Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Current Assets [Abstract]
Cash and cash equivalents	$ 1,501		$ 1,424
Short Term Investments	44		333
Receivables (net of allowance for doubtful accounts)	1,286		1,516
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	1,719		1,201
Inventory	3,250		3,223
Regulatory assets, current	895		737
Other	1,821		1,688
Total current assets	10,516		10,122
Investments and Other Assets [Abstract]
Investments in equity method unconsolidated affiliates	390		483
Nuclear decommissioning trust funds	5,132		4,242
Goodwill	16,340		16,365
Other	3,539		2,904
Total investments and other assets	25,401		23,994
Property, Plant and Equipment [Abstract]
Cost	103,115	[1],[2]	100,391	[3],[4]
Accumulated depreciation and amortization	(33,625)		(31,969)
Generation facilities to be retired, net	0		136
Net property, plant and equipment	69,490		68,558
Regulatory Assets and Deferred Debits [Abstract]
Regulatory assets, noncurrent	9,191		11,004
Other	181		178
Total regulatory assets and deferred debits	9,372		11,182
Total Assets	114,779		113,856
Current Liabilities [Abstract]
Accounts payable	2,391		2,444
Notes payable and commercial paper	839		1,057
Taxes accrued	551		459
Interest accrued	440		448
Current maturities of long-term debt	2,104		3,110
Regulatory liabilities, current	316		156
Other	2,003		2,355
Total current liabilities	8,644		10,029
Long-term debt	38,152		36,351
Deferred Credits and Other Liabilities [Abstract]
Deferred income taxes	12,097		10,490
Investment tax credits	442		458
Accrued pension and other post-retirement benefit costs	1,322		2,520
Asset retirement obligations	4,950		5,169
Regulatory liabilities - noncurrent	5,949		5,584
Other	1,815		2,221
Total deferred credits and other liabilities	26,575		26,442
Commitments and Contingencies
Preferred Stock of Subsidiaries	0		93
Equity [Abstract]
Common stock	1		1
Additional paid-in capital	39,365		39,279
Retained earnings	2,363		1,889
Accumulated other comprehensive (loss) income	(399)		(306)
Total Common Shareholders' Equity	41,330		40,863
Noncontrolling interests	78		78
Total equity	41,408		40,941
Total Liabilities and Equity	114,779		113,856
Duke Energy Carolinas [Member]
Current Assets [Abstract]
Cash and cash equivalents	23		19
Receivables (net of allowance for doubtful accounts)	186		188
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	673		637
Receivables from affiliated companies	75		3
Notes receivable from affiliated companies	222		382
Inventory	1,065		1,062
Regulatory assets, current	295		221
Other	309		218
Total current assets	2,848		2,730
Investments and Other Assets [Abstract]
Nuclear decommissioning trust funds	2,840		2,354
Other	1,000		934
Total investments and other assets	3,840		3,288
Property, Plant and Equipment [Abstract]
Cost	34,906	[1]	34,190	[3]
Accumulated depreciation and amortization	(11,894)		(11,437)
Generation facilities to be retired, net	0		73
Net property, plant and equipment	23,012		22,826
Regulatory Assets and Deferred Debits [Abstract]
Regulatory assets, noncurrent	1,527		1,727
Other	46		71
Total regulatory assets and deferred debits	1,573		1,798
Total Assets	31,273		30,642
Current Liabilities [Abstract]
Accounts payable	701		599
Accounts payable to affiliated companies	161		128
Taxes accrued	147		114
Interest accrued	97		96
Current maturities of long-term debt	47		406
Regulatory liabilities, current	65		78
Other	393		412
Total current liabilities	1,611		1,833
Long-term debt	8,089		8,035
Long-term debt payable to affiliated companies	300		300
Deferred Credits and Other Liabilities [Abstract]
Deferred income taxes	5,706		5,181
Investment tax credits	210		215
Accrued pension and other post-retirement benefit costs	161		221
Asset retirement obligations	1,594		1,959
Regulatory liabilities - noncurrent	2,576		2,102
Other	676		924
Total deferred credits and other liabilities	10,923		10,602
Commitments and Contingencies
Equity [Abstract]
Member's equity	10,365		9,888
Accumulated other comprehensive (loss) income	(15)		(16)
Total Member's Equity	10,350		9,872
Total Liabilities and Equity	31,273		30,642
Progress Energy [Member]
Current Assets [Abstract]
Cash and cash equivalents	58		231
Receivables (net of allowance for doubtful accounts)	528		790
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	417
Receivables from affiliated companies	4		15
Notes receivable from affiliated companies	75		0
Inventory	1,424		1,441
Regulatory assets, current	353		256
Other	726		510
Total current assets	3,585		3,243
Investments and Other Assets [Abstract]
Nuclear decommissioning trust funds	2,292		1,888
Goodwill	3,655		3,655
Other	804		530
Total investments and other assets	6,751		6,073
Property, Plant and Equipment [Abstract]
Cost	36,480	[1]	35,146	[3]
Accumulated depreciation and amortization	(13,098)		(12,512)
Generation facilities to be retired, net	0		63
Net property, plant and equipment	23,382		22,697
Regulatory Assets and Deferred Debits [Abstract]
Regulatory assets, noncurrent	4,155		5,292
Other	96		100
Total regulatory assets and deferred debits	4,251		5,392
Total Assets	37,969		37,405
Current Liabilities [Abstract]
Accounts payable	836		1,066
Accounts payable to affiliated companies	123		30
Notes payable to affiliated companies	1,213		455
Taxes accrued	105		83
Interest accrued	181		192
Current maturities of long-term debt	485		843
Regulatory liabilities, current	207		28
Other	896		1,090
Total current liabilities	4,046		3,787
Long-term debt	13,630		13,311
Long-term debt payable to affiliated companies	0		274
Deferred Credits and Other Liabilities [Abstract]
Deferred income taxes	3,283		2,558
Accrued pension and other post-retirement benefit costs	765		1,608
Asset retirement obligations	2,562		2,413
Regulatory liabilities - noncurrent	2,292		2,469
Other	527		707
Total deferred credits and other liabilities	9,429		9,755
Commitments and Contingencies
Preferred Stock of Subsidiaries	0		93
Equity [Abstract]
Common stock	0		0
Additional paid-in capital	7,467		7,465
Retained earnings	3,452		2,783
Accumulated other comprehensive (loss) income	(59)		(67)
Total Common Shareholders' Equity	10,860		10,181
Noncontrolling interests	4		4
Total equity	10,864		10,185
Total Liabilities and Equity	37,969		37,405
Duke Energy Progress [Member]
Current Assets [Abstract]
Cash and cash equivalents	21		18
Receivables (net of allowance for doubtful accounts)	145		458
Restricted receivables of variable interest entities (net of allowance for doubtful accounts)	417		0
Receivables from affiliated companies	2		5
Inventory	853		828
Regulatory assets, current	127		77
Other	296		236
Total current assets	1,861		1,622
Investments and Other Assets [Abstract]
Nuclear decommissioning trust funds	1,539		1,259
Other	443		251
Total investments and other assets	1,982		1,510
Property, Plant and Equipment [Abstract]
Cost	22,273	[1]	21,184	[3]
Accumulated depreciation and amortization	(8,623)		(8,185)
Generation facilities to be retired, net	0		63
Net property, plant and equipment	13,650		13,062
Regulatory Assets and Deferred Debits [Abstract]
Regulatory assets, noncurrent	1,384		1,845
Other	32		29
Total regulatory assets and deferred debits	1,416		1,874
Total Assets	18,909		18,068
Current Liabilities [Abstract]
Accounts payable	420		542
Accounts payable to affiliated companies	103		76
Notes payable to affiliated companies	462		364
Taxes accrued	37		23
Interest accrued	70		69
Current maturities of long-term debt	174		407
Regulatory liabilities, current	63		10
Other	392		507
Total current liabilities	1,721		1,998
Long-term debt	5,061		4,433
Deferred Credits and Other Liabilities [Abstract]
Deferred income taxes	2,557		2,162
Accrued pension and other post-retirement benefit costs	321		715
Asset retirement obligations	1,729		1,649
Regulatory liabilities - noncurrent	1,673		1,538
Other	222		387
Total deferred credits and other liabilities	6,502		6,451
Commitments and Contingencies
Preferred stock	0		59
Equity [Abstract]
Common stock	2,159		2,159
Retained earnings	3,466		2,968
Total equity	5,625		5,127
Total Liabilities and Equity	18,909		18,068
Duke Energy Florida [Member]
Current Assets [Abstract]
Cash and cash equivalents	16		131
Receivables (net of allowance for doubtful accounts)	375		318
Receivables from affiliated companies	3		20
Notes receivable from affiliated companies	0		207
Inventory	571		613
Regulatory assets, current	221		179
Other	182		172
Total current assets	1,368		1,640
Investments and Other Assets [Abstract]
Nuclear decommissioning trust funds	753		629
Other	252		182
Total investments and other assets	1,005		811
Property, Plant and Equipment [Abstract]
Cost	13,863	[1]	13,432	[3]
Accumulated depreciation and amortization	(4,252)		(4,072)
Net property, plant and equipment	9,611		9,360
Regulatory Assets and Deferred Debits [Abstract]
Regulatory assets, noncurrent	2,729		3,321
Other	44		48
Total regulatory assets and deferred debits	2,773		3,369
Total Assets	14,757		15,180
Current Liabilities [Abstract]
Accounts payable	333		412
Accounts payable to affiliated companies	38		44
Notes payable to affiliated companies	181		0
Taxes accrued	66		48
Interest accrued	46		55
Current maturities of long-term debt	11		435
Regulatory liabilities, current	144		18
Other	445		516
Total current liabilities	1,264		1,528
Long-term debt	4,875		4,885
Deferred Credits and Other Liabilities [Abstract]
Deferred income taxes	1,829		1,518
Accrued pension and other post-retirement benefit costs	286		610
Asset retirement obligations	833		764
Regulatory liabilities - noncurrent	618		787
Other	255		255
Total deferred credits and other liabilities	3,821		3,934
Commitments and Contingencies
Preferred stock	0		34
Equity [Abstract]
Common stock	1,762		1,762
Retained earnings	3,036		3,037
Accumulated other comprehensive (loss) income	(1)		0
Total equity	4,797		4,799
Total Liabilities and Equity	14,757		15,180
Duke Energy Ohio [Member]
Current Assets [Abstract]
Cash and cash equivalents	36		31
Receivables (net of allowance for doubtful accounts)	121		108
Receivables from affiliated companies	121		82
Notes receivable from affiliated companies	57		1
Inventory	229		227
Regulatory assets, current	57		46
Other	270		221
Total current assets	891		716
Investments and Other Assets [Abstract]
Goodwill	920		921
Other	232		204
Total investments and other assets	1,152		1,125
Property, Plant and Equipment [Abstract]
Cost	11,143	[1]	10,824	[3]
Accumulated depreciation and amortization	(2,908)		(2,698)
Net property, plant and equipment	8,235		8,126
Regulatory Assets and Deferred Debits [Abstract]
Regulatory assets, noncurrent	471		579
Other	14		14
Total regulatory assets and deferred debits	485		593
Total Assets	10,763		10,560
Current Liabilities [Abstract]
Accounts payable	319		318
Accounts payable to affiliated companies	77		62
Notes payable to affiliated companies	43		245
Taxes accrued	167		159
Interest accrued	17		14
Current maturities of long-term debt	47		261
Regulatory liabilities, current	27		39
Other	110		87
Total current liabilities	807		1,185
Long-term debt	2,141		1,736
Deferred Credits and Other Liabilities [Abstract]
Deferred income taxes	2,012		1,853
Investment tax credits	0		0
Accrued pension and other post-retirement benefit costs	58		157
Asset retirement obligations	28		28
Regulatory liabilities - noncurrent	262		254
Other	186		181
Total deferred credits and other liabilities	2,546		2,473
Commitments and Contingencies
Equity [Abstract]
Common stock	762		762
Additional paid-in capital	4,882		4,882
Retained earnings	(375)		(477)
Accumulated other comprehensive (loss) income	0		(1)
Total equity	5,269		5,166
Total Liabilities and Equity	10,763		10,560
Duke Energy Indiana [Member]
Current Assets [Abstract]
Cash and cash equivalents	15		36
Receivables (net of allowance for doubtful accounts)	22		33
Receivables from affiliated companies	151		104
Notes receivable from affiliated companies	96
Inventory	434		380
Regulatory assets, current	118		126
Other	125		12
Total current assets	961		691
Investments and Other Assets [Abstract]
Other	269		163
Total investments and other assets	269		163
Property, Plant and Equipment [Abstract]
Cost	12,489	[1]	12,012	[3]
Accumulated depreciation and amortization	(3,913)		(3,692)
Net property, plant and equipment	8,576		8,320
Regulatory Assets and Deferred Debits [Abstract]
Regulatory assets, noncurrent	717		810
Other	25		24
Total regulatory assets and deferred debits	742		834
Total Assets	10,548		10,008
Current Liabilities [Abstract]
Accounts payable	206		173
Accounts payable to affiliated companies	56		60
Notes payable to affiliated companies	0		81
Taxes accrued	57		61
Interest accrued	56		53
Current maturities of long-term debt	5		405
Regulatory liabilities, current	16		11
Other	88		154
Total current liabilities	484		998
Long-term debt	3,641		3,147
Long-term debt payable to affiliated companies	150		150
Deferred Credits and Other Liabilities [Abstract]
Deferred income taxes	1,171		853
Investment tax credits	140		142
Accrued pension and other post-retirement benefit costs	163		186
Asset retirement obligations	30		37
Regulatory liabilities - noncurrent	782		741
Other	48		46
Total deferred credits and other liabilities	2,334		2,005
Commitments and Contingencies
Equity [Abstract]
Common stock	1		1
Additional paid-in capital	1,384		1,384
Retained earnings	2,551		2,318
Accumulated other comprehensive (loss) income	3		5
Total equity	3,939		3,708
Total Liabilities and Equity	$ 10,548		$ 10,008

[1] Includes capitalized leases of $1,606 million, $53 million, $328 million, $148 million, $180 million, $96 million, and $30 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, and Duke Energy Indiana, respectively, primarily in regulated plant. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $60 million, an insignificant amount and $57 million, respectively, of accumulated amortization of capitalized leases.

[2] Includes gross property, plant and equipment cost of consolidated VIEs of $1,678 million and accumulated depreciation of consolidated VIEs of $175 million at Duke Energy.

[3] Includes capitalized leases of $1,844 million, $53 million, $339 million, $150 million, $189 million, $86 million, and $28 million at Duke Energy, Duke Energy Carolinas, Progress Energy, Duke Energy Progress, Duke Energy Florida, Duke Energy Ohio, and Duke Energy Indiana, respectively, primarily in regulated plant. The Progress Energy, Duke Energy Progress and Duke Energy Florida amounts are net of $49 million, an insignificant amount and $48 million, respectively, of accumulated amortization of capitalized leases.

[4] Includes gross property, plant and equipment cost of consolidated VIEs of $1,558 million and accumulated depreciation of consolidated VIEs of $103 million at Duke Energy.