Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Current Assets
Cash and cash equivalents	$ 341	$ 311
Receivables (net of allowance for doubtful accounts)	753	1,066
Receivables of VIEs (net of allowance for doubtful accounts)	2,049	1,994
Inventory	3,289	3,232
Regulatory assets (includes amounts related to VIEs)	1,774	1,796
Other (includes amounts related to VIEs)	1,031	764
Total current assets	9,237	9,163
Property, Plant and Equipment
Cost	151,592	147,654
Accumulated depreciation and amortization	(47,295)	(45,773)
Generation facilities to be retired, net	28	246
Net property, plant and equipment	104,325	102,127
Other Noncurrent Assets
Goodwill	19,303	19,303
Regulatory assets (includes amounts related to VIEs)	13,285	13,222
Nuclear decommissioning trust funds	8,000	8,140
Operating lease right-of-use assets, net	1,580	1,658
Investments in equity method unconsolidated affiliates	861	1,936
Other (includes amounts related to VIEs)	3,458	3,289
Total other noncurrent assets	46,487	47,548
Total Assets	160,049	158,838
Current Liabilities
Accounts payable	2,398	3,487
Notes payable and commercial paper	4,785	3,135
Taxes accrued	657	392
Interest accrued	569	565
Current maturities of long-term debt (includes amounts related to VIEs)	3,756	3,141
Asset retirement obligations	729	881
Regulatory liabilities	898	784
Other	2,898	2,367
Total current liabilities	16,690	14,752
Long-Term Debt (includes amounts related to VIEs)	56,143	54,985
Other Noncurrent Liabilities
Deferred income taxes	8,979	8,878
Asset retirement obligations	12,539	12,437
Regulatory liabilities	14,553	15,264
Operating lease liabilities	1,377	1,432
Accrued pension and other post-retirement benefit costs	911	934
Investment tax credits	683	624
Other (includes amounts related to VIEs)	1,563	1,581
Total other noncurrent liabilities	40,605	41,150
Commitments and Contingencies
Equity
Common stock	1	1
Additional paid-in capital	40,997	40,881
Retained earnings	2,707	4,108
Accumulated other comprehensive loss	(183)	(130)
Total Duke Energy Corporation stockholders' equity	45,484	46,822
Noncontrolling interests	1,127	1,129
Total equity	46,611	47,951
Total Liabilities and Equity	160,049	158,838
Duke Energy Carolinas
Current Assets
Cash and cash equivalents	24	18
Receivables (net of allowance for doubtful accounts)	255	324
Receivables of VIEs (net of allowance for doubtful accounts)	675	642
Receivables from affiliated companies	78	114
Inventory	1,080	996
Regulatory assets (includes amounts related to VIEs)	490	550
Other (includes amounts related to VIEs)	19	21
Total current assets	2,621	2,665
Property, Plant and Equipment
Cost	50,068	48,922
Accumulated depreciation and amortization	(17,098)	(16,525)
Net property, plant and equipment	32,970	32,397
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	3,440	3,360
Nuclear decommissioning trust funds	4,265	4,359
Operating lease right-of-use assets, net	125	123
Other (includes amounts related to VIEs)	1,158	1,149
Total other noncurrent assets	8,988	8,991
Total Assets	44,579	44,053
Current Liabilities
Accounts payable	615	954
Accounts payable to affiliated companies	147	210
Notes payable to affiliated companies	131	29
Taxes accrued	166	46
Interest accrued	127	115
Current maturities of long-term debt (includes amounts related to VIEs)	508	458
Asset retirement obligations	194	206
Regulatory liabilities	293	255
Other	488	611
Total current liabilities	2,669	2,884
Long-Term Debt (includes amounts related to VIEs)	11,713	11,142
Long-Term Debt Payable to Affiliated Companies	300	300
Other Noncurrent Liabilities
Deferred income taxes	4,004	3,921
Asset retirement obligations	5,566	5,528
Regulatory liabilities	6,232	6,423
Operating lease liabilities	106	102
Accrued pension and other post-retirement benefit costs	77	84
Investment tax credits	229	231
Other (includes amounts related to VIEs)	611	627
Total other noncurrent liabilities	16,825	16,916
Equity
Member's equity	13,079	12,818
Accumulated other comprehensive loss	(7)	(7)
Total member's equity	13,072	12,811
Total Liabilities and Equity	44,579	44,053
Progress Energy
Current Assets
Cash and cash equivalents	78	48
Receivables (net of allowance for doubtful accounts)	153	220
Receivables of VIEs (net of allowance for doubtful accounts)	920	830
Receivables from affiliated companies	42	76
Notes receivable from affiliated companies		164
Inventory	1,466	1,423
Regulatory assets (includes amounts related to VIEs)	957	946
Other (includes amounts related to VIEs)	145	210
Total current assets	3,761	3,917
Property, Plant and Equipment
Cost	56,420	55,070
Accumulated depreciation and amortization	(17,704)	(17,159)
Generation facilities to be retired, net	28	246
Net property, plant and equipment	38,744	38,157
Other Noncurrent Assets
Goodwill	3,655	3,655
Regulatory assets (includes amounts related to VIEs)	6,308	6,346
Nuclear decommissioning trust funds	3,734	3,782
Operating lease right-of-use assets, net	737	788
Other (includes amounts related to VIEs)	1,164	1,049
Total other noncurrent assets	15,598	15,620
Total Assets	58,103	57,694
Current Liabilities
Accounts payable	675	1,104
Accounts payable to affiliated companies	222	310
Notes payable to affiliated companies	2,373	1,821
Taxes accrued	201	46
Interest accrued	213	228
Current maturities of long-term debt (includes amounts related to VIEs)	1,829	1,577
Asset retirement obligations	357	485
Regulatory liabilities	388	330
Other	847	902
Total current liabilities	7,105	6,803
Long-Term Debt (includes amounts related to VIEs)	17,625	17,907
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	4,560	4,462
Asset retirement obligations	6,038	5,986
Regulatory liabilities	4,813	5,225
Operating lease liabilities	662	697
Accrued pension and other post-retirement benefit costs	480	488
Other (includes amounts related to VIEs)	449	383
Total other noncurrent liabilities	17,002	17,241
Equity
Additional paid-in capital	9,143	9,143
Retained earnings	7,090	6,465
Accumulated other comprehensive loss	(15)	(18)
Total Duke Energy Corporation stockholders' equity	16,218	15,590
Noncontrolling interests	3	3
Total equity	16,221	15,593
Total Liabilities and Equity	58,103	57,694
Duke Energy Progress
Current Assets
Cash and cash equivalents	51	22
Receivables (net of allowance for doubtful accounts)	77	123
Receivables of VIEs (net of allowance for doubtful accounts)	451	489
Receivables from affiliated companies	42	52
Inventory	980	934
Regulatory assets (includes amounts related to VIEs)	526	526
Other (includes amounts related to VIEs)	37	60
Total current assets	2,164	2,206
Property, Plant and Equipment
Cost	35,120	34,603
Accumulated depreciation and amortization	(12,303)	(11,915)
Generation facilities to be retired, net	28	246
Net property, plant and equipment	22,845	22,934
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	4,448	4,152
Nuclear decommissioning trust funds	3,023	3,047
Operating lease right-of-use assets, net	367	387
Other (includes amounts related to VIEs)	688	651
Total other noncurrent assets	8,526	8,237
Total Assets	33,535	33,377
Current Liabilities
Accounts payable	287	629
Accounts payable to affiliated companies	153	203
Notes payable to affiliated companies	257	66
Taxes accrued	88	17
Interest accrued	102	110
Current maturities of long-term debt (includes amounts related to VIEs)	1,006	1,006
Asset retirement obligations	357	485
Regulatory liabilities	306	236
Other	468	478
Total current liabilities	3,024	3,230
Long-Term Debt (includes amounts related to VIEs)	7,907	7,902
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	2,485	2,388
Asset retirement obligations	5,457	5,408
Regulatory liabilities	4,087	4,232
Operating lease liabilities	339	354
Accrued pension and other post-retirement benefit costs	237	238
Investment tax credits	134	137
Other (includes amounts related to VIEs)	105	92
Total other noncurrent liabilities	12,844	12,849
Equity
Total member's equity	9,610	9,246
Total Liabilities and Equity	33,535	33,377
Duke Energy Florida
Current Assets
Cash and cash equivalents	20	17
Receivables (net of allowance for doubtful accounts)	72	96
Receivables of VIEs (net of allowance for doubtful accounts)	469	341
Receivables from affiliated companies	2
Notes receivable from affiliated companies		173
Inventory	486	489
Regulatory assets (includes amounts related to VIEs)	432	419
Other (includes amounts related to VIEs)	44	58
Total current assets	1,525	1,593
Property, Plant and Equipment
Cost	21,290	20,457
Accumulated depreciation and amortization	(5,394)	(5,236)
Net property, plant and equipment	15,896	15,221
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	1,860	2,194
Nuclear decommissioning trust funds	711	734
Operating lease right-of-use assets, net	370	401
Other (includes amounts related to VIEs)	327	311
Total other noncurrent assets	3,268	3,640
Total Assets	20,689	20,454
Current Liabilities
Accounts payable	388	474
Accounts payable to affiliated companies	80	131
Notes payable to affiliated companies	232
Taxes accrued	177	43
Interest accrued	67	75
Current maturities of long-term debt (includes amounts related to VIEs)	323	571
Regulatory liabilities	82	94
Other	372	415
Total current liabilities	1,721	1,803
Long-Term Debt (includes amounts related to VIEs)	7,628	7,416
Other Noncurrent Liabilities
Deferred income taxes	2,181	2,179
Asset retirement obligations	581	578
Regulatory liabilities	726	993
Operating lease liabilities	323	343
Accrued pension and other post-retirement benefit costs	211	218
Other (includes amounts related to VIEs)	194	136
Total other noncurrent liabilities	4,216	4,447
Equity
Member's equity	7,125	6,789
Accumulated other comprehensive loss	(1)	(1)
Total member's equity	7,124	6,788
Total Liabilities and Equity	20,689	20,454
Duke Energy Ohio
Current Assets
Cash and cash equivalents	8	17
Receivables (net of allowance for doubtful accounts)	83	84
Receivables from affiliated companies	47	92
Notes receivable from affiliated companies	35
Inventory	129	135
Regulatory assets (includes amounts related to VIEs)	32	49
Other (includes amounts related to VIEs)	14	21
Total current assets	348	398
Property, Plant and Equipment
Cost	10,591	10,241
Accumulated depreciation and amortization	(2,923)	(2,843)
Net property, plant and equipment	7,668	7,398
Other Noncurrent Assets
Goodwill	920	920
Regulatory assets (includes amounts related to VIEs)	593	549
Operating lease right-of-use assets, net	21	21
Other (includes amounts related to VIEs)	59	52
Total other noncurrent assets	1,593	1,542
Total Assets	9,609	9,338
Current Liabilities
Accounts payable	249	288
Accounts payable to affiliated companies	58	68
Notes payable to affiliated companies	79	312
Taxes accrued	210	219
Interest accrued	31	30
Asset retirement obligations	5	1
Regulatory liabilities	69	64
Other	71	75
Total current liabilities	772	1,057
Long-Term Debt (includes amounts related to VIEs)	2,994	2,594
Long-Term Debt Payable to Affiliated Companies	25	25
Other Noncurrent Liabilities
Deferred income taxes	958	922
Asset retirement obligations	77	79
Regulatory liabilities	751	763
Operating lease liabilities	20	21
Accrued pension and other post-retirement benefit costs	102	100
Other (includes amounts related to VIEs)	96	94
Total other noncurrent liabilities	2,004	1,979
Equity
Common stock	762	762
Additional paid-in capital	2,776	2,776
Retained earnings	276	145
Total Duke Energy Corporation stockholders' equity	3,814	3,683
Total Liabilities and Equity	9,609	9,338
Duke Energy Indiana
Current Assets
Cash and cash equivalents	16	25
Receivables (net of allowance for doubtful accounts)	44	60
Receivables from affiliated companies	59	79
Notes receivable from affiliated companies	425
Inventory	489	517
Regulatory assets (includes amounts related to VIEs)	90	90
Other (includes amounts related to VIEs)	45	60
Total current assets	1,168	831
Property, Plant and Equipment
Cost	16,736	16,305
Accumulated depreciation and amortization	(5,472)	(5,233)
Net property, plant and equipment	11,264	11,072
Other Noncurrent Assets
Regulatory assets (includes amounts related to VIEs)	1,113	1,082
Operating lease right-of-use assets, net	56	57
Other (includes amounts related to VIEs)	251	234
Total other noncurrent assets	1,420	1,373
Total Assets	13,852	13,276
Current Liabilities
Accounts payable	204	201
Accounts payable to affiliated companies	74	87
Notes payable to affiliated companies		30
Taxes accrued	46	49
Interest accrued	64	58
Current maturities of long-term debt (includes amounts related to VIEs)	503	503
Asset retirement obligations	172	189
Regulatory liabilities	51	55
Other	104	112
Total current liabilities	1,218	1,284
Long-Term Debt (includes amounts related to VIEs)	3,950	3,404
Long-Term Debt Payable to Affiliated Companies	150	150
Other Noncurrent Liabilities
Deferred income taxes	1,195	1,150
Asset retirement obligations	643	643
Regulatory liabilities	1,655	1,685
Operating lease liabilities	54	55
Accrued pension and other post-retirement benefit costs	150	148
Investment tax credits	170	164
Other (includes amounts related to VIEs)	12	18
Total other noncurrent liabilities	3,879	3,863
Equity
Total member's equity	4,655	4,575
Total Liabilities and Equity	13,852	13,276
Piedmont Natural Gas
Current Assets
Receivables (net of allowance for doubtful accounts)	102	241
Receivables from affiliated companies	14	10
Inventory	29	72
Regulatory assets (includes amounts related to VIEs)	118	73
Other (includes amounts related to VIEs)	54	28
Total current assets	317	424
Property, Plant and Equipment
Cost	8,701	8,446
Accumulated depreciation and amortization	(1,715)	(1,681)
Net property, plant and equipment	6,986	6,765
Other Noncurrent Assets
Goodwill	49	49
Regulatory assets (includes amounts related to VIEs)	280	290
Operating lease right-of-use assets, net	22	24
Investments in equity method unconsolidated affiliates	85	83
Other (includes amounts related to VIEs)	278	121
Total other noncurrent assets	714	567
Total Assets	8,017	7,756
Current Liabilities
Accounts payable	138	215
Accounts payable to affiliated companies	36	3
Notes payable to affiliated companies	200	476
Taxes accrued	28	24
Interest accrued	34	33
Current maturities of long-term debt (includes amounts related to VIEs)	160
Regulatory liabilities	97	81
Other	56	67
Total current liabilities	749	899
Long-Term Debt (includes amounts related to VIEs)	2,619	2,384
Other Noncurrent Liabilities
Deferred income taxes	763	708
Asset retirement obligations	17	17
Regulatory liabilities	1,078	1,131
Operating lease liabilities	21	23
Accrued pension and other post-retirement benefit costs	7	3
Other (includes amounts related to VIEs)	141	148
Total other noncurrent liabilities	2,027	2,030
Equity
Common stock	1,310	1,310
Retained earnings	1,312	1,133
Total Duke Energy Corporation stockholders' equity	2,622	2,443
Total Liabilities and Equity	8,017	7,756
Preferred stock, Series A
Equity
Preferred stock	973	973
Preferred stock, Series B
Equity
Preferred stock	$ 989	$ 989