Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current Assets
Cash and cash equivalents		$ 409
Receivables (net of allowance for doubtful accounts)	$ 2,635	3,106
Receivables of VIEs (net of allowance for doubtful accounts)	1,035	1,309
Inventory	3,865	3,584
Assets held for sale	374	356
Regulatory assets (includes amounts related to VIEs)	3,502	3,485
Other (including amounts related to VIEs)	452	973
Total current assets	12,314	13,222
Property, Plant and Equipment
Cost	166,096	163,839
Accumulated depreciation and amortization	(53,162)	(52,100)
Facilities to be retired, net	8	9
Net property, plant and equipment	112,942	111,748
Other Noncurrent Assets
Goodwill	19,303	19,303
Other Noncurrent Assets: Regulatory assets	14,702	14,645
Nuclear decommissioning trust funds	9,124	8,637
Operating lease right-of-use assets, net	1,019	1,042
Investments in equity method unconsolidated affiliates	465	455
Assets held for sale	5,538	5,634
Other	3,426	3,400
Total other noncurrent assets	53,577	53,116
Total Assets	178,833	178,086
Current Liabilities
Accounts payable	3,214	4,754
Notes payable and commercial paper	3,731	3,952
Taxes accrued	586	722
Interest accrued	693	626
Current maturities of long-term debt (includes amounts related to VIEs)	3,330	3,878
Asset retirement obligations	732	773
Regulatory liabilities	1,283	1,466
Liabilities associated with assets held for sale	476	535
Other	1,970	2,167
Total current liabilities	16,015	18,873
Long-Term Debt (includes amounts related to VIEs)	69,107	65,873
Other Noncurrent Liabilities
Deferred income taxes	10,188	9,964
Total noncurrent ARO	11,987	11,955
Regulatory liabilities	13,714	13,582
Operating lease liabilities	851	876
Accrued pension and other post-retirement benefit costs	820	832
Investment tax credits	852	849
Liabilities associated with assets held for sale	1,931	1,927
Other	1,417	1,502
Total other noncurrent liabilities	41,760	41,487
Commitments and Contingencies
Equity
Common stock	1	1
Additional paid-in capital	44,837	44,862
Retained earnings	2,626	2,637
Accumulated other comprehensive (loss) income	(166)	(140)
Total Parent stockholders' equity	49,260	49,322
Noncontrolling interests	2,691	2,531
Total equity	51,951	51,853
Total Liabilities and Equity	$ 178,833	$ 178,086
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares outstanding (in shares)	771,000,000	770,000,000
VIEs
Current Assets
Regulatory assets (includes amounts related to VIEs)	$ 106
Other (including amounts related to VIEs)	42	$ 116
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	1,691	1,715
Other	50	52
Current Liabilities
Current maturities of long-term debt (includes amounts related to VIEs)	101	350
Long-Term Debt (includes amounts related to VIEs)	3,334	3,108
Preferred stock, Series A
Equity
Preferred stock	973	973
Preferred stock, Series B
Equity
Preferred stock	989	989
Duke Energy Carolinas
Current Assets
Cash and cash equivalents	24	44
Receivables (net of allowance for doubtful accounts)	286	338
Receivables of VIEs (net of allowance for doubtful accounts)	782	928
Receivables from affiliated companies	181	390
Inventory	1,303	1,164
Regulatory assets (includes amounts related to VIEs)	1,311	1,095
Other (including amounts related to VIEs)	62	216
Total current assets	3,949	4,175
Property, Plant and Equipment
Cost	55,422	54,650
Accumulated depreciation and amortization	(19,082)	(18,669)
Net property, plant and equipment	36,340	35,981
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	4,309	4,293
Nuclear decommissioning trust funds	5,076	4,783
Operating lease right-of-use assets, net	75	78
Other	998	1,036
Total other noncurrent assets	10,458	10,190
Total Assets	50,747	50,346
Current Liabilities
Accounts payable	872	1,472
Accounts payable to affiliated companies	236	209
Notes payable to affiliated companies	1,153	1,233
Taxes accrued	110	228
Interest accrued	142	120
Current maturities of long-term debt (includes amounts related to VIEs)	18	1,018
Asset retirement obligations	249	261
Regulatory liabilities	418	530
Other	572	580
Total current liabilities	3,770	5,651
Long-Term Debt (includes amounts related to VIEs)	14,787	12,948
Long-Term Debt Payable to Affiliated Companies	300	300
Other Noncurrent Liabilities
Deferred income taxes	4,263	4,153
Total noncurrent ARO	5,148	5,121
Regulatory liabilities	5,817	5,783
Operating lease liabilities	80	83
Accrued pension and other post-retirement benefit costs	35	38
Investment tax credits	299	300
Other	534	527
Total other noncurrent liabilities	16,176	16,005
Commitments and Contingencies
Equity
Member's equity	15,720	15,448
Accumulated other comprehensive (loss) income	(6)	(6)
Total member's equity	15,714	15,442
Total Liabilities and Equity	50,747	50,346
Duke Energy Carolinas | VIEs
Current Assets
Regulatory assets (includes amounts related to VIEs)	12	12
Other (including amounts related to VIEs)	5	8
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	205	208
Current Liabilities
Current maturities of long-term debt (includes amounts related to VIEs)	10
Long-Term Debt (includes amounts related to VIEs)	713	689
Progress Energy
Current Assets
Cash and cash equivalents	93	108
Receivables (net of allowance for doubtful accounts)	315	318
Receivables of VIEs (net of allowance for doubtful accounts)	1,101	1,289
Receivables from affiliated companies	24	22
Notes receivable from affiliated companies	118
Inventory	1,712	1,579
Regulatory assets (includes amounts related to VIEs)	1,548	1,833
Other (including amounts related to VIEs)	166	342
Total current assets	5,077	5,491
Property, Plant and Equipment
Cost	65,852	64,822
Accumulated depreciation and amortization	(21,011)	(20,584)
Net property, plant and equipment	44,841	44,238
Other Noncurrent Assets
Goodwill	3,655	3,655
Other Noncurrent Assets: Regulatory assets	7,422	7,146
Nuclear decommissioning trust funds	4,048	3,855
Operating lease right-of-use assets, net	604	628
Other	1,097	1,066
Total other noncurrent assets	16,826	16,350
Total Assets	66,744	66,079
Current Liabilities
Accounts payable	1,127	1,481
Accounts payable to affiliated companies	410	712
Notes payable to affiliated companies	845	843
Taxes accrued	172	135
Interest accrued	224	206
Current maturities of long-term debt (includes amounts related to VIEs)	699	697
Asset retirement obligations	272	289
Regulatory liabilities	473	576
Other	771	782
Total current liabilities	4,993	5,721
Long-Term Debt (includes amounts related to VIEs)	22,522	21,592
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	5,226	5,147
Total noncurrent ARO	5,898	5,892
Regulatory liabilities	4,796	4,753
Operating lease liabilities	521	546
Accrued pension and other post-retirement benefit costs	289	292
Investment tax credits	362	358
Other	222	222
Total other noncurrent liabilities	17,314	17,210
Commitments and Contingencies
Equity
Additional paid-in capital	11,830	11,832
Retained earnings	9,944	9,585
Accumulated other comprehensive (loss) income	(9)	(11)
Total equity	21,765	21,406
Total Liabilities and Equity	$ 66,744	$ 66,079
Common stock, shares authorized (in shares)	100	100
Common stock, shares outstanding (in shares)	100	100
Progress Energy | VIEs
Current Assets
Regulatory assets (includes amounts related to VIEs)	$ 94	$ 94
Other (including amounts related to VIEs)	33	88
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	1,486	1,507
Current Liabilities
Current maturities of long-term debt (includes amounts related to VIEs)	341	340
Long-Term Debt (includes amounts related to VIEs)	1,955	2,003
Duke Energy Progress
Current Assets
Cash and cash equivalents	50	49
Receivables (net of allowance for doubtful accounts)	159	167
Receivables of VIEs (net of allowance for doubtful accounts)	654	793
Receivables from affiliated companies	26	25
Notes receivable from affiliated companies	160
Inventory	1,082	1,006
Regulatory assets (includes amounts related to VIEs)	764	690
Other (including amounts related to VIEs)	57	174
Total current assets	2,952	2,904
Property, Plant and Equipment
Cost	39,396	38,875
Accumulated depreciation and amortization	(14,452)	(14,201)
Net property, plant and equipment	24,944	24,674
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	4,817	4,724
Nuclear decommissioning trust funds	3,640	3,430
Operating lease right-of-use assets, net	356	370
Other	659	650
Total other noncurrent assets	9,472	9,174
Total Assets	37,368	36,752
Current Liabilities
Accounts payable	511	601
Accounts payable to affiliated companies	252	508
Notes payable to affiliated companies		238
Taxes accrued	56	77
Interest accrued	90	101
Current maturities of long-term debt (includes amounts related to VIEs)	370	369
Asset retirement obligations	272	288
Regulatory liabilities	293	332
Other	412	384
Total current liabilities	2,256	2,898
Long-Term Debt (includes amounts related to VIEs)	11,527	10,568
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	2,531	2,477
Total noncurrent ARO	5,552	5,535
Regulatory liabilities	4,178	4,120
Operating lease liabilities	320	335
Accrued pension and other post-retirement benefit costs	158	160
Investment tax credits	129	124
Other	89	76
Total other noncurrent liabilities	12,957	12,827
Commitments and Contingencies
Equity
Total member's equity	10,478	10,309
Total Liabilities and Equity	37,368	36,752
Duke Energy Progress | VIEs
Current Assets
Regulatory assets (includes amounts related to VIEs)	39	39
Other (including amounts related to VIEs)	15	42
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	672	681
Current Liabilities
Current maturities of long-term debt (includes amounts related to VIEs)	34
Long-Term Debt (includes amounts related to VIEs)	1,096	1,114
Duke Energy Florida
Current Assets
Cash and cash equivalents	26	45
Receivables (net of allowance for doubtful accounts)	154	148
Receivables of VIEs (net of allowance for doubtful accounts)	447	496
Receivables from affiliated companies	3	2
Inventory	630	573
Regulatory assets (includes amounts related to VIEs)	784	1,143
Other (including amounts related to VIEs)	67	108
Total current assets	2,111	2,515
Property, Plant and Equipment
Cost	26,448	25,940
Accumulated depreciation and amortization	(6,552)	(6,377)
Net property, plant and equipment	19,896	19,563
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	2,605	2,422
Nuclear decommissioning trust funds	408	424
Operating lease right-of-use assets, net	247	258
Other	393	372
Total other noncurrent assets	3,653	3,476
Total Assets	25,660	25,554
Current Liabilities
Accounts payable	616	880
Accounts payable to affiliated companies	110	177
Notes payable to affiliated companies	886	605
Taxes accrued	131	53
Interest accrued	106	80
Current maturities of long-term debt (includes amounts related to VIEs)	330	328
Asset retirement obligations	1	1
Regulatory liabilities	180	244
Other	320	363
Total current liabilities	2,680	2,731
Long-Term Debt (includes amounts related to VIEs)	9,353	9,381
Other Noncurrent Liabilities
Deferred income taxes	2,811	2,789
Total noncurrent ARO	346	357
Regulatory liabilities	618	633
Operating lease liabilities	201	211
Accrued pension and other post-retirement benefit costs	110	111
Investment tax credits	233	234
Other	77	84
Total other noncurrent liabilities	4,396	4,419
Commitments and Contingencies
Equity
Member's equity	9,237	9,031
Accumulated other comprehensive (loss) income	(6)	(8)
Total member's equity	9,231	9,023
Total Liabilities and Equity	25,660	25,554
Duke Energy Florida | VIEs
Current Assets
Regulatory assets (includes amounts related to VIEs)	55
Other (including amounts related to VIEs)	18	46
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	814	826
Current Liabilities
Current maturities of long-term debt (includes amounts related to VIEs)	307	306
Long-Term Debt (includes amounts related to VIEs)	859	890
Duke Energy Ohio
Current Assets
Cash and cash equivalents	26	16
Receivables (net of allowance for doubtful accounts)	74	73
Receivables from affiliated companies	196	247
Notes receivable from affiliated companies	258
Inventory	157	144
Regulatory assets (includes amounts related to VIEs)	54	103
Other (including amounts related to VIEs)	33	86
Total current assets	798	669
Property, Plant and Equipment
Cost	12,543	12,497
Accumulated depreciation and amortization	(3,282)	(3,250)
Net property, plant and equipment	9,261	9,247
Other Noncurrent Assets
Goodwill	920	920
Other Noncurrent Assets: Regulatory assets	623	581
Operating lease right-of-use assets, net	17	18
Other	74	71
Total other noncurrent assets	1,634	1,590
Total Assets	11,693	11,506
Current Liabilities
Accounts payable	284	380
Accounts payable to affiliated companies	65	72
Notes payable to affiliated companies	72	497
Taxes accrued	227	317
Interest accrued	31	29
Current maturities of long-term debt (includes amounts related to VIEs)	475	475
Asset retirement obligations	14	17
Regulatory liabilities	62	99
Other	66	74
Total current liabilities	1,296	1,960
Long-Term Debt (includes amounts related to VIEs)	3,491	2,745
Long-Term Debt Payable to Affiliated Companies	25	25
Other Noncurrent Liabilities
Deferred income taxes	1,142	1,136
Total noncurrent ARO	140	137
Regulatory liabilities	530	534
Operating lease liabilities	17	17
Accrued pension and other post-retirement benefit costs	91	90
Other	95	96
Total other noncurrent liabilities	2,015	2,010
Commitments and Contingencies
Equity
Common stock	762	762
Additional paid-in capital	3,100	3,100
Retained earnings	1,004	904
Total Parent stockholders' equity	4,866	4,766
Total equity	4,866	4,766
Total Liabilities and Equity	$ 11,693	$ 11,506
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares outstanding (in shares)	90,000,000	90,000,000
Duke Energy Indiana
Current Assets
Cash and cash equivalents	$ 11	$ 31
Receivables (net of allowance for doubtful accounts)	90	112
Receivables from affiliated companies	228	298
Inventory	560	489
Regulatory assets (includes amounts related to VIEs)	91	249
Other (including amounts related to VIEs)	64	197
Total current assets	1,044	1,376
Property, Plant and Equipment
Cost	18,295	18,121
Accumulated depreciation and amortization	(6,136)	(6,021)
Net property, plant and equipment	12,159	12,100
Other Noncurrent Assets
Other Noncurrent Assets: Regulatory assets	903	875
Operating lease right-of-use assets, net	48	49
Other	265	254
Total other noncurrent assets	1,216	1,178
Total Assets	14,419	14,654
Current Liabilities
Accounts payable	247	391
Accounts payable to affiliated companies	60	206
Notes payable to affiliated companies	204	435
Taxes accrued	106	92
Interest accrued	59	48
Current maturities of long-term debt (includes amounts related to VIEs)	3	303
Asset retirement obligations	197	207
Regulatory liabilities	207	187
Other	145	161
Total current liabilities	1,228	2,030
Long-Term Debt (includes amounts related to VIEs)	4,350	3,854
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	1,313	1,299
Total noncurrent ARO	741	744
Regulatory liabilities	1,517	1,454
Operating lease liabilities	46	47
Accrued pension and other post-retirement benefit costs	123	122
Investment tax credits	186	186
Other	31	65
Total other noncurrent liabilities	3,957	3,917
Commitments and Contingencies
Equity
Member's equity	4,733	4,702
Accumulated other comprehensive (loss) income	1	1
Total member's equity	4,734	4,703
Total Liabilities and Equity	14,419	14,654
Piedmont
Current Assets
Receivables (net of allowance for doubtful accounts)	245	436
Receivables from affiliated companies	11	11
Inventory	99	172
Regulatory assets (includes amounts related to VIEs)	121	119
Other (including amounts related to VIEs)	9	4
Total current assets	485	742
Property, Plant and Equipment
Cost	11,101	10,869
Accumulated depreciation and amortization	(2,136)	(2,081)
Facilities to be retired, net	8	9
Net property, plant and equipment	8,973	8,797
Other Noncurrent Assets
Goodwill	49	49
Other Noncurrent Assets: Regulatory assets	389	392
Operating lease right-of-use assets, net	3	4
Investments in equity method unconsolidated affiliates	78	79
Other	278	272
Total other noncurrent assets	797	796
Total Assets	10,255	10,335
Current Liabilities
Accounts payable	191	345
Accounts payable to affiliated companies	39	51
Notes payable to affiliated companies	343	514
Taxes accrued	61	74
Interest accrued	43	40
Current maturities of long-term debt (includes amounts related to VIEs)	45	45
Regulatory liabilities	122	74
Other	58	81
Total current liabilities	902	1,224
Long-Term Debt (includes amounts related to VIEs)	3,319	3,318
Other Noncurrent Liabilities
Deferred income taxes	897	870
Total noncurrent ARO	27	26
Regulatory liabilities	1,016	1,024
Operating lease liabilities	12	13
Accrued pension and other post-retirement benefit costs	7	7
Other	170	180
Total other noncurrent liabilities	2,129	2,120
Commitments and Contingencies
Equity
Common stock	1,635	1,635
Retained earnings	2,269	2,037
Total Parent stockholders' equity	3,904	3,672
Noncontrolling interests	1	1
Total equity	3,905	3,673
Total Liabilities and Equity	$ 10,255	$ 10,335
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares outstanding (in shares)	100,000,000	100,000,000