Condensed Consolidated Statements of Cash Flows - Progress Energy - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 2,874	$ 2,455	$ 3,579
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	6,084	5,843	5,663
Equity component of AFUDC	(198)	(197)	(171)
Gains on sales of other assets	(52)	(22)	(13)
Impairment of assets and other charges	85	434	353
Deferred income taxes	3	(200)	191
Contributions to qualified pension plans	(100)	(58)
Payments for asset retirement obligations	(632)	(584)	(540)
Provision for rate refunds	(63)	(130)	(70)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions	(18)	19	50
Receivables	443	(788)	(297)
Inventory	(706)	(476)	(34)
Other current assets	(267)	(1,498)	(1,136)
Increase (decrease) in
Accounts payable	(800)	805	249
Taxes accrued	126	10	284
Other current liabilities	(26)	(153)	(13)
Other assets	914	(1,577)	125
Other liabilities	584	410	95
Net cash provided by operating activities	9,878	5,927	8,290
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(12,604)	(11,367)	(9,715)
Purchases of debt and equity securities	(3,761)	(4,243)	(6,098)
Proceeds from sales and maturities of debt and equity securities	3,824	4,333	6,103
Other	(799)	(727)	(333)
Net cash used in investing activities	(12,475)	(11,973)	(10,935)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	10,028	11,874	9,052
Payments for the redemption of long-term debt	(4,737)	(4,396)	(5,294)
Other	(124)	(130)	(94)
Net cash provided by financing activities	2,351	6,129	2,609
Net (decrease) increase in cash, cash equivalents and restricted cash	(246)	83	(36)
Cash, cash equivalents and restricted cash at beginning of period	603	520	556
Cash, cash equivalents and restricted cash at end of period	357	603	520
Supplemental Disclosures:
Cash paid for (received from) income taxes	1	(6)	(3)
Cash paid for interest, net of amount capitalized	2,883	2,361	2,248
Significant non-cash transactions:
Accrued capital expenditures	1,908	1,766	1,325
Progress Energy
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	1,956	1,828	1,599
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion (including amortization of nuclear fuel)	2,721	2,405	2,302
Equity component of AFUDC	(67)	(68)	(51)
Gains on sales of other assets	(27)	(11)	(14)
Impairment of assets and other charges	28	12	82
Deferred income taxes	(120)	364	247
Contributions to qualified pension plans	(22)	(13)
Payments for asset retirement obligations	(329)	(291)	(288)
Provision for rate refunds	(24)	(58)	(36)
(Increase) decrease in
Net realized and unrealized mark-to-market and hedging transactions			51
Receivables	21	(322)	(97)
Receivables from affiliated companies	(68)	117	18
Inventory	(322)	(183)	(26)
Other current assets	287	(937)	(551)
Increase (decrease) in
Accounts payable	(266)	222	59
Accounts payable to affiliated companies	(248)	206	217
Taxes accrued	124	8	13
Other current liabilities	9	96	(32)
Other assets	357	(1,105)	(96)
Other liabilities	108	573	(99)
Net cash provided by operating activities	4,118	2,843	3,298
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(4,917)	(4,317)	(3,668)
Purchases of debt and equity securities	(1,590)	(1,341)	(2,233)
Proceeds from sales and maturities of debt and equity securities	1,663	1,417	2,322
Other	(329)	(137)	(156)
Net cash used in investing activities	(5,173)	(4,378)	(3,735)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from the issuance of long-term debt	2,555	2,775	3,095
Payments for the redemption of long-term debt	(1,248)	(1,173)	(1,883)
Notes payable to affiliated companies	200	465	(160)
Dividends to parent	(500)	(425)	(700)
Other	(1)	(36)	(2)
Net cash provided by financing activities	1,006	1,606	350
Net (decrease) increase in cash, cash equivalents and restricted cash	(49)	71	(87)
Cash, cash equivalents and restricted cash at beginning of period	184	113	200
Cash, cash equivalents and restricted cash at end of period	135	184	113
Supplemental Disclosures:
Cash paid for (received from) income taxes	310	79	14
Cash paid for interest, net of amount capitalized	954	854	813
Significant non-cash transactions:
Accrued capital expenditures	$ 806	$ 663	$ 501