Condensed Consolidated Statements of Cash Flows - Duke Energy Florida - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,151	$ 761
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	1,534	1,344
Equity component of AFUDC	(55)	(46)
Losses on sales of other assets	12	7
Impairment of assets and other charges	1	8
Deferred income taxes	149	90
Payments for asset retirement obligations	(115)	(117)
(Increase) decrease in
Receivables	226	754
Inventory	11	(275)
Other current assets	329	262
Increase (decrease) in
Accounts payable	(553)	(1,193)
Taxes accrued	(110)	(148)
Other current liabilities	(208)	(266)
Other assets	41	(13)
Other liabilities	149	157
Net cash provided by operating activities	2,474	1,483
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(3,208)	(3,146)
Purchases of debt and equity securities	(946)	(866)
Proceeds from sales and maturities of debt and equity securities	985	882
Other	(166)	(149)
Net cash used in investing activities	(3,342)	(3,209)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	3,481	4,085
Payments for the redemption of long-term debt	(1,392)	(1,380)
Other	(67)	(84)
Net cash provided by financing activities	1,029	1,747
Net increase in cash, cash equivalents and restricted cash	161	21
Cash, cash equivalents and restricted cash at beginning of period	357	603
Cash, cash equivalents and restricted cash at end of period	518	624
Significant non-cash transactions:
Accrued capital expenditures	1,615	1,366
Duke Energy Florida
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	179	205
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	284	194
Equity component of AFUDC	(5)	(3)
Impairment of assets and other charges	0	1
Deferred income taxes	10	21
Payments for asset retirement obligations	(22)	(12)
(Increase) decrease in
Receivables	53	42
Receivables from affiliated companies	236	(1)
Inventory	(19)	(57)
Other current assets	132	363
Increase (decrease) in
Accounts payable	(48)	(211)
Accounts payable to affiliated companies	(14)	(67)
Taxes accrued	(51)	79
Other current liabilities	11	(27)
Other assets	(16)	(193)
Other liabilities	34	(8)
Net cash provided by operating activities	764	326
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(669)	(609)
Purchases of debt and equity securities	(30)	(40)
Proceeds from sales and maturities of debt and equity securities	73	68
Other	(62)	(38)
Net cash used in investing activities	(688)	(619)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	3	5
Payments for the redemption of long-term debt	(39)	(34)
Notes payable to affiliated companies	(86)	281
Other	(1)	(1)
Net cash provided by financing activities	(123)	251
Net increase in cash, cash equivalents and restricted cash	(47)	(42)
Cash, cash equivalents and restricted cash at beginning of period	67	86
Cash, cash equivalents and restricted cash at end of period	20	44
Significant non-cash transactions:
Accrued capital expenditures	$ 421	$ 340