Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,878	$ 3,113
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	4,538	4,414
Equity component of AFUDC	(146)	(151)
Gains on sales of other assets	(46)	(16)
Impairment of assets and other charges	1,699	202
Deferred income taxes	(29)	209
Equity in earnings of unconsolidated affiliates	(70)	(87)
Contributions to qualified pension plans	(100)	(58)
Payments for asset retirement obligations	(423)	(418)
Provision for rate refunds	(59)	(97)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	29	33
Receivables	481	(356)
Inventory	(531)	(290)
Other current assets	40	(2,403)
Increase (decrease) in
Accounts payable	(972)	504
Taxes accrued	277	206
Other current liabilities	(116)	263
Other assets	491	(68)
Other liabilities	368	188
Net cash provided by operating activities	7,309	5,188
Net Income Attributable to Duke Energy Corporation	1,836	3,186
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(9,310)	(8,148)
Contributions to equity method investments	(30)	(37)
Purchases of debt and equity securities	(2,811)	(3,619)
Proceeds from sales and maturities of debt and equity securities	2,848	3,691
Net proceeds from the sales of other assets	130	0
Other	578	517
Net cash used in investing activities	(9,751)	(8,630)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	8,704	9,466
Payments for the redemption of long-term debt	(3,097)	(3,803)
Proceeds from the issuance of short-term debt with original maturities greater than 90 days	575	80
Payments for the redemption of short-term debt with original maturities greater than 90 days	(110)	(287)
Notes payable and commercial paper	(1,404)	476
Contributions from noncontrolling interests	278	132
Dividends paid	(2,438)	(2,389)
Other	(95)	(124)
Net cash provided by financing activities	2,413	3,551
Net (decrease) increase in cash, cash equivalents and restricted cash	(29)	109
Cash, cash equivalents and restricted cash at beginning of period	603	520
Cash, cash equivalents and restricted cash at end of period	574	629
Significant non-cash transactions:
Accrued capital expenditures	$ 1,528	$ 1,387