Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 308	$ 311
Receivables (net of allowance for doubtful accounts)	719	1,066
Receivables of VIEs (net of allowance for doubtful accounts)	2,320	1,994
Inventory	3,190	3,232
Regulatory assets (includes amounts related to VIEs)	1,637	1,796
Other (includes amounts related to VIEs)	505	764
Total current assets	8,679	9,163
Property, Plant and Equipment
Cost	153,916	147,654
Accumulated depreciation and amortization	(48,185)	(45,773)
Generation facilities to be retired, net	29	246
Net property, plant and equipment	105,760	102,127
Other Noncurrent Assets
Goodwill	19,303	19,303
Regulatory assets (includes amounts related to VIEs)	13,264	13,222
Nuclear decommissioning trust funds	8,363	8,140
Operating lease right-of-use assets, net	1,577	1,658
Investments in equity method unconsolidated affiliates	924	1,936
Other (includes amounts related to VIEs)	3,539	3,289
Total other noncurrent assets	46,970	47,548
Total Assets	161,409	158,838
Current Liabilities
Accounts payable	2,486	3,487
Notes payable and commercial paper	3,425	3,135
Taxes accrued	768	392
Interest accrued	556	565
Current maturities of long-term debt (includes amounts related to VIEs)	4,669	3,141
Asset retirement obligations	742	881
Regulatory liabilities	1,218	784
Other	2,829	2,367
Total current liabilities	16,693	14,752
Long-Term Debt (includes amounts related to VIEs)	56,049	54,985
Other Noncurrent Liabilities
Deferred income taxes	9,170	8,878
Asset retirement obligations	12,912	12,437
Regulatory liabilities	14,546	15,264
Operating lease liabilities	1,379	1,432
Accrued pension and other post-retirement benefit costs	903	934
Investment tax credits	689	624
Other (includes amounts related to VIEs)	1,773	1,581
Total other noncurrent liabilities	41,372	41,150
Commitments and Contingencies
Equity
Common stock	1	1
Additional paid-in capital	41,046	40,881
Retained earnings	3,260	4,108
Accumulated other comprehensive loss	(263)	(130)
Total Duke Energy Corporation stockholders' equity	46,006	46,822
Noncontrolling interests	1,289	1,129
Total equity	47,295	47,951
Total Liabilities and Equity	161,409	158,838
Duke Energy Carolinas
Current Assets
Cash and cash equivalents	23	18
Receivables (net of allowance for doubtful accounts)	177	324
Receivables of VIEs (net of allowance for doubtful accounts)	770	642
Receivables from affiliated companies	64	114
Notes receivable from affiliated companies	65
Inventory	992	996
Regulatory assets (includes amounts related to VIEs)	495	550
Other (includes amounts related to VIEs)	44	21
Total current assets	2,630	2,665
Property, Plant and Equipment
Cost	50,622	48,922
Accumulated depreciation and amortization	(17,406)	(16,525)
Net property, plant and equipment	33,216	32,397
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	3,400	3,360
Nuclear decommissioning trust funds	4,506	4,359
Operating lease right-of-use assets, net	117	123
Other (includes amounts related to VIEs)	1,179	1,149
Total other noncurrent assets	9,202	8,991
Total Assets	45,048	44,053
Current Liabilities
Accounts payable	583	954
Accounts payable to affiliated companies	155	210
Notes payable to affiliated companies		29
Taxes accrued	398	46
Interest accrued	130	115
Current maturities of long-term debt (includes amounts related to VIEs)	751	458
Asset retirement obligations	267	206
Regulatory liabilities	430	255
Other	487	611
Total current liabilities	3,201	2,884
Long-Term Debt (includes amounts related to VIEs)	11,497	11,142
Long-Term Debt Payable to Affiliated Companies	300	300
Other Noncurrent Liabilities
Deferred income taxes	3,915	3,921
Asset retirement obligations	5,507	5,528
Regulatory liabilities	6,243	6,423
Operating lease liabilities	102	102
Accrued pension and other post-retirement benefit costs	76	84
Investment tax credits	237	231
Other (includes amounts related to VIEs)	644	627
Total other noncurrent liabilities	16,724	16,916
Commitments and Contingencies
Equity
Member's equity	13,333	12,818
Accumulated other comprehensive loss	(7)	(7)
Total member's equity	13,326	12,811
Total Liabilities and Equity	45,048	44,053
Progress Energy
Current Assets
Cash and cash equivalents	70	48
Receivables (net of allowance for doubtful accounts)	196	220
Receivables of VIEs (net of allowance for doubtful accounts)	1,071	830
Receivables from affiliated companies	44	76
Notes receivable from affiliated companies		164
Inventory	1,378	1,423
Regulatory assets (includes amounts related to VIEs)	775	946
Other (includes amounts related to VIEs)	81	210
Total current assets	3,615	3,917
Property, Plant and Equipment
Cost	57,152	55,070
Accumulated depreciation and amortization	(18,008)	(17,159)
Generation facilities to be retired, net	29	246
Net property, plant and equipment	39,173	38,157
Other Noncurrent Assets
Goodwill	3,655	3,655
Regulatory assets (includes amounts related to VIEs)	6,270	6,346
Nuclear decommissioning trust funds	3,857	3,782
Operating lease right-of-use assets, net	710	788
Other (includes amounts related to VIEs)	1,212	1,049
Total other noncurrent assets	15,704	15,620
Total Assets	58,492	57,694
Current Liabilities
Accounts payable	795	1,104
Accounts payable to affiliated companies	208	310
Notes payable to affiliated companies	2,159	1,821
Taxes accrued	310	46
Interest accrued	199	228
Current maturities of long-term debt (includes amounts related to VIEs)	1,726	1,577
Asset retirement obligations	297	485
Regulatory liabilities	545	330
Other	756	902
Total current liabilities	6,995	6,803
Long-Term Debt (includes amounts related to VIEs)	17,989	17,907
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	4,508	4,462
Asset retirement obligations	6,058	5,986
Regulatory liabilities	4,809	5,225
Operating lease liabilities	637	697
Accrued pension and other post-retirement benefit costs	474	488
Other (includes amounts related to VIEs)	443	383
Total other noncurrent liabilities	16,929	17,241
Commitments and Contingencies
Equity
Additional paid-in capital	9,143	9,143
Retained earnings	7,296	6,465
Accumulated other comprehensive loss	(13)	(18)
Total Duke Energy Corporation stockholders' equity	16,426	15,590
Noncontrolling interests	3	3
Total equity	16,429	15,593
Total Liabilities and Equity	58,492	57,694
Duke Energy Progress
Current Assets
Cash and cash equivalents	43	22
Receivables (net of allowance for doubtful accounts)	103	123
Receivables of VIEs (net of allowance for doubtful accounts)	559	489
Receivables from affiliated companies	45	52
Inventory	910	934
Regulatory assets (includes amounts related to VIEs)	472	526
Other (includes amounts related to VIEs)	54	60
Total current assets	2,186	2,206
Property, Plant and Equipment
Cost	35,479	34,603
Accumulated depreciation and amortization	(12,548)	(11,915)
Generation facilities to be retired, net	29	246
Net property, plant and equipment	22,960	22,934
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	4,449	4,152
Nuclear decommissioning trust funds	3,189	3,047
Operating lease right-of-use assets, net	357	387
Other (includes amounts related to VIEs)	720	651
Total other noncurrent assets	8,715	8,237
Total Assets	33,861	33,377
Current Liabilities
Accounts payable	372	629
Accounts payable to affiliated companies	144	203
Notes payable to affiliated companies	167	66
Taxes accrued	207	17
Interest accrued	80	110
Current maturities of long-term debt (includes amounts related to VIEs)	603	1,006
Asset retirement obligations	297	485
Regulatory liabilities	436	236
Other	389	478
Total current liabilities	2,695	3,230
Long-Term Debt (includes amounts related to VIEs)	8,605	7,902
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	2,426	2,388
Asset retirement obligations	5,503	5,408
Regulatory liabilities	4,140	4,232
Operating lease liabilities	329	354
Accrued pension and other post-retirement benefit costs	236	238
Investment tax credits	133	137
Other (includes amounts related to VIEs)	88	92
Total other noncurrent liabilities	12,855	12,849
Commitments and Contingencies
Equity
Total member's equity	9,556	9,246
Total Liabilities and Equity	33,861	33,377
Duke Energy Florida
Current Assets
Cash and cash equivalents	19	17
Receivables (net of allowance for doubtful accounts)	91	96
Receivables of VIEs (net of allowance for doubtful accounts)	512	341
Receivables from affiliated companies	3
Notes receivable from affiliated companies		173
Inventory	468	489
Regulatory assets (includes amounts related to VIEs)	303	419
Other (includes amounts related to VIEs)	25	58
Total current assets	1,421	1,593
Property, Plant and Equipment
Cost	21,662	20,457
Accumulated depreciation and amortization	(5,452)	(5,236)
Net property, plant and equipment	16,210	15,221
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	1,821	2,194
Nuclear decommissioning trust funds	668	734
Operating lease right-of-use assets, net	354	401
Other (includes amounts related to VIEs)	341	311
Total other noncurrent assets	3,184	3,640
Total Assets	20,815	20,454
Current Liabilities
Accounts payable	424	474
Accounts payable to affiliated companies	77	131
Notes payable to affiliated companies	66
Taxes accrued	260	43
Interest accrued	73	75
Current maturities of long-term debt (includes amounts related to VIEs)	623	571
Regulatory liabilities	109	94
Other	359	415
Total current liabilities	1,991	1,803
Long-Term Debt (includes amounts related to VIEs)	7,294	7,416
Other Noncurrent Liabilities
Deferred income taxes	2,175	2,179
Asset retirement obligations	555	578
Regulatory liabilities	669	993
Operating lease liabilities	308	343
Accrued pension and other post-retirement benefit costs	207	218
Other (includes amounts related to VIEs)	205	136
Total other noncurrent liabilities	4,119	4,447
Commitments and Contingencies
Equity
Member's equity	7,411	6,789
Accumulated other comprehensive loss		(1)
Total member's equity	7,411	6,788
Total Liabilities and Equity	20,815	20,454
Duke Energy Ohio
Current Assets
Cash and cash equivalents	10	17
Receivables (net of allowance for doubtful accounts)	90	84
Receivables from affiliated companies	57	92
Inventory	130	135
Regulatory assets (includes amounts related to VIEs)	35	49
Other (includes amounts related to VIEs)	13	21
Total current assets	335	398
Property, Plant and Equipment
Cost	10,804	10,241
Accumulated depreciation and amortization	(2,989)	(2,843)
Net property, plant and equipment	7,815	7,398
Other Noncurrent Assets
Goodwill	920	920
Regulatory assets (includes amounts related to VIEs)	597	549
Operating lease right-of-use assets, net	20	21
Other (includes amounts related to VIEs)	62	52
Total other noncurrent assets	1,599	1,542
Total Assets	9,749	9,338
Current Liabilities
Accounts payable	240	288
Accounts payable to affiliated companies	54	68
Notes payable to affiliated companies	85	312
Taxes accrued	193	219
Interest accrued	32	30
Asset retirement obligations	7	1
Regulatory liabilities	66	64
Other	73	75
Total current liabilities	750	1,057
Long-Term Debt (includes amounts related to VIEs)	3,064	2,594
Long-Term Debt Payable to Affiliated Companies	25	25
Other Noncurrent Liabilities
Deferred income taxes	965	922
Asset retirement obligations	84	79
Regulatory liabilities	753	763
Operating lease liabilities	20	21
Accrued pension and other post-retirement benefit costs	104	100
Other (includes amounts related to VIEs)	100	94
Total other noncurrent liabilities	2,026	1,979
Commitments and Contingencies
Equity
Common stock	762	762
Additional paid-in capital	2,776	2,776
Retained earnings	346	145
Total Duke Energy Corporation stockholders' equity	3,884	3,683
Total Liabilities and Equity	9,749	9,338
Duke Energy Indiana
Current Assets
Cash and cash equivalents	15	25
Receivables (net of allowance for doubtful accounts)	48	60
Receivables from affiliated companies	84	79
Inventory	507	517
Regulatory assets (includes amounts related to VIEs)	119	90
Other (includes amounts related to VIEs)	30	60
Total current assets	803	831
Property, Plant and Equipment
Cost	17,223	16,305
Accumulated depreciation and amortization	(5,579)	(5,233)
Net property, plant and equipment	11,644	11,072
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	1,184	1,082
Operating lease right-of-use assets, net	55	57
Other (includes amounts related to VIEs)	228	234
Total other noncurrent assets	1,467	1,373
Total Assets	13,914	13,276
Current Liabilities
Accounts payable	172	201
Accounts payable to affiliated companies	65	87
Notes payable to affiliated companies	83	30
Taxes accrued	110	49
Interest accrued	63	58
Current maturities of long-term debt (includes amounts related to VIEs)	13	503
Asset retirement obligations	170	189
Regulatory liabilities	76	55
Other	98	112
Total current liabilities	850	1,284
Long-Term Debt (includes amounts related to VIEs)	3,941	3,404
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	1,179	1,150
Asset retirement obligations	1,044	643
Regulatory liabilities	1,648	1,685
Operating lease liabilities	53	55
Accrued pension and other post-retirement benefit costs	151	148
Investment tax credits	168	164
Other (includes amounts related to VIEs)	56	18
Total other noncurrent liabilities	4,299	3,863
Commitments and Contingencies
Equity
Total member's equity	4,674	4,575
Total Liabilities and Equity	13,914	13,276
Piedmont Natural Gas
Current Assets
Receivables (net of allowance for doubtful accounts)	93	241
Receivables from affiliated companies	11	10
Inventory	47	72
Regulatory assets (includes amounts related to VIEs)	119	73
Other (includes amounts related to VIEs)	51	28
Total current assets	321	424
Property, Plant and Equipment
Cost	8,882	8,446
Accumulated depreciation and amortization	(1,713)	(1,681)
Net property, plant and equipment	7,169	6,765
Other Noncurrent Assets
Goodwill	49	49
Regulatory assets (includes amounts related to VIEs)	287	290
Operating lease right-of-use assets, net	21	24
Investments in equity method unconsolidated affiliates	86	83
Other (includes amounts related to VIEs)	279	121
Total other noncurrent assets	722	567
Total Assets	8,212	7,756
Current Liabilities
Accounts payable	177	215
Accounts payable to affiliated companies	63	3
Notes payable to affiliated companies	327	476
Taxes accrued	36	24
Interest accrued	37	33
Current maturities of long-term debt (includes amounts related to VIEs)	160
Regulatory liabilities	101	81
Other	59	67
Total current liabilities	960	899
Long-Term Debt (includes amounts related to VIEs)	2,620	2,384
Other Noncurrent Liabilities
Deferred income taxes	775	708
Asset retirement obligations	17	17
Regulatory liabilities	1,070	1,131
Operating lease liabilities	20	23
Accrued pension and other post-retirement benefit costs	7	3
Other (includes amounts related to VIEs)	146	148
Total other noncurrent liabilities	2,035	2,030
Commitments and Contingencies
Equity
Common stock	1,310	1,310
Retained earnings	1,287	1,133
Total Duke Energy Corporation stockholders' equity	2,597	2,443
Total Liabilities and Equity	8,212	7,756
Preferred stock, Series A
Equity
Preferred stock	973	973
Preferred stock, Series B
Equity
Preferred stock	$ 989	$ 989