Condensed Consolidating Statements (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Condensed Consolidating Income Statement [Abstract]
Operating revenues	$ 5,695	$ 6,722	$ 3,577	$ 3,630	$ 3,368	$ 3,964	$ 3,534	$ 3,663	$ 19,624	$ 14,529	$ 14,272
Operating expenses
Fuel used in electric generation and purchased power-regulated									5,582	3,309	3,345
Operation, maintenance and other									5,006	3,770	3,825
Depreciation and amortization									2,289	1,806	1,786
Property and other taxes									985	704	702
Pre-tax impairment charge									666	335	726
Total operating expenses									16,514	11,760	11,964
(Gains) losses on sales of other assets									44	19	268
Operating income (loss)	767	1,078	786	495	517	767	679	814	3,126	2,777	2,461
Equity in earnings (losses) of unconsolidated affiliates									148	160	116
Other income and expenses, net									567	547	589
Interest expense, net									1,242	859	840
Income Loss From Continuing Operations Before Income Taxes									2,451	2,465	2,210
Income Tax Expense or Benefit from Continuing Operations									705	752	890
Income (Loss) from Continuing Operations Attributable to Parent	406	594	449	297	290	469	441	513	1,746	1,713	1,320
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									36	1	3
Net Income (Loss)	437	598	448	299	290	470	441	513	1,782	1,714	1,323
Less: Net Income Attributable to Noncontrolling Interests									14	8	3
Net Income Attributable to Duke Energy Corporation	435	594	444	295	288	472	435	511	1,768	1,706	1,320
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Total comprehensive income									1,706	1,471	1,696
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest									10	1	2
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									1,696	1,470	1,694
Current Assets
Cash and cash equivalents	1,424				2,110				1,424	2,110	1,670
Receivables (net of allowance for doubtful accounts)	1,516				784				1,516	784
Public Utilities, Inventory	3,223				1,588				3,223	1,588
Total current assets	10,122				6,880				10,122	6,880
Assets, Noncurrent
Decommissioning Fund Investments	4,242				2,060				4,242	2,060
Investments in unconsolidated affiliates	483				460				483	460
Goodwill bs	16,365				3,849				16,365	3,849
Investments and Other Noncurrent Assets	23,994				9,160				23,994	9,160
Net property, plant and equipment	68,558				42,661				68,558	42,661
Regulated Entity, Other Assets, Noncurrent
Regulatory Assets, Noncurrent	11,004				3,672				11,004	3,672
Other Regulatory Assets and Deferred Debits	178				153				178	153
Total Regulatory Assets And Deferred Debits	11,182				3,825				11,182	3,825
Total Assets	113,856				62,526				113,856	62,526	59,090
Current Liabilities
Short-term Debt	745				154				745	154
Current maturities of long-term debt	3,110				1,894				3,110	1,894
Total current liabilities	10,029				5,528				10,029	5,528
Long-term Debt Noncurrent	35,499				17,730				35,499	17,730
Liabilities, Noncurrent
DeferredTaxLiabilitiesNoncurrent	10,490				7,581				10,490	7,581
Asset Retirement Obligations, Noncurrent	5,169				1,936				5,169	1,936
Regulatory Liability, Noncurrent	5,584				2,919				5,584	2,919
Total deferred credits and other liabilities	26,442				15,454				26,442	15,454
Noncontrolling Interest, Amount Represented by Preferred Stock	93				0				93	0
Equity Condensed Consolidating
Total Duke Energy Corporation shareholders' equity	40,863				22,772				40,863	22,772
Stockholders' Equity Attributable to Noncontrolling Interest	78				93				78	93
Total equity	40,941				22,865				40,941	22,865	22,653	21,886
Total Liabilities and Equity	113,856				62,526				113,856	62,526
Condensed Consolidating Cash Flow Statement
Net cash provided by operating activities									5,244	3,672	4,511
Net Cash Provided by (Used in) Investing Activities
Capital expenditures									5,501	4,363	4,803
Proceeds from sales and maturities of available-for-sale securities									4,537	3,063	2,261
Net cash used in investing activities									(6,197)	(4,434)	(4,423)
Net Cash Provided by (Used in) Financing Activities
Issuance of long-term debt									4,170	2,570	2,738
Issuance of common stock related to employee benefit plans									23	67	302
Repayments of Long-term Debt									2,498	278	1,647
Distributions to noncontrolling interests									25	26	10
Other									(5)	(10)	(4)
Net Cash Provided by (Used in) Financing Activities									267	1,202	40
Net increase (decrease) in cash and cash equivalents									(686)	440	128
Cash and cash equivalents at beginning of period				2,110				1,670	2,110	1,670	1,542
Cash and cash equivalents at end of period	1,424				2,110				1,424	2,110	1,670
PGN Parent [Member]
Operating expenses
Operation, maintenance and other									4	10	8
Total operating expenses									4	10	8
Operating income (loss)									(4)	(10)	(8)
Equity in earnings (losses) of unconsolidated affiliates									560	798	1,027
Other income and expenses, net									8	(61)	7
Interest expense, net									256	279	282
Income Loss From Continuing Operations Before Income Taxes									308	448	744
Income Tax Expense or Benefit from Continuing Operations									(92)	(127)	(111)
Income (Loss) from Continuing Operations Attributable to Parent									400	575	855
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest											1
Net Income (Loss)									400	575	856
Net Income Attributable to Duke Energy Corporation									400	575	856
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Total comprehensive income									498	535	818
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									498	535	818
Current Assets
Cash and cash equivalents	63				117				63	117	110
Notes receivable from affiliated companies	603				53				603	53
Prepayments and other current assets	73				127				73	127
Total current assets	739				297				739	297
Assets, Noncurrent
Investments in unconsolidated affiliates	14,238				14,043				14,238	14,043
Other	183				118				183	118
Investments and Other Noncurrent Assets	14,421				14,161				14,421	14,161
Regulated Entity, Other Assets, Noncurrent
Other Regulatory Assets and Deferred Debits	23				22				23	22
Total Regulatory Assets And Deferred Debits	23				22				23	22
Total Assets	15,183				14,480				15,183	14,480
Current Liabilities
Short-term Debt					250					250
Current maturities of long-term debt					450					450
Notes Payable, Related Parties, Current	840								840
Other	147				199				147	199
Total current liabilities	987				899				987	899
Long-term Debt Noncurrent	3,992				3,543				3,992	3,543
Liabilities, Noncurrent
Deferred credits and other liabilities	23				17				23	17
Total deferred credits and other liabilities	23				17				23	17
Equity Condensed Consolidating
Total Duke Energy Corporation shareholders' equity	10,181				10,021				10,181	10,021
Total equity	10,181				10,021				10,181	10,021
Total Liabilities and Equity	15,183				14,480				15,183	14,480
Condensed Consolidating Cash Flow Statement
Net cash provided by operating activities									327	756	16
Net Cash Provided by (Used in) Investing Activities
Notes due from affiliate									(550)	(38)	15
Return of investment in consolidated subsidiaries											54
Contributions to consolidated subsidiaries										(11)	(171)
Other									25	(24)	113
Net cash used in investing activities									(525)	73	11
Net Cash Provided by (Used in) Financing Activities
Issuance of long-term debt									444	495
Issuance of common stock related to employee benefit plans									6	53	434
Repayments of Long-term Debt									(450)	(700)	(100)
ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess									250	250	(140)
PaymentsOfDividendsCommonStock									(445)	(734)	(717)
Notes payable to affiliate									840
Other									(1)	(40)
Net Cash Provided by (Used in) Financing Activities									144	(676)	(523)
Net increase (decrease) in cash and cash equivalents									(54)	7	(496)
Cash and cash equivalents at beginning of period				117				110	117	110	606
Cash and cash equivalents at end of period	63				117				63	117	110
Guarantor Subsidiaries [Member]
Condensed Consolidating Income Statement [Abstract]
Operating revenues									4,701	4,404	5,292
Operating expenses
Fuel used in electric generation and purchased power-regulated									2,409	2,288	2,613
Operation, maintenance and other									981	896	928
Depreciation and amortization									192	169	426
Property and other taxes									347	351	362
Pre-tax impairment charge									146
Total operating expenses									4,075	3,704	4,329
(Gains) losses on sales of other assets									2	2	(5)
Operating income (loss)									628	702	958
Other income and expenses, net									42	32	33
Interest expense, net									276	262	280
Income Loss From Continuing Operations Before Income Taxes									394	472	711
Income Tax Expense or Benefit from Continuing Operations									138	170	267
Income (Loss) from Continuing Operations Attributable to Parent									256	302	444
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									35	(3)	(1)
Net Income (Loss)									291	299	443
Less: Net Income Attributable to Noncontrolling Interests									4	4	4
Net Income Attributable to Duke Energy Corporation									287	295	439
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Total comprehensive income									308	271	434
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest									4	4	4
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									304	267	430
Current Assets
Cash and cash equivalents	149				92				149	92	270
Receivables (net of allowance for doubtful accounts)	321				367				321	367
Notes receivable from affiliated companies	223								223
Public Utilities, Inventory	613				659				613	659
Prepayments and other current assets	393				418				393	418
Total current assets	1,699				1,536				1,699	1,536
Assets, Noncurrent
Decommissioning Fund Investments	629				559				629	559
Other	228				189				228	189
Investments and Other Noncurrent Assets	857				748				857	748
Net property, plant and equipment	9,362				10,455				9,362	10,455
Regulated Entity, Other Assets, Noncurrent
Regulatory Assets, Noncurrent	3,321				1,629				3,321	1,629
Other Regulatory Assets and Deferred Debits	55				51				55	51
Total Regulatory Assets And Deferred Debits	3,376				1,680				3,376	1,680
Total Assets	15,294				14,419				15,294	14,419
Current Liabilities
Short-term Debt					233					233
Current maturities of long-term debt	435				10				435	10
Notes Payable, Related Parties, Current	235				238				235	238
Other	1,098				1,030				1,098	1,030
Total current liabilities	1,768				1,511				1,768	1,511
Long-term Debt Noncurrent	4,885				4,671				4,885	4,671
Notes Payable, Related Parties, Noncurrent	309				309				309	309
Liabilities, Noncurrent
DeferredTaxLiabilitiesNoncurrent	932				757				932	757
Asset Retirement Obligations, Noncurrent	764				369				764	369
Regulatory Liability, Noncurrent	787				1,024				787	1,024
Deferred credits and other liabilities	943				1,012				943	1,012
Total deferred credits and other liabilities	3,426				3,162				3,426	3,162
Noncontrolling Interest, Amount Represented by Preferred Stock	34				34				34	34
Equity Condensed Consolidating
Total Duke Energy Corporation shareholders' equity	4,868				4,728				4,868	4,728
Stockholders' Equity Attributable to Noncontrolling Interest	4				4				4	4
Total equity	4,872				4,732				4,872	4,732
Total Liabilities and Equity	15,294				14,419				15,294	14,419
Condensed Consolidating Cash Flow Statement
Net cash provided by operating activities									853	706	1,181
Net Cash Provided by (Used in) Investing Activities
Capital expenditures									(809)	(815)	(1,055)
Purchases of available-for-sale securities									(792)	(4,438)	(6,391)
Proceeds from sales and maturities of available-for-sale securities									792	4,441	6,395
Notes due from affiliate									(223)	48	(2)
Other									18	103	63
Net cash used in investing activities									(1,014)	(661)	(990)
Net Cash Provided by (Used in) Financing Activities
Issuance of long-term debt									642	296	591
Repayments of Long-term Debt									(10)	(309)	(308)
ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess									(233)	233
Distributions to noncontrolling interests									(4)	(4)	(3)
Capital contribution to parent									(173)	(513)	(102)
Notes payable to affiliate									(3)	63	(201)
Contributions from parent										10	33
Other									(1)	1	(3)
Net Cash Provided by (Used in) Financing Activities									218	(223)	7
Net increase (decrease) in cash and cash equivalents									57	(178)	198
Cash and cash equivalents at beginning of period				92				270	92	270	72
Cash and cash equivalents at end of period	149				92				149	92	270
Non-Guarantor Subsidiaries [Member]
Condensed Consolidating Income Statement [Abstract]
Operating revenues									4,707	4,547	4,933
Operating expenses
Fuel used in electric generation and purchased power-regulated									1,895	1,755	2,008
Operation, maintenance and other									1,452	1,147	1,100
Depreciation and amortization									555	532	494
Property and other taxes									232	218	225
Pre-tax impairment charge									54	3	5
Total operating expenses									4,188	3,655	3,832
(Gains) losses on sales of other assets									(4)	2	(4)
Operating income (loss)									515	894	1,097
Other income and expenses, net									81	81	74
Interest expense, net									208	184	192
Income Loss From Continuing Operations Before Income Taxes									388	791	979
Income Tax Expense or Benefit from Continuing Operations									123	275	378
Income (Loss) from Continuing Operations Attributable to Parent									265	516	601
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									17	(2)	(4)
Net Income (Loss)									282	514	597
Less: Net Income Attributable to Noncontrolling Interests											(1)
Net Income Attributable to Duke Energy Corporation									282	514	598
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Total comprehensive income									352	519	582
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest											(1)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									352	519	583
Current Assets
Cash and cash equivalents	19				21				19	21	231
Receivables (net of allowance for doubtful accounts)	470				516				470	516
Notes receivable from affiliated companies	162				219				162	219
Public Utilities, Inventory	828				770				828	770
Prepayments and other current assets	470				297				470	297
Total current assets	1,949				1,823				1,949	1,823
Assets, Noncurrent
Decommissioning Fund Investments	1,259				1,088				1,259	1,088
Other	694				675				694	675
Investments and Other Noncurrent Assets	1,953				1,763				1,953	1,763
Net property, plant and equipment	13,190				11,677				13,190	11,677
Regulated Entity, Other Assets, Noncurrent
Regulatory Assets, Noncurrent	1,971				1,795				1,971	1,795
Other Regulatory Assets and Deferred Debits	28				22				28	22
Total Regulatory Assets And Deferred Debits	1,999				1,817				1,999	1,817
Total Assets	19,091				17,080				19,091	17,080
Current Liabilities
Short-term Debt					188					188
Current maturities of long-term debt	407				502				407	502
Notes Payable, Related Parties, Current	368				34				368	34
Other	1,398				1,221				1,398	1,221
Total current liabilities	2,173				1,945				2,173	1,945
Long-term Debt Noncurrent	4,433				3,704				4,433	3,704
Liabilities, Noncurrent
DeferredTaxLiabilitiesNoncurrent	2,162				1,903				2,162	1,903
Asset Retirement Obligations, Noncurrent	1,649				896				1,649	896
Regulatory Liability, Noncurrent	1,538				1,543				1,538	1,543
Deferred credits and other liabilities	1,375				1,384				1,375	1,384
Total deferred credits and other liabilities	6,724				5,726				6,724	5,726
Noncontrolling Interest, Amount Represented by Preferred Stock	59				59				59	59
Equity Condensed Consolidating
Total Duke Energy Corporation shareholders' equity	5,702				5,646				5,702	5,646
Total equity	5,702				5,646				5,702	5,646
Total Liabilities and Equity	19,091				17,080				19,091	17,080
Condensed Consolidating Cash Flow Statement
Net cash provided by operating activities									1,143	1,251	1,556
Net Cash Provided by (Used in) Investing Activities
Capital expenditures									(1,557)	(1,441)	(1,415)
Purchases of available-for-sale securities									(582)	(579)	(618)
Proceeds from sales and maturities of available-for-sale securities									532	529	595
Notes due from affiliate									56	(104)	188
Other									92	11	4
Net cash used in investing activities									(1,459)	(1,584)	(1,246)
Net Cash Provided by (Used in) Financing Activities
Issuance of long-term debt									988	495
Repayments of Long-term Debt									(502)	(2)	(1)
ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess									(188)	185
Capital contribution to parent									(310)	(585)	(154)
Notes payable to affiliate									334	31
Contributions from parent										1	152
Other									(8)	(2)	(123)
Net Cash Provided by (Used in) Financing Activities									314	123	(126)
Net increase (decrease) in cash and cash equivalents									(2)	(210)	184
Cash and cash equivalents at beginning of period				21				231	21	231	47
Cash and cash equivalents at end of period	19				21				19	21	231
Other Condensed Consolidating [Member]
Condensed Consolidating Income Statement [Abstract]
Operating revenues									(3)	(3)	(2)
Operating expenses
Operation, maintenance and other									8	7	9
Property and other taxes									(9)	(7)	(7)
Total operating expenses									(1)		2
(Gains) losses on sales of other assets											1
Operating income (loss)									(2)	(3)	(3)
Equity in earnings (losses) of unconsolidated affiliates									(560)	(798)	(1,027)
Other income and expenses, net									(1)		(5)
Interest expense, net											(7)
Income Loss From Continuing Operations Before Income Taxes									(563)	(801)	(1,028)
Income Tax Expense or Benefit from Continuing Operations									3	5	5
Income (Loss) from Continuing Operations Attributable to Parent									(566)	(806)	(1,033)
Net Income (Loss)									(566)	(806)	(1,033)
Less: Net Income Attributable to Noncontrolling Interests									3	3	4
Net Income Attributable to Duke Energy Corporation									(569)	(809)	(1,037)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Total comprehensive income									(653)	(783)	(1,009)
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest									3	3	4
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									(656)	(786)	(1,013)
Current Assets
Receivables (net of allowance for doubtful accounts)	(1)								(1)
Notes receivable from affiliated companies	(988)				(272)				(988)	(272)
Prepayments and other current assets	(155)				(64)				(155)	(64)
Total current assets	(1,144)				(336)				(1,144)	(336)
Assets, Noncurrent
Investments in unconsolidated affiliates	(14,238)				(14,043)				(14,238)	(14,043)
Goodwill bs	3,655				3,655				3,655	3,655
Other	(575)				(478)				(575)	(478)
Investments and Other Noncurrent Assets	(11,158)				(10,866)				(11,158)	(10,866)
Net property, plant and equipment	145				160				145	160
Regulated Entity, Other Assets, Noncurrent
Other Regulatory Assets and Deferred Debits	(6)				(6)				(6)	(6)
Total Regulatory Assets And Deferred Debits	(6)				(6)				(6)	(6)
Total Assets	(12,163)				(11,048)				(12,163)	(11,048)
Current Liabilities
Current maturities of long-term debt	1				(1)				1	(1)
Notes Payable, Related Parties, Current	(988)				(272)				(988)	(272)
Other	(154)				(63)				(154)	(63)
Total current liabilities	(1,141)				(336)				(1,141)	(336)
Long-term Debt Noncurrent	1								1
Notes Payable, Related Parties, Noncurrent	(35)				(36)				(35)	(36)
Liabilities, Noncurrent
DeferredTaxLiabilitiesNoncurrent	(536)				(467)				(536)	(467)
Regulatory Liability, Noncurrent	144				160				144	160
Deferred credits and other liabilities	(26)				5				(26)	5
Total deferred credits and other liabilities	(418)				(302)				(418)	(302)
Equity Condensed Consolidating
Total Duke Energy Corporation shareholders' equity	(10,570)				(10,374)				(10,570)	(10,374)
Total equity	(10,570)				(10,374)				(10,570)	(10,374)
Total Liabilities and Equity	(12,163)				(11,048)				(12,163)	(11,048)
Condensed Consolidating Cash Flow Statement
Net cash provided by operating activities									(483)	(1,098)	(222)
Net Cash Provided by (Used in) Investing Activities
Capital expenditures											25
Proceeds from sales and maturities of available-for-sale securities									1
Notes due from affiliate									717	94	(201)
Return of investment in consolidated subsidiaries											(54)
Contributions to consolidated subsidiaries										11	171
Other									(2)	1	(116)
Net cash used in investing activities									716	106	(175)
Net Cash Provided by (Used in) Financing Activities
Repayments of Long-term Debt										1	(1)
ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess										(1)
Distributions to noncontrolling interests									(3)	(3)	(3)
Capital contribution to parent									483	1,098	256
Notes payable to affiliate									(716)	(94)	201
Contributions from parent										(11)	(185)
Other									3	2	129
Net Cash Provided by (Used in) Financing Activities									(233)	992	397
PGN Consolidated [Member]
Condensed Financial Statements, Captions
Preferred securites value, outstanding	300								300
Preferred stock dividend rate percentage									7.10%
Preferred securities, redemption date									February 1, 2013
Preferred securities liquidation preference per share	$ 25								$ 25
Preferred securities shares outstanding	12								12
Preferred securities liquidation value	300								300
Debt instrument, face amount	300								300
Subordinated borrowing, interest rate									7.10%
Condensed Consolidating Income Statement [Abstract]
Operating revenues									9,405	8,948	10,223
Operating expenses
Fuel used in electric generation and purchased power-regulated									4,304	4,043	4,621
Operation, maintenance and other									2,445	2,060	2,045
Depreciation and amortization									747	701	920
Property and other taxes									570	562	580
Pre-tax impairment charge									200	3	5
Total operating expenses									8,266	7,369	8,171
(Gains) losses on sales of other assets									(2)	4	(8)
Operating income (loss)									1,137	1,583	2,044
Other income and expenses, net									130	52	109
Interest expense, net									740	725	747
Income Loss From Continuing Operations Before Income Taxes									527	910	1,406
Income Tax Expense or Benefit from Continuing Operations									172	323	539
Income (Loss) from Continuing Operations Attributable to Parent									355	587	867
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest									52	(5)	(4)
Net Income (Loss)									407	582	863
Less: Net Income Attributable to Noncontrolling Interests									7	7	7
Net Income Attributable to Duke Energy Corporation									400	575	856
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Total comprehensive income									505	542	825
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest									7	7	7
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									498	535	818
Current Assets
Cash and cash equivalents	231				230				231	230	611
Receivables (net of allowance for doubtful accounts)	790				883				790	883
Public Utilities, Inventory	1,441				1,429				1,441	1,429
Prepayments and other current assets	781				778				781	778
Total current assets	3,243				3,320				3,243	3,320
Assets, Noncurrent
Decommissioning Fund Investments	1,888				1,647				1,888	1,647
Goodwill bs	3,655				3,655				3,655	3,655
Other	530				504				530	504
Investments and Other Noncurrent Assets	6,073				5,806				6,073	5,806
Net property, plant and equipment	22,697				22,292				22,697	22,292
Regulated Entity, Other Assets, Noncurrent
Regulatory Assets, Noncurrent	5,292				3,424				5,292	3,424
Other Regulatory Assets and Deferred Debits	100				89				100	89
Total Regulatory Assets And Deferred Debits	5,392				3,513				5,392	3,513
Total Assets	37,405				34,931				37,405	34,931
Current Liabilities
Short-term Debt					671					671
Current maturities of long-term debt	843				961				843	961
Notes Payable, Related Parties, Current	455								455
Other	2,489				2,387				2,489	2,387
Total current liabilities	3,787				4,019				3,787	4,019
Long-term Debt Noncurrent	13,311				11,918				13,311	11,918
Notes Payable, Related Parties, Noncurrent	274				273				274	273
Liabilities, Noncurrent
DeferredTaxLiabilitiesNoncurrent	2,558				2,193				2,558	2,193
Asset Retirement Obligations, Noncurrent	2,413				1,265				2,413	1,265
Regulatory Liability, Noncurrent	2,469				2,727				2,469	2,727
Deferred credits and other liabilities	2,315				2,418				2,315	2,418
Total deferred credits and other liabilities	9,755				8,603				9,755	8,603
Noncontrolling Interest, Amount Represented by Preferred Stock	93				93				93	93
Equity Condensed Consolidating
Total Duke Energy Corporation shareholders' equity	10,181				10,021				10,181	10,021
Stockholders' Equity Attributable to Noncontrolling Interest	4				4				4	4
Total equity	10,185				10,025				10,185	10,025
Total Liabilities and Equity	37,405				34,931				37,405	34,931
Condensed Consolidating Cash Flow Statement
Net cash provided by operating activities									1,840	1,615	2,531
Net Cash Provided by (Used in) Investing Activities
Capital expenditures									(2,366)	(2,256)	(2,445)
Purchases of available-for-sale securities									(1,374)	(5,017)	(7,009)
Proceeds from sales and maturities of available-for-sale securities									1,325	4,970	6,990
Other									133	91	64
Net cash used in investing activities									(2,282)	(2,212)	(2,400)
Net Cash Provided by (Used in) Financing Activities
Issuance of long-term debt									2,074	1,286	591
Issuance of common stock related to employee benefit plans									6	53	434
Repayments of Long-term Debt									(962)	(1,010)	(410)
ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess									(671)	667	(140)
Distributions to noncontrolling interests									(7)	(7)	(6)
PaymentsOfDividendsCommonStock									(445)	(734)	(717)
Notes payable to affiliate									455
Other									(7)	(39)	3
Net Cash Provided by (Used in) Financing Activities									443	216	(245)
Net increase (decrease) in cash and cash equivalents									1	(381)	(114)
Cash and cash equivalents at beginning of period				230				611	230	611	725
Cash and cash equivalents at end of period	$ 231				$ 230				$ 231	$ 230	$ 611