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Asset Retirement Obligations (ARO Rollforward) (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2024 USD ($)
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |
Balance at beginning of period | $ 9,156
Accretion expense | 204
Liabilities settled | (306)
Revision in estimates of cash flows | 1,300
Balance at end of period | 10,354
Duke Energy Carolinas |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |
Balance at beginning of period | 4,013
Accretion expense | 90
Liabilities settled | (95)
Revision in estimates of cash flows | 104
Balance at end of period | 4,112
Progress Energy |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |
Balance at beginning of period | 4,145
Accretion expense | 96
Liabilities settled | (167)
Revision in estimates of cash flows | 717
Balance at end of period | 4,791
Duke Energy Progress |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |
Balance at beginning of period | 3,870
Accretion expense | 91
Liabilities settled | (120)
Revision in estimates of cash flows | 715
Balance at end of period | 4,556
Duke Energy Florida |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |
Balance at beginning of period | 275
Accretion expense | 5
Liabilities settled | (47)
Revision in estimates of cash flows | 2
Balance at end of period | 235
Duke Energy Ohio |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |
Balance at beginning of period | 136
Accretion expense | 3
Liabilities settled | (3)
Revision in estimates of cash flows | 0
Balance at end of period | 136
Duke Energy Indiana |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |
Balance at beginning of period | 809
Accretion expense | 17
Liabilities settled | (40)
Revision in estimates of cash flows | 496
Balance at end of period | 1,282
Piedmont |
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] |
Balance at beginning of period | 26
Accretion expense | 1
Liabilities settled | 0
Revision in estimates of cash flows | 0
Balance at end of period | $ 27

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- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481999/410-20-25-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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- Definition Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481879/410-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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- Definition Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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- Definition Amount of increase (decrease) in the asset retirement obligation from changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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