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Business Segments (Tables)
 6 Months Ended
Jun. 30, 2021
Segment Reporting Information [Line Items]  
Business Segment Data
Business segment information is presented in the following tables. Segment assets presented exclude intercompany assets.
Three Months Ended June 30, 2021
ElectricGasTotal
Utilities andUtilities andCommercialReportable
(in millions)InfrastructureInfrastructureRenewablesSegmentsOtherEliminationsTotal
Unaffiliated revenues$5,328 $305 $119 $5,752 $6 $— $5,758 
Intersegment revenues7 22 — 29 21 (50)— 
Total revenues$5,335 $327 $119 $5,781 $27 $(50)$5,758 
Segment income (loss)(a)
$935 $17 $47 $999 $(248)$— $751 
Less: Noncontrolling interests67 
Add: Preferred stock dividend14 
Net Income$698 
Segment assets$140,591 $14,321 $6,956 $161,868 $3,524 $(7)$165,385 
Three Months Ended June 30, 2020
ElectricGasTotal
Utilities andUtilities andCommercialReportable
(in millions)InfrastructureInfrastructureRenewablesSegmentsOtherEliminationsTotal
Unaffiliated revenues$5,026 $265 $123 $5,414 $7 $— $5,421 
Intersegment revenues8 24 — 32 19 (51)— 
Total revenues$5,034 $289 $123 $5,446 $26 $(51)$5,421 
Segment income (loss)(b)
$753 $(1,576)$90 $(733)$(84)$— $(817)
Less: Noncontrolling interests90 
Add: Preferred stock dividend15 
Net Income$(892)
(a)    Gas Utilities and Infrastructure includes $16 million, recorded within Equity in earnings (losses) of unconsolidated affiliates on the Condensed Consolidated Statements of Operations, related to gas pipeline investments. See Note 3 for additional information. Other includes $131 million recorded within Impairment of assets and other charges, $27 million within Operations, maintenance and other, and $17 million within Depreciation and amortization on the Condensed Consolidated Statements of Operations, related to the workplace and workforce realignment. See Note 1 for additional information.
(b)    Gas Utilities and Infrastructure includes $2 billion recorded within Equity in earnings (losses) of unconsolidated affiliates on the Condensed Consolidated Statements of Operations, related to gas pipeline investments. See Note 3 for additional information.
Six Months Ended June 30, 2021
ElectricGasTotal
Utilities andUtilities andCommercialReportable
(in millions)InfrastructureInfrastructureRenewablesSegmentsOtherEliminationsTotal
Unaffiliated revenues$10,601 $1,057 $238 $11,896 $12 $— $11,908 
Intersegment revenues15 45 — 60 41 (101)— 
Total revenues$10,616 $1,102 $238 $11,956 $53 $(101)$11,908 
Segment income (loss)(a)
$1,755 $262 $74 $2,091 $(387)$— $1,704 
Less: Noncontrolling interests118 
Add: Preferred stock dividend53 
Net Income$1,639 
Six Months Ended June 30, 2020
ElectricGasTotal
Utilities andUtilities andCommercialReportable
(in millions)InfrastructureInfrastructureRenewablesSegmentsOtherEliminationsTotal
Unaffiliated revenues$10,200 $905 $252 $11,357 $13 $— $11,370 
Intersegment revenues17 48 — 65 36 (101)— 
Total revenues$10,217 $953 $252 $11,422 $49 $(101)$11,370 
Segment income (loss)(b)
$1,458 $(1,327)$147 $278 $(196)$— $82 
Less: Noncontrolling interests138 
Add: Preferred stock dividend54 
Net Income$(2)
(a)    Gas Utilities and Infrastructure includes $22 million, recorded within Equity in earnings (losses) of unconsolidated affiliates on the Condensed Consolidated Statements of Operations, related to gas pipeline investments. See Note 3 for additional information. Commercial Renewables includes a $35 million loss related to Texas Storm Uri, of which ($8 million) is recorded within Nonregulated electric and other revenues, $2 million within Operations, maintenance and other, $29 million within Equity in earnings (losses) of unconsolidated affiliates and $12 million within Loss Attributable to Noncontrolling Interests on the Condensed Consolidated Statements of Operations. See Note 4 for additional information. Other includes $131 million recorded within Impairment of assets and other charges, $27 million within Operations, maintenance and other, and $17 million within Depreciation and amortization on the Condensed Consolidated Statements of Operations, related to the workplace and workplace realignment. See Note 1 for additional information.
(b)    Gas Utilities and Infrastructure includes $2 billion recorded within Equity in earnings (losses) of unconsolidated affiliates on the Condensed Consolidated Statements of Operations, related to gas pipeline investments. See Note 3 for additional information. Other includes a $98 million reversal, included in Operations, maintenance and other on the Condensed Consolidated Statements of Operations, of 2018 severance costs due to a partial settlement in the Duke Energy Carolinas' 2019 North Carolina rate case. See Note 3 for additional information.
Duke Energy Ohio  
Segment Reporting Information [Line Items]  
Business Segment Data
Three Months Ended June 30, 2021
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Total revenues$343 $113 $456 $— $— $456 
Segment income/Net income$24 $23 $47 $(8)$— $39 
Segment assets$6,645 $3,668 $10,313 $28 $(19)$10,322 
Three Months Ended June 30, 2020
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total revenues$330 $93 $423 $— $423 
Segment income/Net income$44 $23 $67 $(1)$66 
Six Months Ended June 30, 2021
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total revenues$706 $282 $988 $— $988 
Segment income/Net (loss) income$74 $66 $140 $(10)$130 
Six Months Ended June 30, 2020
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherTotal
Total revenues$676 $245 $921 $— $921 
Segment income/Net (loss) income$74 $59 $133 $(2)$131