Condensed Consolidated Statements of Cash Flows - Duke Energy Ohio - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income Attributable to Duke Energy Corporation		$ 3,186	$ 3,162
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)		4,414	4,189
Equity component of AFUDC		(151)	(126)
Deferred income taxes		209	206
Equity in earnings of unconsolidated affiliates		(87)	(14)
Contributions to qualified pension plans		(58)
Payments for asset retirement obligations		(418)	(389)
Provision for rate refunds		(97)	(41)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions		33	116
Receivables		(356)	(167)
Inventory		(290)	268
Other current assets(a)	[1]	(2,403)	(643)
Increase (decrease) in
Accounts payable		504	(146)
Taxes accrued		206	431
Other current liabilities		263	10
Other assets		(84)	199
Other liabilities		188	77
Net cash provided by operating activities		5,188	7,227
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures		(8,148)	(7,089)
Other		(517)	(269)
Net cash used in investing activities		(8,630)	(8,200)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt		9,466	6,379
Other		(124)	(21)
Net cash provided by financing activities		3,551	1,160
Net increase in cash, cash equivalents and restricted cash		109	187
Cash, cash equivalents and restricted cash at beginning of period		520	556
Cash, cash equivalents and restricted cash at end of period		629	743
Significant non-cash transactions:
Accrued capital expenditures		1,387	998
Impairment of assets and other charges		202	342
Duke Energy Ohio
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income Attributable to Duke Energy Corporation		236	188
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)		251	231
Equity component of AFUDC		(7)	(5)
Deferred income taxes		(13)	27
Contributions to qualified pension plans		(3)
Payments for asset retirement obligations		(7)	(1)
Provision for rate refunds		5	12
(Increase) decrease in
Receivables		8	(9)
Receivables from affiliated companies		11	(11)
Inventory		(2)	(4)
Other current assets(a)		(60)	(34)
Increase (decrease) in
Accounts payable		(6)	27
Accounts payable to affiliated companies		(4)	(9)
Taxes accrued		(44)	(37)
Other current liabilities		(76)	(12)
Other assets		(54)	(35)
Other liabilities		80	8
Net cash provided by operating activities		304	341
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures		(623)	(615)
Notes receivable from affiliated companies		(85)	36
Other		(47)	(42)
Net cash used in investing activities		(755)	(621)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt		50
Notes receivable from affiliated companies		399	282
Other		(2)
Net cash provided by financing activities		447	282
Net increase in cash, cash equivalents and restricted cash		(4)	2
Cash, cash equivalents and restricted cash at beginning of period		13	14
Cash, cash equivalents and restricted cash at end of period		9	16
Significant non-cash transactions:
Accrued capital expenditures		119	103
Impairment of assets and other charges		$ (11)	$ 5

[1] Includes approximately $2.2 billion of under-collected deferred fuel regulatory assets for the nine months ended September 30, 2022