Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 336	$ 442
Receivables (net of allowance for doubtful accounts)	646	962
Receivables of VIEs (net of allowance for doubtful accounts)	2,153	2,172
Inventory	3,189	3,084
Regulatory assets (includes amounts related to VIEs)	1,918	2,005
Other (includes amounts related to VIEs)	1,267	1,049
Total current assets	9,509	9,714
Property, Plant and Equipment
Cost	141,363	134,458
Accumulated depreciation and amortization	(44,482)	(43,126)
Generation facilities to be retired, net	317	362
Net property, plant and equipment	97,198	91,694
Operating lease right-of-use assets, net	1,735
Other Noncurrent Assets
Goodwill	19,303	19,303
Regulatory assets	13,393	13,617
Nuclear decommissioning trust funds	7,621	6,720
Investments in equity method unconsolidated affiliates	1,715	1,409
Other (includes amounts related to VIEs)	2,975	2,935
Total other noncurrent assets	46,742	43,984
Total Assets	153,449	145,392
Current Liabilities
Accounts payable	2,512	3,487
Notes payable and commercial paper	3,793	3,410
Taxes accrued	521	577
Interest accrued	564	559
Current maturities of long-term debt (includes amounts related to VIEs)	2,698	3,406
Asset retirement obligations	739	919
Regulatory liabilities	600	598
Other	2,020	2,085
Total current liabilities	13,447	15,041
Long-Term Debt (includes amounts related to VIEs)	54,342	51,123
Operating lease liabilities	1,502
Other Noncurrent Liabilities
Deferred income taxes	8,532	7,806
Asset retirement obligations	11,889	9,548
Regulatory liabilities	15,294	14,834
Accrued pension and other post-retirement benefit costs	959	988
Investment tax credits	569	568
Other (includes amounts related to VIEs)	1,583	1,650
Total other noncurrent liabilities	40,328	35,394
Commitments and Contingencies
Equity
Preferred stock	973
Common stock	1	1
Additional paid-in capital	40,885	40,795
Retained earnings	3,502	3,113
Accumulated other comprehensive loss	(148)	(92)
Total Duke Energy Corporation stockholders' equity	45,213	43,817
Noncontrolling interests	119	17
Total equity	45,332	43,834
Total Liabilities and Equity	153,449	145,392
Duke Energy Carolinas [Member]
Current Assets
Cash and cash equivalents	15	33
Receivables (net of allowance for doubtful accounts)	164	219
Receivables of VIEs (net of allowance for doubtful accounts)	671	699
Receivables from affiliated companies	101	182
Inventory	1,025	948
Regulatory assets (includes amounts related to VIEs)	605	520
Other (includes amounts related to VIEs)	17	72
Total current assets	2,598	2,673
Property, Plant and Equipment
Cost	47,249	44,741
Accumulated depreciation and amortization	(16,047)	(15,496)
Net property, plant and equipment	31,202	29,245
Operating lease right-of-use assets, net	141
Other Noncurrent Assets
Regulatory assets	3,392	3,457
Nuclear decommissioning trust funds	4,059	3,558
Other (includes amounts related to VIEs)	1,085	1,027
Total other noncurrent assets	8,677	8,042
Total Assets	42,477	39,960
Current Liabilities
Accounts payable	640	988
Accounts payable to affiliated companies	189	230
Notes payable to affiliated companies	804	439
Taxes accrued	209	171
Interest accrued	106	102
Current maturities of long-term debt (includes amounts related to VIEs)	456	6
Asset retirement obligations	203	290
Regulatory liabilities	191	199
Other	499	571
Total current liabilities	3,297	2,996
Long-Term Debt (includes amounts related to VIEs)	10,208	10,633
Long-Term Debt Payable to Affiliated Companies	300	300
Operating lease liabilities	117
Other Noncurrent Liabilities
Deferred income taxes	3,779	3,689
Asset retirement obligations	5,139	3,659
Regulatory liabilities	6,392	5,999
Accrued pension and other post-retirement benefit costs	90	99
Investment tax credits	234	231
Other (includes amounts related to VIEs)	645	671
Total other noncurrent liabilities	16,396	14,348
Equity
Member's equity	12,283	11,689
Accumulated other comprehensive loss	(7)	(6)
Total member's equity	12,276	11,683
Total Liabilities and Equity	42,477	39,960
Progress Energy [Member]
Current Assets
Cash and cash equivalents	51	67
Receivables (net of allowance for doubtful accounts)	139	220
Receivables of VIEs (net of allowance for doubtful accounts)	998	909
Receivables from affiliated companies	49	168
Inventory	1,480	1,459
Regulatory assets (includes amounts related to VIEs)	1,024	1,137
Other (includes amounts related to VIEs)	107	125
Total current assets	3,848	4,085
Property, Plant and Equipment
Cost	52,758	50,260
Accumulated depreciation and amortization	(16,808)	(16,398)
Generation facilities to be retired, net	317	362
Net property, plant and equipment	36,267	34,224
Operating lease right-of-use assets, net	839
Other Noncurrent Assets
Goodwill	3,655	3,655
Regulatory assets	6,423	6,564
Nuclear decommissioning trust funds	3,562	3,162
Other (includes amounts related to VIEs)	982	974
Total other noncurrent assets	15,461	14,355
Total Assets	55,576	52,664
Current Liabilities
Accounts payable	720	1,172
Accounts payable to affiliated companies	235	360
Notes payable to affiliated companies	1,920	1,235
Taxes accrued	191	109
Interest accrued	226	246
Current maturities of long-term debt (includes amounts related to VIEs)	1,026	1,672
Asset retirement obligations	416	514
Regulatory liabilities	250	280
Other	863	821
Total current liabilities	5,847	6,409
Long-Term Debt (includes amounts related to VIEs)	18,023	17,089
Long-Term Debt Payable to Affiliated Companies	150	150
Operating lease liabilities	747
Other Noncurrent Liabilities
Deferred income taxes	4,141	3,941
Asset retirement obligations	5,777	4,897
Regulatory liabilities	5,191	5,049
Accrued pension and other post-retirement benefit costs	509	521
Other (includes amounts related to VIEs)	352	351
Total other noncurrent liabilities	16,717	14,759
Equity
Additional paid-in capital	9,143	9,143
Retained earnings	5,715	5,131
Accumulated other comprehensive loss	(21)	(20)
Total Duke Energy Corporation stockholders' equity	14,837	14,254
Noncontrolling interests	2	3
Total equity	14,839	14,257
Total Liabilities and Equity	55,576	52,664
Duke Energy Progress [Member]
Current Assets
Cash and cash equivalents	28	23
Receivables (net of allowance for doubtful accounts)	53	75
Receivables of VIEs (net of allowance for doubtful accounts)	518	547
Receivables from affiliated companies	40	23
Inventory	980	954
Regulatory assets (includes amounts related to VIEs)	572	703
Other (includes amounts related to VIEs)	34	62
Total current assets	2,225	2,387
Property, Plant and Equipment
Cost	33,288	31,459
Accumulated depreciation and amortization	(11,728)	(11,423)
Generation facilities to be retired, net	317	362
Net property, plant and equipment	21,877	20,398
Operating lease right-of-use assets, net	407
Other Noncurrent Assets
Regulatory assets	4,124	4,111
Nuclear decommissioning trust funds	2,833	2,503
Other (includes amounts related to VIEs)	586	612
Total other noncurrent assets	7,950	7,226
Total Assets	32,052	30,011
Current Liabilities
Accounts payable	315	660
Accounts payable to affiliated companies	182	278
Notes payable to affiliated companies	127	294
Taxes accrued	106	53
Interest accrued	110	116
Current maturities of long-term debt (includes amounts related to VIEs)	6	603
Asset retirement obligations	413	509
Regulatory liabilities	167	178
Other	395	408
Total current liabilities	1,821	3,099
Long-Term Debt (includes amounts related to VIEs)	8,893	7,451
Long-Term Debt Payable to Affiliated Companies	150	150
Operating lease liabilities	377
Other Noncurrent Liabilities
Deferred income taxes	2,181	2,119
Asset retirement obligations	5,203	4,311
Regulatory liabilities	4,150	3,955
Accrued pension and other post-retirement benefit costs	232	237
Investment tax credits	141	142
Other (includes amounts related to VIEs)	91	106
Total other noncurrent liabilities	12,375	10,870
Equity
Total member's equity	8,813	8,441
Total Liabilities and Equity	32,052	30,011
Duke Energy Florida [Member]
Current Assets
Cash and cash equivalents	16	36
Receivables (net of allowance for doubtful accounts)	84	143
Receivables of VIEs (net of allowance for doubtful accounts)	480	362
Receivables from affiliated companies	18	28
Inventory	499	504
Regulatory assets (includes amounts related to VIEs)	452	434
Other (includes amounts related to VIEs)	46	46
Total current assets	1,595	1,553
Property, Plant and Equipment
Cost	19,461	18,792
Accumulated depreciation and amortization	(5,073)	(4,968)
Net property, plant and equipment	14,388	13,824
Operating lease right-of-use assets, net	432
Other Noncurrent Assets
Regulatory assets	2,299	2,454
Nuclear decommissioning trust funds	729	659
Other (includes amounts related to VIEs)	311	311
Total other noncurrent assets	3,771	3,424
Total Assets	19,754	18,801
Current Liabilities
Accounts payable	403	511
Accounts payable to affiliated companies	62	91
Notes payable to affiliated companies	477	108
Taxes accrued	148	74
Interest accrued	70	75
Current maturities of long-term debt (includes amounts related to VIEs)	671	270
Asset retirement obligations	3	5
Regulatory liabilities	83	102
Other	461	406
Total current liabilities	2,378	1,642
Long-Term Debt (includes amounts related to VIEs)	6,542	7,051
Operating lease liabilities	370
Other Noncurrent Liabilities
Deferred income taxes	2,105	1,986
Asset retirement obligations	574	586
Regulatory liabilities	1,040	1,094
Accrued pension and other post-retirement benefit costs	248	254
Other (includes amounts related to VIEs)	104	93
Total other noncurrent liabilities	4,441	4,013
Equity
Member's equity	6,394	6,097
Accumulated other comprehensive loss	(1)	(2)
Total member's equity	6,393	6,095
Total Liabilities and Equity	19,754	18,801
Duke Energy Ohio [Member]
Current Assets
Cash and cash equivalents	8	21
Receivables (net of allowance for doubtful accounts)	80	102
Receivables from affiliated companies	50	114
Inventory	124	126
Regulatory assets (includes amounts related to VIEs)	47	33
Other (includes amounts related to VIEs)	32	24
Total current assets	341	420
Property, Plant and Equipment
Cost	9,776	9,360
Accumulated depreciation and amortization	(2,761)	(2,717)
Net property, plant and equipment	7,015	6,643
Operating lease right-of-use assets, net	22
Other Noncurrent Assets
Goodwill	920	920
Regulatory assets	545	531
Other (includes amounts related to VIEs)	46	41
Total other noncurrent assets	1,533	1,492
Total Assets	8,889	8,555
Current Liabilities
Accounts payable	257	316
Accounts payable to affiliated companies	78	78
Notes payable to affiliated companies	203	274
Taxes accrued	135	202
Interest accrued	31	22
Current maturities of long-term debt (includes amounts related to VIEs)	100	551
Asset retirement obligations	6	6
Regulatory liabilities	67	57
Other	76	74
Total current liabilities	953	1,580
Long-Term Debt (includes amounts related to VIEs)	2,384	1,589
Long-Term Debt Payable to Affiliated Companies	25	25
Operating lease liabilities	21
Other Noncurrent Liabilities
Deferred income taxes	872	817
Asset retirement obligations	83	87
Regulatory liabilities	802	840
Accrued pension and other post-retirement benefit costs	94	79
Other (includes amounts related to VIEs)	94	93
Total other noncurrent liabilities	1,966	1,916
Equity
Common stock	762	762
Additional paid-in capital	2,776	2,776
Retained earnings	23	(93)
Total Duke Energy Corporation stockholders' equity	3,561	3,445
Total Liabilities and Equity	8,889	8,555
Duke Energy Indiana [Member]
Current Assets
Cash and cash equivalents	12	24
Receivables (net of allowance for doubtful accounts)	49	52
Receivables from affiliated companies	83	122
Inventory	463	422
Regulatory assets (includes amounts related to VIEs)	130	175
Other (includes amounts related to VIEs)	42	35
Total current assets	779	830
Property, Plant and Equipment
Cost	15,831	15,443
Accumulated depreciation and amortization	(5,104)	(4,914)
Net property, plant and equipment	10,727	10,529
Operating lease right-of-use assets, net	60
Other Noncurrent Assets
Regulatory assets	1,038	982
Other (includes amounts related to VIEs)	203	194
Total other noncurrent assets	1,301	1,176
Total Assets	12,807	12,535
Current Liabilities
Accounts payable	224	200
Accounts payable to affiliated companies	66	83
Notes payable to affiliated companies	165	167
Taxes accrued	25	43
Interest accrued	59	58
Current maturities of long-term debt (includes amounts related to VIEs)	3	63
Asset retirement obligations	115	109
Regulatory liabilities	24	25
Other	120	107
Total current liabilities	801	855
Long-Term Debt (includes amounts related to VIEs)	3,570	3,569
Long-Term Debt Payable to Affiliated Companies	150	150
Operating lease liabilities	56
Other Noncurrent Liabilities
Deferred income taxes	1,084	1,009
Asset retirement obligations	604	613
Regulatory liabilities	1,693	1,722
Accrued pension and other post-retirement benefit costs	142	115
Investment tax credits	147	147
Other (includes amounts related to VIEs)	14	16
Total other noncurrent liabilities	3,740	3,622
Equity
Total member's equity	4,546	4,339
Total Liabilities and Equity	12,807	12,535
Piedmont Natural Gas [Member]
Current Assets
Receivables (net of allowance for doubtful accounts)	100	266
Receivables from affiliated companies	17	22
Notes receivable from affiliated companies	16
Inventory	33	70
Regulatory assets (includes amounts related to VIEs)	30	54
Other (includes amounts related to VIEs)	57	19
Total current assets	253	431
Property, Plant and Equipment
Cost	7,966	7,486
Accumulated depreciation and amortization	(1,620)	(1,575)
Net property, plant and equipment	6,346	5,911
Operating lease right-of-use assets, net	26
Other Noncurrent Assets
Goodwill	49	49
Regulatory assets	280	303
Investments in equity method unconsolidated affiliates	81	64
Other (includes amounts related to VIEs)	60	52
Total other noncurrent assets	496	468
Total Assets	7,095	6,810
Current Liabilities
Accounts payable	156	203
Accounts payable to affiliated companies	52	38
Notes payable to affiliated companies		198
Taxes accrued	23	84
Interest accrued	33	31
Current maturities of long-term debt (includes amounts related to VIEs)		350
Regulatory liabilities	67	37
Other	62	58
Total current liabilities	393	999
Long-Term Debt (includes amounts related to VIEs)	2,384	1,788
Operating lease liabilities	25
Other Noncurrent Liabilities
Deferred income taxes	593	551
Asset retirement obligations	19	19
Regulatory liabilities	1,174	1,181
Accrued pension and other post-retirement benefit costs	6	4
Other (includes amounts related to VIEs)	145	177
Total other noncurrent liabilities	1,962	1,932
Equity
Common stock	1,310	1,160
Retained earnings	1,046	931
Total Duke Energy Corporation stockholders' equity	2,356	2,091
Total Liabilities and Equity	$ 7,095	$ 6,810

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

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Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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The period end amount for a type of inventory held by the utility in a schedule of inventories.

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Period end book value of accumulated depreciation on property, plant and equipment (PPE) that is owned by the regulated operations of the public utility.

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Period end amount of total net PPE.

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Period end amount of total gross PPE.

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Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost.

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Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer.

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The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period.

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The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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