Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current Assets
Cash and cash equivalents	$ 2,008	$ 1,501
Short-term investments		44
Receivables (net of allowance for doubtful accounts)	877	1,286
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	2,118	1,719
Inventory	3,056	3,250
Assets held for sale	409
Regulatory assets	1,349	895
Other	1,698	1,821
Total current assets	11,515	10,516
Investments and Other Assets
Investments in equity method unconsolidated affiliates	381	390
Nuclear decommissioning trust funds	5,417	5,132
Goodwill	16,343	16,340
Assets held for sale	2,195	107
Other	3,227	3,432
Total investments and other assets	27,563	25,401
Property, Plant and Equipment
Cost	100,885	103,115
Accumulated depreciation and amortization	(33,977)	(33,625)
Net property, plant and equipment	66,908	69,490
Regulatory Assets and Deferred Debits
Regulatory assets	9,009	9,191
Other	178	181
Total regulatory assets and deferred debits	9,187	9,372
Total Assets	115,173	114,779
Current Liabilities
Accounts payable	1,782	2,391
Notes payable and commercial paper	1,867	839
Taxes accrued	522	551
Interest accrued	453	440
Current maturities of long-term debt	1,887	2,104
Liabilities associated with assets held for sale	271	7
Regulatory liabilities	140	316
Other	1,786	1,996
Total current liabilities	8,708	8,644
Long-term Debt	38,706	38,152
Deferred Credits and Other Liabilities
Deferred income taxes	12,014	12,097
Investment tax credits	435	442
Accrued pension and other post-retirement benefit costs	1,263	1,322
Liabilities associated with assets held for sale	75	66
Asset retirement obligations	5,030	4,950
Regulatory liabilities	6,338	5,949
Other	1,723	1,749
Total deferred credits and other liabilities	26,878	26,575
Commitments and Contingencies
Equity
Common stock	1	1
Additional paid-in capital	39,389	39,365
Retained earnings	1,768	2,363
Accumulated other comprehensive loss	(355)	(399)
Total Duke Energy Corporation stockholders' equity	40,803	41,330
Noncontrolling interests	78	78
Total equity	40,881	41,408
Total Liabilities and Equity	115,173	114,779
Duke Energy Carolinas [Member]
Current Assets
Cash and cash equivalents	23	23
Receivables (net of allowance for doubtful accounts)	163	186
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	705	673
Receivables from affiliated companies	87	75
Notes receivable from affiliated companies	280	222
Inventory	909	1,065
Regulatory assets	388	295
Other	271	309
Total current assets	2,826	2,848
Investments and Other Assets
Nuclear decommissioning trust funds	2,995	2,840
Other	997	1,000
Total investments and other assets	3,992	3,840
Property, Plant and Equipment
Cost	35,645	34,906
Accumulated depreciation and amortization	(12,304)	(11,894)
Net property, plant and equipment	23,341	23,012
Regulatory Assets and Deferred Debits
Regulatory assets	1,509	1,527
Other	43	46
Total regulatory assets and deferred debits	1,552	1,573
Total Assets	31,711	31,273
Current Liabilities
Accounts payable	510	701
Accounts payable to affiliated companies	156	161
Taxes accrued	255	147
Interest accrued	100	97
Current maturities of long-term debt	47	47
Regulatory liabilities	30	65
Other	368	393
Total current liabilities	1,466	1,611
Long-term Debt	8,088	8,089
Long-term Debt Payable to Affiliated Companies	300	300
Deferred Credits and Other Liabilities
Deferred income taxes	5,781	5,706
Investment tax credits	207	210
Accrued pension and other post-retirement benefit costs	157	161
Asset retirement obligations	1,641	1,594
Regulatory liabilities	2,736	2,576
Other	678	676
Total deferred credits and other liabilities	11,200	10,923
Commitments and Contingencies
Equity
Member's equity	10,670	10,365
Accumulated other comprehensive loss	(13)	(15)
Total member's equity	10,657	10,350
Total Liabilities and Equity	31,711	31,273
Progress Energy [Member]
Current Assets
Cash and cash equivalents	38	58
Receivables (net of allowance for doubtful accounts)	193	528
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	875	417
Receivables from affiliated companies	19	4
Notes receivable from affiliated companies	65	75
Inventory	1,481	1,424
Regulatory assets	642	353
Other	449	726
Total current assets	3,762	3,585
Investments and Other Assets
Nuclear decommissioning trust funds	2,422	2,292
Goodwill	3,655	3,655
Other	773	804
Total investments and other assets	6,850	6,751
Property, Plant and Equipment
Cost	36,750	36,480
Accumulated depreciation and amortization	(13,214)	(13,098)
Net property, plant and equipment	23,536	23,382
Regulatory Assets and Deferred Debits
Regulatory assets	4,036	4,155
Other	96	96
Total regulatory assets and deferred debits	4,132	4,251
Total Assets	38,280	37,969
Current Liabilities
Accounts payable	660	836
Accounts payable to affiliated companies	234	123
Notes payable to affiliated companies	984	1,213
Taxes accrued	148	105
Interest accrued	176	181
Current maturities of long-term debt	318	485
Regulatory liabilities	87	207
Other	749	896
Total current liabilities	3,356	4,046
Long-term Debt	14,200	13,630
Deferred Credits and Other Liabilities
Deferred income taxes	3,801	3,283
Accrued pension and other post-retirement benefit costs	631	765
Asset retirement obligations	2,597	2,562
Regulatory liabilities	2,480	2,292
Other	482	527
Total deferred credits and other liabilities	9,991	9,429
Commitments and Contingencies
Equity
Common stock	0	0
Additional paid-in capital	7,467	7,467
Retained earnings	3,317	3,452
Accumulated other comprehensive loss	(54)	(59)
Total Duke Energy Corporation stockholders' equity	10,730	10,860
Noncontrolling interests	3	4
Total equity	10,733	10,864
Total Liabilities and Equity	38,280	37,969
Duke Energy Progress [Member]
Current Assets
Cash and cash equivalents	7	21
Receivables (net of allowance for doubtful accounts)	120	145
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	471	417
Receivables from affiliated companies	6	2
Inventory	897	853
Regulatory assets	369	127
Other	271	296
Total current assets	2,141	1,861
Investments and Other Assets
Nuclear decommissioning trust funds	1,632	1,539
Other	461	443
Total investments and other assets	2,093	1,982
Property, Plant and Equipment
Cost	22,638	22,273
Accumulated depreciation and amortization	(8,828)	(8,623)
Net property, plant and equipment	13,810	13,650
Regulatory Assets and Deferred Debits
Regulatory assets	1,428	1,384
Other	34	32
Total regulatory assets and deferred debits	1,462	1,416
Total Assets	19,506	18,909
Current Liabilities
Accounts payable	316	420
Accounts payable to affiliated companies	162	103
Notes payable to affiliated companies	201	462
Taxes accrued	48	37
Interest accrued	78	70
Current maturities of long-term debt	306	174
Regulatory liabilities	61	63
Other	329	392
Total current liabilities	1,501	1,721
Long-term Debt	5,411	5,061
Deferred Credits and Other Liabilities
Deferred income taxes	2,715	2,557
Accrued pension and other post-retirement benefit costs	315	321
Asset retirement obligations	1,779	1,729
Regulatory liabilities	1,853	1,673
Other	198	222
Total deferred credits and other liabilities	6,860	6,502
Commitments and Contingencies
Equity
Common stock	2,159	2,159
Retained earnings	3,575	3,466
Total equity	5,734	5,625
Total Liabilities and Equity	19,506	18,909
Duke Energy Florida [Member]
Current Assets
Cash and cash equivalents	13	16
Receivables (net of allowance for doubtful accounts)	71	375
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	403
Receivables from affiliated companies	7	3
Notes receivable from affiliated companies	76
Inventory	583	571
Regulatory assets	273	221
Other	23	182
Total current assets	1,449	1,368
Investments and Other Assets
Nuclear decommissioning trust funds	790	753
Other	256	252
Total investments and other assets	1,046	1,005
Property, Plant and Equipment
Cost	14,102	13,863
Accumulated depreciation and amortization	(4,380)	(4,252)
Net property, plant and equipment	9,722	9,611
Regulatory Assets and Deferred Debits
Regulatory assets	2,609	2,729
Other	43	44
Total regulatory assets and deferred debits	2,652	2,773
Total Assets	14,869	14,757
Current Liabilities
Accounts payable	345	333
Accounts payable to affiliated companies	67	38
Notes payable to affiliated companies		181
Taxes accrued	173	66
Interest accrued	42	46
Current maturities of long-term debt	12	11
Regulatory liabilities	26	144
Other	405	445
Total current liabilities	1,070	1,264
Long-term Debt	5,095	4,875
Deferred Credits and Other Liabilities
Deferred income taxes	1,800	1,829
Accrued pension and other post-retirement benefit costs	283	286
Asset retirement obligations	818	833
Regulatory liabilities	625	618
Other	254	255
Total deferred credits and other liabilities	3,780	3,821
Commitments and Contingencies
Equity
Common stock	1,762	1,762
Retained earnings	3,162	3,036
Accumulated other comprehensive loss		(1)
Total equity	4,924	4,797
Total Liabilities and Equity	14,869	14,757
Duke Energy Ohio [Member]
Current Assets
Cash and cash equivalents	25	36
Receivables (net of allowance for doubtful accounts)	119	121
Receivables from affiliated companies	73	121
Notes receivable from affiliated companies	184	57
Inventory	120	229
Assets held for sale	359
Regulatory assets	71	57
Other	188	270
Total current assets	1,139	891
Investments and Other Assets
Goodwill	920	920
Assets held for sale	2,153
Other	19	232
Total investments and other assets	3,092	1,152
Property, Plant and Equipment
Cost	7,091	11,143
Accumulated depreciation and amortization	(2,223)	(2,908)
Net property, plant and equipment	4,868	8,235
Regulatory Assets and Deferred Debits
Regulatory assets	461	471
Other	9	14
Total regulatory assets and deferred debits	470	485
Total Assets	9,569	10,763
Current Liabilities
Accounts payable	166	319
Accounts payable to affiliated companies	74	77
Notes payable to affiliated companies	828	43
Taxes accrued	97	167
Interest accrued	20	17
Current maturities of long-term debt	197	47
Liabilities associated with assets held for sale	257
Regulatory liabilities	13	27
Other	78	110
Total current liabilities	1,730	807
Long-term Debt	1,587	2,141
Deferred Credits and Other Liabilities
Deferred income taxes	1,527	2,012
Accrued pension and other post-retirement benefit costs	31	58
Liabilities associated with assets held for sale	74
Asset retirement obligations	25	28
Regulatory liabilities	261	262
Other	162	186
Total deferred credits and other liabilities	2,080	2,546
Commitments and Contingencies
Equity
Common stock	762	762
Additional paid-in capital	4,782	4,882
Retained earnings	(1,372)	(375)
Total equity	4,172	5,269
Total Liabilities and Equity	9,569	10,763
Duke Energy Indiana [Member]
Current Assets
Cash and cash equivalents	12	15
Receivables (net of allowance for doubtful accounts)	42	22
Receivables from affiliated companies	108	151
Notes receivable from affiliated companies	75	96
Inventory	440	434
Regulatory assets	173	118
Other	231	125
Total current assets	1,081	961
Investments and Other Assets
Other	218	269
Total investments and other assets	218	269
Property, Plant and Equipment
Cost	12,717	12,489
Accumulated depreciation and amortization	(4,049)	(3,913)
Net property, plant and equipment	8,668	8,576
Regulatory Assets and Deferred Debits
Regulatory assets	669	717
Other	25	25
Total regulatory assets and deferred debits	694	742
Total Assets	10,661	10,548
Current Liabilities
Accounts payable	129	206
Accounts payable to affiliated companies	69	56
Taxes accrued	138	57
Interest accrued	59	56
Current maturities of long-term debt	5	5
Regulatory liabilities	10	16
Other	125	88
Total current liabilities	535	484
Long-term Debt	3,640	3,641
Long-term Debt Payable to Affiliated Companies	150	150
Deferred Credits and Other Liabilities
Deferred income taxes	1,303	1,171
Investment tax credits	140	140
Accrued pension and other post-retirement benefit costs	106	163
Asset retirement obligations	30	30
Regulatory liabilities	804	782
Other	39	48
Total deferred credits and other liabilities	2,422	2,334
Commitments and Contingencies
Equity
Common stock	1	1
Additional paid-in capital	1,384	1,384
Retained earnings	2,526	2,551
Accumulated other comprehensive loss	3	3
Total equity	3,914	3,939
Total Liabilities and Equity	$ 10,661	$ 10,548