Condensed Consolidated Statements of Cash Flows - Duke Energy Florida - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 1,836	$ 3,186
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)
Losses on sales of other assets	46	16
Impairment of assets and other charges	96	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)
(Increase) decrease in
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
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(9,310)	(8,148)
Purchases of debt and equity securities	(2,811)	(3,619)
Proceeds from sales and maturities of debt and equity securities	2,848	3,691
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)
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
Duke Energy Florida
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	810	751
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	943	790
Equity component of AFUDC	(10)	(13)
Impairment of assets and other charges	(1)
Deferred income taxes	(42)	237
Equity in earnings of unconsolidated affiliates	1
Contributions to qualified pension plans	(9)	(5)
Payments for asset retirement obligations	(46)	(73)
(Increase) decrease in
Receivables	(203)	(218)
Receivables from affiliated companies	(1)	10
Inventory	(89)	(95)
Other current assets	516	(814)
Increase (decrease) in
Accounts payable	(140)	354
Accounts payable to affiliated companies	(23)	(90)
Taxes accrued	289	123
Other current liabilities	23	72
Other assets	12	(162)
Other liabilities	(14)	37
Net cash provided by operating activities	2,016	904
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(1,851)	(1,624)
Purchases of debt and equity securities	(135)	(153)
Proceeds from sales and maturities of debt and equity securities	182	216
Other	(125)	(76)
Net cash used in investing activities	(1,929)	(1,637)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	281	4
Payments for the redemption of long-term debt	(76)	(74)
Notes payable to affiliated companies	(313)	784
Other	(1)	(1)
Net cash provided by financing activities	(109)	713
Net (decrease) increase in cash, cash equivalents and restricted cash	(22)	(20)
Cash, cash equivalents and restricted cash at beginning of period	86	62
Cash, cash equivalents and restricted cash at end of period	64	42
Significant non-cash transactions:
Accrued capital expenditures	$ 352	$ 288