unrealized (losses) gains on available-for-sale securities		2	(2)
Other Comprehensive Income (Loss), net of tax		2	(1)
Comprehensive Income		361	353
Duke Energy Progress
Operating Revenues
Total operating revenues		1,533	1,632
Operating Expenses
Cost of sales		545	574
Operation, maintenance and other		350	391
Depreciation and amortization		315	306
Property and other taxes		48	49
Impairment of assets and other charges		4
Total operating expenses		1,262	1,320
Gains on Sales of Other Assets and Other, net			1
Operating Income		271	313
Other Income and Expenses
Total other income and expenses		29	22
Interest Expense		102	85
Income From Continuing Operations Before Income Taxes		198	250
Income Tax Expense From Continuing Operations		29	35
Net Income Attributable to Parent		169	215
Other Comprehensive Income, net of tax
Comprehensive Income Attributable to Duke Energy Corporation		169	215
Duke Energy Florida
Operating Revenues
Total operating revenues		1,510	1,355
Operating Expenses
Cost of sales		646	490
Operation, maintenance and other		213	249
Depreciation and amortization		190	231
Property and other taxes		120	103
Impairment of assets and other charges		1
Total operating expenses		1,170	1,073
Gains on Sales of Other Assets and Other, net		1	1
Operating Income		341	283
Other Income and Expenses
Total other income and expenses		30	15
Interest Expense		115	84
Income From Continuing Operations Before Income Taxes		256	214
Income Tax Expense From Continuing Operations		51	43
Net Income Attributable to Parent		205	171
Other Comprehensive Income, net of tax
Unrealized (losses) gains on available-for-sale securities		2	(1)
Other Comprehensive Income (Loss), net of tax		2	(1)
Comprehensive Income Attributable to Duke Energy Corporation		207	170
Duke Energy Ohio
Operating Revenues
Regulated electric		474	412
Regulated natural gas		235	226
Total operating revenues		709	638
Operating Expenses
Operation, maintenance and other		123	178
Depreciation and amortization		90	80
Property and other taxes		80	101
Total operating expenses		561	593
Operating Income		148	45
Other Income and Expenses
Total other income and expenses		8	6
Interest Expense		36	30
Income From Continuing Operations Before Income Taxes		120	21
Income Tax Expense From Continuing Operations		20	(56)
Net Income Attributable to Parent		100	77
Other Comprehensive Income, net of tax
Comprehensive Income Attributable to Duke Energy Corporation		100	77
Duke Energy Ohio | Fuel used in electric generation and purchased power
Operating Expenses
Cost of sales		176	127
Duke Energy Ohio | Cost of natural gas
Operating Expenses
Cost of sales		92	107
Duke Energy Indiana
Operating Revenues
Total operating revenues		975	822
Operating Expenses
Cost of sales		449	319
Operation, maintenance and other		184	192
Depreciation and amortization		158	156
Property and other taxes		18	25
Impairment of assets and other charges			211
Total operating expenses		809	903
Operating Income		166	(81)
Other Income and Expenses
Total other income and expenses		14	10
Interest Expense		52	45
Income From Continuing Operations Before Income Taxes		128	(116)
Income Tax Expense From Continuing Operations		22	(37)
Net Income Attributable to Parent		106	(79)
Other Comprehensive Income, net of tax
Comprehensive Income Attributable to Duke Energy Corporation		106	(79)
Piedmont
Operating Revenues
Total operating revenues		675	805
Operating Expenses
Cost of sales		206	374
Operation, maintenance and other		89	95
Depreciation and amortization		57	54
Property and other taxes		16	16
Total operating expenses		369	539
Operating Income		306	266
Other Income and Expenses
Total other income and expenses		16	13
Interest Expense		40	32
Income From Continuing Operations Before Income Taxes		282	247
Income Tax Expense From Continuing Operations		50	33
Net Income		232	214
Net Income Attributable to Parent		232	214
Other Comprehensive Income, net of tax
Comprehensive Income Attributable to Duke Energy Corporation		$ 232	$ 214

[1] Net of income tax benefit of approximately $8 million and income tax expense of approximately $32 million for the three months ended March 31, 2023, and 2022, respectfully.