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Revenue (Aging of Trade Receivables) (Details) - USD ($) $ in Millions	Jun. 30, 2024	Feb. 29, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	$ 1,155		$ 1,273
Current	2,503		2,306
Deferred Payment Arrangements	99		104
Trade and Other Receivables	4,343		4,336
CRC | VIE primary beneficiary
Financing Receivable, Past Due [Line Items]
Accounts receivable from securitization	0	$ 682	663
30-60 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	75		78
60-90 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	80		47
Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	202		275
Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	229		253
Duke Energy Carolinas
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	414		399
Current	772		680
Deferred Payment Arrangements	36		34
Trade and Other Receivables	1,386		1,312
Duke Energy Carolinas | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	25		20
Duke Energy Carolinas | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	19		15
Duke Energy Carolinas | Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	60		97
Duke Energy Carolinas | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	60		67
Progress Energy
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	426		401
Current	1,210		1,009
Deferred Payment Arrangements	40		43
Trade and Other Receivables	1,878		1,664
Progress Energy | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	22		34
Progress Energy | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	40		17
Progress Energy | Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	79		91
Progress Energy | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	61		69
Duke Energy Progress
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	278		280
Current	727		612
Deferred Payment Arrangements	26		26
Trade and Other Receivables	1,117		1,016
Duke Energy Progress | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	15		23
Duke Energy Progress | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	10		10
Duke Energy Progress | Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	35		41
Duke Energy Progress | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	26		24
Duke Energy Florida
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	148		121
Current	480		395
Deferred Payment Arrangements	14		17
Trade and Other Receivables	758		646
Duke Energy Florida | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	7		11
Duke Energy Florida | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	30		7
Duke Energy Florida | Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	44		50
Duke Energy Florida | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	35		45
Duke Energy Ohio
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	127		4
Current	182		48
Deferred Payment Arrangements	18		6
Trade and Other Receivables	459		121
Duke Energy Ohio | CRC
Financing Receivable, Past Due [Line Items]
Unbilled Receivables			141
Duke Energy Ohio | CRC | VIE primary beneficiary
Financing Receivable, Past Due [Line Items]
Accounts receivable from securitization		366
Duke Energy Ohio | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	12		3
Duke Energy Ohio | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	10		2
Duke Energy Ohio | Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	26		12
Duke Energy Ohio | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	84		46
Duke Energy Indiana
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	177		22
Current	205		87
Deferred Payment Arrangements	5		0
Trade and Other Receivables	438		161
Duke Energy Indiana | CRC
Financing Receivable, Past Due [Line Items]
Unbilled Receivables			197
Duke Energy Indiana | CRC | VIE primary beneficiary
Financing Receivable, Past Due [Line Items]
Accounts receivable from securitization		$ 316
Duke Energy Indiana | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	11		7
Duke Energy Indiana | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	5		4
Duke Energy Indiana | Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	17		14
Duke Energy Indiana | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	18		27
Piedmont
Financing Receivable, Past Due [Line Items]
Unbilled Receivables	11		108
Current	112		199
Deferred Payment Arrangements	0		0
Trade and Other Receivables	159		322
Piedmont | 30-60 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	5		2
Piedmont | 60-90 days
Financing Receivable, Past Due [Line Items]
Trade and other receivables	6		1
Piedmont | Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	19		9
Piedmont | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Trade and other receivables	$ 6		$ 3

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