Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Operating Revenues
Regulated electric		$ 5,933	$ 5,219
Regulated natural gas		1,002	749
Nonregulated electric and other		197	182
Total operating revenues		7,132	6,150
Operating Expenses
Operation, maintenance and other		1,630	1,402
Depreciation and amortization		1,320	1,226
Property and other taxes		392	353
Impairment of assets and other charges		215
Total operating expenses		5,855	4,700
Hide Row		2
Operating Income		1,279	1,450
Other Income and Expenses
Equity in earnings (losses) of unconsolidated affiliates		25	(17)
Other income and expenses, net		89	127
Total other income and expenses		114	110
Interest Expense		587	535
Income Before Income Taxes		806	1,025
Income Tax (Benefit) Expense		(14)	84
Net Income		820	941
Add: Net Loss Attributable to Noncontrolling Interests		37	51
Net Income Attributable to Duke Energy Corporation		857	992
Less: Preferred Dividends		39	39
Net Income Available to Duke Energy Corporation Common Stockholders		818	953
Other Comprehensive Income (Loss), net of tax
Pension and OPEB adjustments	[1]	2	2
Net unrealized (losses) gains on cash flow hedges	[1]	113	29
Unrealized losses on available-for-sale securities	[1]	(13)	(8)
Other Comprehensive Income, net of tax	[1]	107	26
Comprehensive Income		927	967
Add: Comprehensive Loss Attributable to Noncontrolling Interests		(29)	(44)
Comprehensive Income Attributable to Duke Energy		$ 956	$ 1,011
Net income available to Duke Energy Corporation common stockholders
Basic (in usd per share)		$ 1.08	$ 1.25
Diluted (in usd per share)		$ 1.08	$ 1.25
Weighted Average Shares Outstanding
Basic (in shares)		770	769
Diluted (in shares)		770	769
Duke Energy Carolinas
Operating Revenues
Total operating revenues		$ 1,888	$ 1,716
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		448	422
Operation, maintenance and other		512	441
Depreciation and amortization		379	359
Property and other taxes		93	83
Impairment of assets and other charges		3
Total operating expenses		1,435	1,305
Operating Income		453	411
Other Income and Expenses
Total other income and expenses		55	48
Interest Expense		141	124
Income Before Income Taxes		367	335
Income Tax (Benefit) Expense		27	23
Net Income Attributable to Duke Energy Corporation		340	312
Other Comprehensive Income (Loss), net of tax
Comprehensive Income Attributable to Duke Energy		340	312
Progress Energy
Operating Revenues
Total operating revenues		2,992	2,505
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		1,064	795
Operation, maintenance and other		645	601
Depreciation and amortization		536	485
Property and other taxes		152	142
Total operating expenses		2,397	2,023
Hide Row		2
Operating Income		597	482
Other Income and Expenses
Total other income and expenses		35	43
Interest Expense		211	192
Income Before Income Taxes		421	333
Income Tax (Benefit) Expense		67	43
Net Income		354	290
Other Comprehensive Income (Loss), net of tax
Net unrealized (losses) gains on cash flow hedges		1	1
Unrealized losses on available-for-sale securities		(2)	(1)
Other Comprehensive Income, net of tax		(1)
Comprehensive Income		353	290
Duke Energy Progress
Operating Revenues
Total operating revenues		1,632	1,401
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		574	436
Operation, maintenance and other		391	357
Depreciation and amortization		306	285
Property and other taxes		49	49
Total operating expenses		1,320	1,127
Hide Row		1
Operating Income		313	274
Other Income and Expenses
Total other income and expenses		22	24
Interest Expense		85	69
Income Before Income Taxes		250	229
Income Tax (Benefit) Expense		35	19
Net Income Attributable to Duke Energy Corporation		215	210
Other Comprehensive Income (Loss), net of tax
Comprehensive Income Attributable to Duke Energy		215	210
Duke Energy Florida
Operating Revenues
Total operating revenues		1,355	1,101
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		490	359
Operation, maintenance and other		249	242
Depreciation and amortization		231	200
Property and other taxes		103	93
Total operating expenses		1,073	894
Hide Row		1
Operating Income		283	207
Other Income and Expenses
Total other income and expenses		15	18
Interest Expense		84	80
Income Before Income Taxes		214	145
Income Tax (Benefit) Expense		43	28
Net Income Attributable to Duke Energy Corporation		171	117
Other Comprehensive Income (Loss), net of tax
Unrealized losses on available-for-sale securities		(1)	(1)
Other Comprehensive Income, net of tax		(1)	(1)
Comprehensive Income Attributable to Duke Energy		170	116
Duke Energy Ohio
Operating Revenues
Regulated electric		412	363
Regulated natural gas		226	169
Total operating revenues		638	532
Operating Expenses
Operation, maintenance and other		178	108
Depreciation and amortization		80	74
Property and other taxes		101	92
Total operating expenses		593	407
Operating Income		45	125
Other Income and Expenses
Total other income and expenses		6	5
Interest Expense		30	25
Income Before Income Taxes		21	105
Income Tax (Benefit) Expense		(56)	14
Net Income Attributable to Duke Energy Corporation		77	91
Other Comprehensive Income (Loss), net of tax
Comprehensive Income Attributable to Duke Energy		77	91
Duke Energy Indiana
Operating Revenues
Total operating revenues		822	745
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		319	217
Operation, maintenance and other		192	178
Depreciation and amortization		156	152
Property and other taxes		25	21
Impairment of assets and other charges		211
Total operating expenses		903	568
Operating Income		(81)	177
Other Income and Expenses
Total other income and expenses		10	9
Interest Expense		45	50
Income Before Income Taxes		(116)	136
Income Tax (Benefit) Expense		(37)	24
Net Income Attributable to Duke Energy Corporation		(79)	112
Other Comprehensive Income (Loss), net of tax
Comprehensive Income Attributable to Duke Energy		(79)	112
Piedmont
Operating Revenues
Total operating revenues		805	606
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		374	225
Operation, maintenance and other		95	78
Depreciation and amortization		54	48
Property and other taxes		16	14
Total operating expenses		539	365
Operating Income		266	241
Other Income and Expenses
Equity in earnings (losses) of unconsolidated affiliates		2	2
Total other income and expenses		13	17
Interest Expense		32	29
Income Before Income Taxes		247	229
Income Tax (Benefit) Expense		33	26
Net Income Attributable to Duke Energy Corporation		214	203
Other Comprehensive Income (Loss), net of tax
Comprehensive Income Attributable to Duke Energy		214	203
Fuel used in electric generation and purchased power
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		1,817	1,443
Fuel used in electric generation and purchased power | Duke Energy Ohio
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		127	82
Cost of natural gas
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		481	276
Cost of natural gas | Duke Energy Ohio
Operating Expenses
Fuel used in electric generation and purchased power/Cost of natural gas		$ 107	$ 51

[1] Net of income tax impacts of approximately $32 million and $8 million for the three months ended March 31, 2022, and 2021, respectively.