Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Current Assets
Cash and cash equivalents	$ 2,821	$ 2,036
Receivables (net of allowance for doubtful accounts)	750us-gaap_ReceivablesNetCurrent	791us-gaap_ReceivablesNetCurrent
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	2,016	1,973
Inventory	3,413us-gaap_PublicUtilitiesInventory	3,459us-gaap_PublicUtilitiesInventory
Assets held for sale	354	364
Regulatory assets	960us-gaap_RegulatoryAssetsCurrent	1,115us-gaap_RegulatoryAssetsCurrent
Other	2,008	1,837
Total current assets	12,322us-gaap_AssetsCurrent	11,575us-gaap_AssetsCurrent
Investments and Other Assets
Investments in equity method unconsolidated affiliates	343	358
Nuclear decommissioning trust funds	5,576us-gaap_DecommissioningFundInvestments	5,546us-gaap_DecommissioningFundInvestments
Goodwill	16,329us-gaap_Goodwill	16,321us-gaap_Goodwill
Assets held for sale	2,603	2,642
Other	3,207us-gaap_OtherAssetsNoncurrent	3,008us-gaap_OtherAssetsNoncurrent
Total investments and other assets	28,058	27,875
Property, Plant and Equipment
Cost	105,692us-gaap_PropertyPlantAndEquipmentGross	104,861us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation and amortization	(35,400)	(34,824)
Generation Facilities To Be Retired Net	9duk_GenerationFacilitiesToBeRetiredNet	9duk_GenerationFacilitiesToBeRetiredNet
Net property, plant and equipment	70,301us-gaap_PropertyPlantAndEquipmentNet	70,046us-gaap_PropertyPlantAndEquipmentNet
Regulatory Assets and Deferred Debits
Regulatory assets	11,279us-gaap_RegulatoryAssetsNoncurrent	11,042us-gaap_RegulatoryAssetsNoncurrent
Other	182us-gaap_UnamortizedDebtIssuanceExpense	171us-gaap_UnamortizedDebtIssuanceExpense
Total regulatory assets and deferred debits	11,461	11,213
Total Assets	122,142us-gaap_Assets	120,709us-gaap_Assets
Current Liabilities
Accounts payable	1,920us-gaap_AccountsPayableCurrent	2,271us-gaap_AccountsPayableCurrent
Notes payable and commercial paper	3,790us-gaap_ShortTermBorrowings	2,514us-gaap_ShortTermBorrowings
Taxes accrued	508us-gaap_TaxesPayableCurrent	569us-gaap_TaxesPayableCurrent
Interest accrued	490us-gaap_InterestPayableCurrent	418us-gaap_InterestPayableCurrent
Current maturities of long-term debt	2,800us-gaap_LongTermDebtCurrent	2,807us-gaap_LongTermDebtCurrent
Liabilities associated with assets held for sale	146	262
Regulatory liabilities	235us-gaap_RegulatoryLiabilityCurrent	204us-gaap_RegulatoryLiabilityCurrent
Other	2,014us-gaap_OtherLiabilitiesCurrent	2,188us-gaap_OtherLiabilitiesCurrent
Total current liabilities	11,903us-gaap_LiabilitiesCurrent	11,233us-gaap_LiabilitiesCurrent
Long-Term Debt	37,173us-gaap_LongTermDebtNoncurrent	37,213us-gaap_LongTermDebtNoncurrent
Deferred Credits and Other Liabilities
Deferred income taxes	13,914	13,423
Investment tax credits	424	427
Accrued pension and other post-retirement benefit costs	1,170	1,145
Liabilities associated with assets held for sale	26	35
Asset retirement obligations	8,541	8,466
Regulatory liabilities	6,237us-gaap_RegulatoryLiabilityNoncurrent	6,193us-gaap_RegulatoryLiabilityNoncurrent
Other	1,667	1,675
Total deferred credits and other liabilities	31,979	31,364
Commitments and Contingencies
Equity
Common stock	1us-gaap_CommonStockValue	1us-gaap_CommonStockValue
Additional paid-in capital	39,413	39,405
Retained earnings	2,309	2,012
Accumulated other comprehensive income (loss)	(672)	(543)
Total Duke Energy Corporation stockholders' equity	41,051us-gaap_StockholdersEquity	40,875us-gaap_StockholdersEquity
Noncontrolling interests	36us-gaap_MinorityInterest	24us-gaap_MinorityInterest
Total equity	41,087	40,899
Total Liabilities and Equity	122,142	120,709
Duke Energy Carolinas [Member]
Current Assets
Cash and cash equivalents	30	13
Receivables (net of allowance for doubtful accounts)	106	129
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	658	647
Receivables from affiliated companies	91	75
Notes receivable from affiliated companies	755	150
Inventory	1,117	1,124
Regulatory assets	376	399
Other	41	77
Total current assets	3,174	2,614
Investments and Other Assets
Nuclear decommissioning trust funds	3,118	3,042
Other	996	959
Total investments and other assets	4,114	4,001
Property, Plant and Equipment
Cost	37,682	37,372
Accumulated depreciation and amortization	(12,935)	(12,700)
Net property, plant and equipment	24,747	24,672
Regulatory Assets and Deferred Debits
Regulatory assets	2,460	2,465
Other	45	42
Total regulatory assets and deferred debits	2,505	2,507
Total Assets	34,540	33,794
Current Liabilities
Accounts payable	504	709
Accounts payable to affiliated companies	204	154
Taxes accrued	129	146
Interest accrued	135	95
Current maturities of long-term debt	506	507
Regulatory liabilities	26	34
Other	398	434
Total current liabilities	1,902	2,079
Long-Term Debt	8,079	7,584
Long-Term Debt Payable to Affiliated Companies	300	300
Deferred Credits and Other Liabilities
Deferred income taxes	5,901	5,812
Investment tax credits	203	204
Accrued pension and other post-retirement benefit costs	109	111
Asset retirement obligations	3,460	3,428
Regulatory liabilities	2,730	2,710
Other	640	642
Total deferred credits and other liabilities	13,043	12,907
Commitments and Contingencies
Equity
Member's equity	11,229	10,937
Accumulated other comprehensive income (loss)	(13)	(13)
Total member's equity	11,216	10,924
Total Liabilities and Equity	34,540	33,794
Progress Energy [Member]
Current Assets
Cash and cash equivalents	44	42
Receivables (net of allowance for doubtful accounts)	129	129
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	779	741
Receivables from affiliated companies	80	59
Notes receivable from affiliated companies	178	220
Inventory	1,543	1,590
Regulatory assets	392	491
Other	793	1,285
Total current assets	3,938	4,557
Investments and Other Assets
Nuclear decommissioning trust funds	2,458	2,503
Goodwill	3,655	3,655
Other	777	670
Total investments and other assets	6,890	6,828
Property, Plant and Equipment
Cost	39,067	38,650
Accumulated depreciation and amortization	(13,714)	(13,506)
Net property, plant and equipment	25,353	25,144
Regulatory Assets and Deferred Debits
Regulatory assets	5,687	5,408
Other	90	91
Total regulatory assets and deferred debits	5,777	5,499
Total Assets	41,958	42,028
Current Liabilities
Accounts payable	667	847
Accounts payable to affiliated companies	286	203
Notes payable to affiliated companies	650	835
Taxes accrued	161	114
Interest accrued	203	184
Current maturities of long-term debt	1,564	1,507
Regulatory liabilities	125	106
Other	961	1,021
Total current liabilities	4,617	4,817
Long-Term Debt	12,946	13,247
Deferred Credits and Other Liabilities
Deferred income taxes	4,834	4,759
Accrued pension and other post-retirement benefit costs	561	533
Asset retirement obligations	4,738	4,711
Regulatory liabilities	2,413	2,379
Other	411	406
Total deferred credits and other liabilities	12,957	12,788
Commitments and Contingencies
Equity
Common stock	0	0
Additional paid-in capital	7,467	7,467
Retained earnings	4,039	3,782
Accumulated other comprehensive income (loss)	(42)	(41)
Total Duke Energy Corporation stockholders' equity	11,464	11,208
Noncontrolling interests	(26)	(32)
Total equity	11,438	11,176
Total Liabilities and Equity	41,958	42,028
Duke Energy Progress [Member]
Current Assets
Cash and cash equivalents	6	9
Receivables (net of allowance for doubtful accounts)	49	43
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	479	436
Receivables from affiliated companies	4	10
Notes receivable from affiliated companies	205	237
Inventory	929	966
Regulatory assets	267	287
Other	99	384
Total current assets	2,038	2,372
Investments and Other Assets
Nuclear decommissioning trust funds	1,738	1,701
Other	450	412
Total investments and other assets	2,188	2,113
Property, Plant and Equipment
Cost	24,444	24,207
Accumulated depreciation and amortization	(9,162)	(9,021)
Net property, plant and equipment	15,282	15,186
Regulatory Assets and Deferred Debits
Regulatory assets	2,857	2,675
Other	34	34
Total regulatory assets and deferred debits	2,891	2,709
Total Assets	22,399	22,380
Current Liabilities
Accounts payable	363	481
Accounts payable to affiliated companies	183	120
Taxes accrued	61	47
Interest accrued	87	81
Current maturities of long-term debt	702	945
Regulatory liabilities	80	71
Other	359	409
Total current liabilities	1,835	2,154
Long-Term Debt	5,255	5,256
Deferred Credits and Other Liabilities
Deferred income taxes	2,978	2,908
Accrued pension and other post-retirement benefit costs	287	290
Asset retirement obligations	3,936	3,905
Regulatory liabilities	1,883	1,832
Other	175	168
Total deferred credits and other liabilities	9,259	9,103
Commitments and Contingencies
Equity
Common stock	2,159	2,159
Retained earnings	3,891	3,708
Total equity	6,050	5,867
Total Liabilities and Equity	22,399	22,380
Duke Energy Florida [Member]
Current Assets
Cash and cash equivalents	10	8
Receivables (net of allowance for doubtful accounts)	77	84
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	301	305
Receivables from affiliated companies	60	40
Inventory	614	623
Regulatory assets	124	203
Other	333	521
Total current assets	1,519	1,784
Investments and Other Assets
Nuclear decommissioning trust funds	720	803
Other	270	204
Total investments and other assets	990	1,007
Property, Plant and Equipment
Cost	14,613	14,433
Accumulated depreciation and amortization	(4,545)	(4,478)
Net property, plant and equipment	10,068	9,955
Regulatory Assets and Deferred Debits
Regulatory assets	2,830	2,733
Other	39	39
Total regulatory assets and deferred debits	2,869	2,772
Total Assets	15,446	15,518
Current Liabilities
Accounts payable	302	365
Accounts payable to affiliated companies	85	70
Notes payable to affiliated companies	192	84
Taxes accrued	126	65
Interest accrued	68	47
Current maturities of long-term debt	562	562
Regulatory liabilities	45	35
Other	577	586
Total current liabilities	1,957	1,814
Long-Term Debt	4,296	4,298
Deferred Credits and Other Liabilities
Deferred income taxes	2,465	2,452
Accrued pension and other post-retirement benefit costs	254	221
Asset retirement obligations	803	806
Regulatory liabilities	529	547
Other	157	158
Total deferred credits and other liabilities	4,208	4,184
Commitments and Contingencies
Equity
Common stock	1,762	1,762
Retained earnings	3,223	3,460
Total equity	4,985	5,222
Total Liabilities and Equity	15,446	15,518
Duke Energy Ohio [Member]
Current Assets
Cash and cash equivalents	52	20
Receivables (net of allowance for doubtful accounts)	98	93
Receivables from affiliated companies	91	107
Notes receivable from affiliated companies	40	145
Inventory	109	97
Assets held for sale	295	316
Regulatory assets	21	49
Other	97	167
Total current assets	803	994
Investments and Other Assets
Goodwill	920	920
Assets held for sale	2,565	2,605
Other	35	23
Total investments and other assets	3,520	3,548
Property, Plant and Equipment
Cost	7,208	7,141
Accumulated depreciation and amortization	(2,264)	(2,213)
Generation Facilities To Be Retired Net	9	9
Net property, plant and equipment	4,953	4,937
Regulatory Assets and Deferred Debits
Regulatory assets	512	512
Other	8	8
Total regulatory assets and deferred debits	520	520
Total Assets	9,796	9,999
Current Liabilities
Accounts payable	221	209
Accounts payable to affiliated companies	123	74
Notes payable to affiliated companies	298	491
Taxes accrued	181	163
Interest accrued	29	19
Current maturities of long-term debt	56	157
Liabilities associated with assets held for sale	129	246
Regulatory liabilities	24	10
Other	64	66
Total current liabilities	1,125	1,435
Long-Term Debt	1,525	1,584
Long-Term Debt Payable to Affiliated Companies	25	25
Deferred Credits and Other Liabilities
Deferred income taxes	1,790	1,765
Accrued pension and other post-retirement benefit costs	48	48
Liabilities associated with assets held for sale	25	34
Asset retirement obligations	26	27
Regulatory liabilities	243	241
Other	166	166
Total deferred credits and other liabilities	2,298	2,281
Commitments and Contingencies
Equity
Common stock	762	762
Additional paid-in capital	4,782	4,782
Retained earnings	(721)	(870)
Total equity	4,823	4,674
Total Liabilities and Equity	9,796	9,999
Duke Energy Indiana [Member]
Current Assets
Cash and cash equivalents	16	6
Receivables (net of allowance for doubtful accounts)	83	87
Receivables from affiliated companies	114	115
Notes receivable from affiliated companies	106
Inventory	542	537
Regulatory assets	88	93
Other	240	326
Total current assets	1,189	1,164
Investments and Other Assets
Other	257	251
Total investments and other assets	257	251
Property, Plant and Equipment
Cost	13,180	13,034
Accumulated depreciation and amortization	(4,314)	(4,219)
Net property, plant and equipment	8,866	8,815
Regulatory Assets and Deferred Debits
Regulatory assets	686	685
Other	23	24
Total regulatory assets and deferred debits	709	709
Total Assets	11,021	10,939
Current Liabilities
Accounts payable	173	179
Accounts payable to affiliated companies	59	58
Notes payable to affiliated companies		71
Taxes accrued	67	54
Interest accrued	51	56
Current maturities of long-term debt	5	5
Regulatory liabilities	60	54
Other	88	98
Total current liabilities	503	575
Long-Term Debt	3,636	3,636
Long-Term Debt Payable to Affiliated Companies	150	150
Deferred Credits and Other Liabilities
Deferred income taxes	1,656	1,591
Investment tax credits	139	139
Accrued pension and other post-retirement benefit costs	81	82
Asset retirement obligations	33	32
Regulatory liabilities	790	796
Other	78	90
Total deferred credits and other liabilities	2,777	2,730
Commitments and Contingencies
Equity
Common stock	1	1
Additional paid-in capital	1,384	1,384
Retained earnings	2,568	2,460
Accumulated other comprehensive income (loss)	2	3
Total equity	3,955	3,848
Total Liabilities and Equity	$ 11,021	$ 10,939

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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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