Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 377	$ 442
Receivables (net of allowance for doubtful accounts)	775	962
Receivables of VIEs (net of allowance for doubtful accounts)	1,981	2,172
Inventory	3,102	3,084
Regulatory assets (includes amounts related to VIEs)	1,957	2,005
Other (includes amounts related to VIEs)	976	1,049
Total current assets	9,168	9,714
Property, Plant and Equipment
Cost	139,377	134,458
Accumulated depreciation and amortization	(43,992)	(43,126)
Generation facilities to be retired, net	336	362
Net property, plant and equipment	95,721	91,694
Operating Lease Right-of-Use Assets, net	1,698
Other Noncurrent Assets
Goodwill	19,303	19,303
Regulatory assets	13,301	13,617
Nuclear decommissioning trust funds	7,374	6,720
Investments in equity method unconsolidated affiliates	1,602	1,409
Other (includes amounts related to VIEs)	2,969	2,935
Total other noncurrent assets	44,549	43,984
Total Assets	151,136	145,392
Current Liabilities
Accounts payable	2,538	3,487
Notes payable and commercial paper	3,029	3,410
Taxes accrued	470	577
Interest accrued	544	559
Current maturities of long-term debt (includes amounts related to VIEs)	2,501	3,406
Asset retirement obligations	779	919
Regulatory liabilities	611	598
Other	1,810	2,085
Total current liabilities	12,282	15,041
Long-Term Debt (includes amounts related to VIEs)	53,681	51,123
Operating Lease Liabilities	1,488
Other Noncurrent Liabilities
Deferred income taxes	8,040	7,806
Asset retirement obligations	12,256	9,548
Regulatory liabilities	15,212	14,834
Accrued pension and other post-retirement benefit costs	974	988
Investment tax credits	571	568
Other (includes amounts related to VIEs)	1,587	1,650
Total other noncurrent liabilities	38,640	35,394
Commitments and Contingencies
Equity
Preferred stock	974
Common stock	1	1
Additional paid-in capital	40,823	40,795
Retained earnings	3,360	3,113
Accumulated other comprehensive loss	(128)	(92)
Total Duke Energy Corporation stockholders' equity	45,030	43,817
Noncontrolling interests	15	17
Total equity	45,045	43,834
Total Liabilities and Equity	151,136	145,392
Duke Energy Carolinas [Member]
Current Assets
Cash and cash equivalents		33
Receivables (net of allowance for doubtful accounts)	166	219
Receivables of VIEs (net of allowance for doubtful accounts)	630	699
Receivables from affiliated companies	88	182
Inventory	1,007	948
Regulatory assets (includes amounts related to VIEs)	560	520
Other (includes amounts related to VIEs)	31	72
Total current assets	2,482	2,673
Property, Plant and Equipment
Cost	46,929	44,741
Accumulated depreciation and amortization	(15,899)	(15,496)
Net property, plant and equipment	31,030	29,245
Operating Lease Right-of-Use Assets, net	146
Other Noncurrent Assets
Regulatory assets	3,429	3,457
Nuclear decommissioning trust funds	3,913	3,558
Other (includes amounts related to VIEs)	1,027	1,027
Total other noncurrent assets	8,369	8,042
Total Assets	42,027	39,960
Current Liabilities
Accounts payable	643	988
Accounts payable to affiliated companies	248	230
Notes payable to affiliated companies	745	439
Taxes accrued	80	171
Interest accrued	134	102
Current maturities of long-term debt (includes amounts related to VIEs)	7	6
Asset retirement obligations	209	290
Regulatory liabilities	200	199
Other	415	571
Total current liabilities	2,681	2,996
Long-Term Debt (includes amounts related to VIEs)	10,658	10,633
Long-Term Debt Payable to Affiliated Companies	300	300
Operating Lease Liabilities	123
Other Noncurrent Liabilities
Deferred income taxes	3,769	3,689
Asset retirement obligations	5,219	3,659
Regulatory liabilities	6,325	5,999
Accrued pension and other post-retirement benefit costs	97	99
Investment tax credits	235	231
Other (includes amounts related to VIEs)	645	671
Total other noncurrent liabilities	16,290	14,348
Equity
Member's equity	11,982	11,689
Accumulated other comprehensive loss	(7)	(6)
Total member's equity	11,975	11,683
Total Liabilities and Equity	42,027	39,960
Progress Energy [Member]
Current Assets
Cash and cash equivalents	45	67
Receivables (net of allowance for doubtful accounts)	128	220
Receivables of VIEs (net of allowance for doubtful accounts)	817	909
Receivables from affiliated companies	46	168
Notes receivable from affiliated companies	31
Inventory	1,464	1,459
Regulatory assets (includes amounts related to VIEs)	1,076	1,137
Other (includes amounts related to VIEs)	143	125
Total current assets	3,750	4,085
Property, Plant and Equipment
Cost	52,309	50,260
Accumulated depreciation and amortization	(16,646)	(16,398)
Generation facilities to be retired, net	336	362
Net property, plant and equipment	35,999	34,224
Operating Lease Right-of-Use Assets, net	835
Other Noncurrent Assets
Goodwill	3,655	3,655
Regulatory assets	6,358	6,564
Nuclear decommissioning trust funds	3,461	3,162
Other (includes amounts related to VIEs)	1,029	974
Total other noncurrent assets	14,503	14,355
Total Assets	55,087	52,664
Current Liabilities
Accounts payable	781	1,172
Accounts payable to affiliated companies	266	360
Notes payable to affiliated companies	1,605	1,235
Taxes accrued	135	109
Interest accrued	213	246
Current maturities of long-term debt (includes amounts related to VIEs)	825	1,672
Asset retirement obligations	456	514
Regulatory liabilities	259	280
Other	778	821
Total current liabilities	5,318	6,409
Long-Term Debt (includes amounts related to VIEs)	18,276	17,089
Long-Term Debt Payable to Affiliated Companies	150	150
Operating Lease Liabilities	748
Other Noncurrent Liabilities
Deferred income taxes	4,064	3,941
Asset retirement obligations	6,050	4,897
Regulatory liabilities	5,116	5,049
Accrued pension and other post-retirement benefit costs	516	521
Other (includes amounts related to VIEs)	341	351
Total other noncurrent liabilities	16,087	14,759
Equity
Additional paid-in capital	9,143	9,143
Retained earnings	5,386	5,131
Accumulated other comprehensive loss	(23)	(20)
Total Duke Energy Corporation stockholders' equity	14,506	14,254
Noncontrolling interests	2	3
Total equity	14,508	14,257
Total Liabilities and Equity	55,087	52,664
Duke Energy Progress [Member]
Current Assets
Cash and cash equivalents	30	23
Receivables (net of allowance for doubtful accounts)	42	75
Receivables of VIEs (net of allowance for doubtful accounts)	495	547
Receivables from affiliated companies	28	23
Notes receivable from affiliated companies	38
Inventory	959	954
Regulatory assets (includes amounts related to VIEs)	622	703
Other (includes amounts related to VIEs)	45	62
Total current assets	2,259	2,387
Property, Plant and Equipment
Cost	33,188	31,459
Accumulated depreciation and amortization	(11,635)	(11,423)
Generation facilities to be retired, net	336	362
Net property, plant and equipment	21,889	20,398
Operating Lease Right-of-Use Assets, net	388
Other Noncurrent Assets
Regulatory assets	4,041	4,111
Nuclear decommissioning trust funds	2,744	2,503
Other (includes amounts related to VIEs)	627	612
Total other noncurrent assets	7,412	7,226
Total Assets	31,948	30,011
Current Liabilities
Accounts payable	363	660
Accounts payable to affiliated companies	221	278
Notes payable to affiliated companies		294
Taxes accrued	49	53
Interest accrued	87	116
Current maturities of long-term debt (includes amounts related to VIEs)	5	603
Asset retirement obligations	452	509
Regulatory liabilities	176	178
Other	346	408
Total current liabilities	1,699	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	361
Other Noncurrent Liabilities
Deferred income taxes	2,172	2,119
Asset retirement obligations	5,471	4,311
Regulatory liabilities	4,093	3,955
Accrued pension and other post-retirement benefit costs	235	237
Investment tax credits	141	142
Other (includes amounts related to VIEs)	89	106
Total other noncurrent liabilities	12,201	10,870
Equity
Total member's equity	8,644	8,441
Total Liabilities and Equity	31,948	30,011
Duke Energy Florida [Member]
Current Assets
Cash and cash equivalents	8	36
Receivables (net of allowance for doubtful accounts)	85	143
Receivables of VIEs (net of allowance for doubtful accounts)	322	362
Receivables from affiliated companies	34	28
Inventory	505	504
Regulatory assets (includes amounts related to VIEs)	454	434
Other (includes amounts related to VIEs)	55	46
Total current assets	1,463	1,553
Property, Plant and Equipment
Cost	19,111	18,792
Accumulated depreciation and amortization	(5,003)	(4,968)
Net property, plant and equipment	14,108	13,824
Operating Lease Right-of-Use Assets, net	447
Other Noncurrent Assets
Regulatory assets	2,316	2,454
Nuclear decommissioning trust funds	717	659
Other (includes amounts related to VIEs)	318	311
Total other noncurrent assets	3,351	3,424
Total Assets	19,369	18,801
Current Liabilities
Accounts payable	417	511
Accounts payable to affiliated companies	29	91
Notes payable to affiliated companies	399	108
Taxes accrued	94	74
Interest accrued	74	75
Current maturities of long-term debt (includes amounts related to VIEs)	470	270
Asset retirement obligations	4	5
Regulatory liabilities	83	102
Other	426	406
Total current liabilities	1,996	1,642
Long-Term Debt (includes amounts related to VIEs)	6,795	7,051
Operating Lease Liabilities	387
Other Noncurrent Liabilities
Deferred income taxes	2,051	1,986
Asset retirement obligations	579	586
Regulatory liabilities	1,023	1,094
Accrued pension and other post-retirement benefit costs	251	254
Other (includes amounts related to VIEs)	95	93
Total other noncurrent liabilities	3,999	4,013
Equity
Member's equity	6,193	6,097
Accumulated other comprehensive loss	(1)	(2)
Total member's equity	6,192	6,095
Total Liabilities and Equity	19,369	18,801
Duke Energy Ohio [Member]
Current Assets
Cash and cash equivalents	17	21
Receivables (net of allowance for doubtful accounts)	99	102
Receivables from affiliated companies	79	114
Notes receivable from affiliated companies	463
Inventory	111	126
Regulatory assets (includes amounts related to VIEs)	59	33
Other (includes amounts related to VIEs)	25	24
Total current assets	853	420
Property, Plant and Equipment
Cost	9,542	9,360
Accumulated depreciation and amortization	(2,739)	(2,717)
Net property, plant and equipment	6,803	6,643
Operating Lease Right-of-Use Assets, net	22
Other Noncurrent Assets
Goodwill	920	920
Regulatory assets	501	531
Other (includes amounts related to VIEs)	45	41
Total other noncurrent assets	1,466	1,492
Total Assets	9,144	8,555
Current Liabilities
Accounts payable	288	316
Accounts payable to affiliated companies	70	78
Notes payable to affiliated companies	38	274
Taxes accrued	157	202
Interest accrued	43	22
Current maturities of long-term debt (includes amounts related to VIEs)	551	551
Asset retirement obligations	6	6
Regulatory liabilities	51	57
Other	69	74
Total current liabilities	1,273	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	842	817
Asset retirement obligations	87	87
Regulatory liabilities	839	840
Accrued pension and other post-retirement benefit costs	80	79
Other (includes amounts related to VIEs)	79	93
Total other noncurrent liabilities	1,927	1,916
Equity
Common stock	762	762
Additional paid-in capital	2,776	2,776
Retained earnings	(24)	(93)
Total Duke Energy Corporation stockholders' equity	3,514	3,445
Total Liabilities and Equity	9,144	8,555
Duke Energy Indiana [Member]
Current Assets
Cash and cash equivalents	20	24
Receivables (net of allowance for doubtful accounts)	50	52
Receivables from affiliated companies	102	122
Inventory	435	422
Regulatory assets (includes amounts related to VIEs)	151	175
Other (includes amounts related to VIEs)	23	35
Total current assets	781	830
Property, Plant and Equipment
Cost	15,633	15,443
Accumulated depreciation and amortization	(5,021)	(4,914)
Net property, plant and equipment	10,612	10,529
Operating Lease Right-of-Use Assets, net	61
Other Noncurrent Assets
Regulatory assets	981	982
Other (includes amounts related to VIEs)	201	194
Total other noncurrent assets	1,182	1,176
Total Assets	12,636	12,535
Current Liabilities
Accounts payable	198	200
Accounts payable to affiliated companies	72	83
Notes payable to affiliated companies	136	167
Taxes accrued	63	43
Interest accrued	53	58
Current maturities of long-term debt (includes amounts related to VIEs)	3	63
Asset retirement obligations	108	109
Regulatory liabilities	27	25
Other	92	107
Total current liabilities	752	855
Long-Term Debt (includes amounts related to VIEs)	3,569	3,569
Long-Term Debt Payable to Affiliated Companies	150	150
Operating Lease Liabilities	57
Other Noncurrent Liabilities
Deferred income taxes	1,050	1,009
Asset retirement obligations	611	613
Regulatory liabilities	1,709	1,722
Accrued pension and other post-retirement benefit costs	113	115
Investment tax credits	147	147
Other (includes amounts related to VIEs)	29	16
Total other noncurrent liabilities	3,659	3,622
Equity
Total member's equity	4,449	4,339
Total Liabilities and Equity	12,636	12,535
Piedmont Natural Gas [Member]
Current Assets
Receivables (net of allowance for doubtful accounts)	241	266
Receivables from affiliated companies	10	22
Inventory	25	70
Regulatory assets (includes amounts related to VIEs)	28	54
Other (includes amounts related to VIEs)	19	19
Total current assets	323	431
Property, Plant and Equipment
Cost	7,676	7,486
Accumulated depreciation and amortization	(1,587)	(1,575)
Net property, plant and equipment	6,089	5,911
Operating Lease Right-of-Use Assets, net	27
Other Noncurrent Assets
Goodwill	49	49
Regulatory assets	289	303
Investments in equity method unconsolidated affiliates	64	64
Other (includes amounts related to VIEs)	51	52
Total other noncurrent assets	453	468
Total Assets	6,892	6,810
Current Liabilities
Accounts payable	161	203
Accounts payable to affiliated companies	34	38
Notes payable to affiliated companies	201	198
Taxes accrued	35	84
Interest accrued	25	31
Current maturities of long-term debt (includes amounts related to VIEs)	350	350
Regulatory liabilities	75	37
Other	49	58
Total current liabilities	930	999
Long-Term Debt (includes amounts related to VIEs)	1,788	1,788
Operating Lease Liabilities	26
Other Noncurrent Liabilities
Deferred income taxes	575	551
Asset retirement obligations	19	19
Regulatory liabilities	1,179	1,181
Accrued pension and other post-retirement benefit costs	4	4
Other (includes amounts related to VIEs)	158	177
Total other noncurrent liabilities	1,935	1,932
Equity
Common stock	1,160	1,160
Retained earnings	1,053	931
Total Duke Energy Corporation stockholders' equity	2,213	2,091
Total Liabilities and Equity	$ 6,892	$ 6,810

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