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Business Segments (Tables)
 12 Months Ended
Dec. 31, 2021
Segment Reporting Information [Line Items]  
Business Segment Data
Business segment information is presented in the following tables. Segment assets presented exclude intercompany assets.
Year Ended December 31, 2021
ElectricGasTotal
Utilities andUtilities andCommercialReportable
(in millions)InfrastructureInfrastructureRenewablesSegmentsOtherEliminationsTotal
Unaffiliated Revenues$22,570 $2,022 $476 $25,068 $29 $— $25,097 
Intersegment Revenues33 90 — 123 82 (205)— 
Total Revenues$22,603 $2,112 $476 $25,191 $111 $(205)$25,097 
Interest Expense$1,432 $142 $72 $1,646 $643 $(9)$2,280 
Depreciation and amortization4,251 303 225 4,779 237 (26)4,990 
Equity in earnings (losses) of unconsolidated affiliates7 8 (34)(19)47 — 28 
Income tax expense (benefit)494 55 (78)471 (279)— 192 
Segment income (loss)(a)(b)(c)(d)
3,850 396 201 4,447 (652)— 3,795 
Less noncontrolling interest329 
Add back preferred stock dividend106 
Income from discontinued operations, net of tax7 
Net income$3,579 
Capital investments expenditures and acquisitions$7,653 $1,271 $543 $9,467 $285 $— $9,752 
Segment assets143,841 15,179 6,977 165,997 3,590 — 169,587 
(a)    Electric Utilities and Infrastructure includes $160 million of expense recorded within Impairment of assets and other charges, $77 million of income within Other Income and expenses, $5 million of expense within Operations, maintenance and other, $13 million of income within regulated operating revenues, $3 million of expense within interest expense and $6 million of expense within Depreciation and amortization on the Duke Energy Carolinas' Consolidated Statement of Operations related to the South Carolina Supreme Court decision on coal ash and insurance proceeds; it also includes $42 million of expense recorded within Impairment of assets and other charges, $34 million of income within Other Income and expenses, $7 million of expense within Operations, maintenance, and other, $15 million of income within Regulated electric operating revenues, $5 million of expense within interest expense and $1 million of expense within Depreciation and amortization on the Duke Energy Progress' Consolidated Statement of Operations. See Notes 3 and 4 for more information.
(b)    Gas Utilities and Infrastructure includes $20 million, recorded within Equity in earnings (losses) of unconsolidated affiliates on the Consolidated Statements of Operations, related to natural gas pipeline investments. See Note 3 for additional information.
(c)    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 Consolidated Statements of Operations. See Note 4 for additional information.
(d)    Other includes $133 million recorded within Impairment of assets and other charges, $42 million within Operations, maintenance and other, and $17 million within Depreciation and amortization on the Consolidated Statements of Operations, related to the workplace and workplace realignment. See Note 10 for additional information.
Year Ended December 31, 2020
ElectricGasTotal
Utilities andUtilities andCommercialReportable
(in millions)InfrastructureInfrastructureRenewablesSegmentsOtherEliminationsTotal
Unaffiliated Revenues$21,687 $1,653 $502 $23,842 $26 $— $23,868 
Intersegment Revenues33 95 — 128 71 (199)— 
Total Revenues$21,720 $1,748 $502 $23,970 $97 $(199)$23,868 
Interest Expense$1,320 $135 $66 $1,521 $657 $(16)$2,162 
Depreciation and amortization4,068 258 199 4,525 209 (29)4,705 
Equity in earnings (losses) of unconsolidated affiliates(1)(2,017)— (2,018)13 — (2,005)
Income tax expense (benefit)340 (349)(65)(74)(162)— (236)
Segment income (loss)(a)(b)(c)
2,669 (1,266)286 1,689 (426)— 1,263 
Less noncontrolling interest295 
Add back preferred stock dividend107 
Income from discontinued operations, net of tax7 
Net income$1,082 
Capital investments expenditures and acquisitions$7,629 $1,309 $1,219 $10,157 $264 $— $10,421 
Segment assets138,225 13,849 6,716 158,790 3,598 — 162,388 
(a)    Electric Utilities and Infrastructure includes $948 million of Impairment of assets and other charges and a reversal of $152 million included in Regulated electric operating revenue related to the CCR Settlement Agreement filed with the NCUC. Additionally, Electric Utilities and Infrastructure includes $19 million of Impairment of assets and other charges related to the Clemson University Combined Heat and Power Plant, $5 million of Impairment charges related to the natural gas pipeline assets and $16 million of shareholder contributions within Operations, maintenance and other related to Duke Energy Carolinas' and Duke Energy Progress' 2019 North Carolina rate cases. See Note 3 for additional information.
(b)    Gas Utilities and Infrastructure includes $2.1 billion recorded within Equity in (losses) earnings of unconsolidated affiliates and $7 million of Impairment of assets and other charges related to natural gas pipeline investments. See Notes 3 and 12 for additional information.
(c)    Other includes a $98 million reversal of 2018 severance costs due to a partial settlement in the Duke Energy Carolinas' 2019 North Carolina rate case. See Note 20 for additional information.
Year Ended December 31, 2019
ElectricGasTotal
Utilities andUtilities andCommercialReportable
(in millions)InfrastructureInfrastructureRenewablesSegmentsOtherEliminationsTotal
Unaffiliated Revenues$22,798 $1,770 $487 $25,055 $24 $— $25,079 
Intersegment Revenues33 96 — 129 71 (200)— 
Total Revenues$22,831 $1,866 $487 $25,184 $95 $(200)$25,079 
Interest Expense$1,345 $117 $95 $1,557 $705 $(58)$2,204 
Depreciation and amortization3,951 256 168 4,375 178 (5)4,548 
Equity in earnings (losses) of unconsolidated affiliates9 114 (4)119 43 — 162 
Income tax expense (benefit)785 22 (115)692 (173)— 519 
Segment income (loss)(a)(b)
3,536 432 198 4,166 (452)— 3,714 
Less noncontrolling interest177 
Add back preferred stock dividend41 
Loss from discontinued operations, net of tax(7)
Net income$3,571 
Capital investments expenditures and acquisitions$8,263 $1,539 $1,423 $11,225 $221 $— $11,446 
Segment assets135,561 13,921 6,020 155,502 3,148 188 158,838 
(a)    Electric Utilities and Infrastructure includes a $27 million reduction of a prior year impairment at Citrus County CC related to the plant's cost cap.
(b)    Gas Utilities and Infrastructure includes an after-tax impairment charge of $19 million for the remaining investment in Constitution. See Note 12 for additional information.
Schedule of Revenue, By Products and Services
Products and Services
The following table summarizes revenues of the reportable segments by type.
RetailWholesaleRetailTotal
(in millions)ElectricElectricNatural GasOther Revenues
2021
Electric Utilities and Infrastructure$19,410 $2,216 $— $977 $22,603 
Gas Utilities and Infrastructure— — 2,025 87 2,112 
Commercial Renewables— 411 — 65 476 
Total Reportable Segments$19,410 $2,627 $2,025 $1,129 $25,191 
2020
Electric Utilities and Infrastructure$18,898 $1,878 $— $944 $21,720 
Gas Utilities and Infrastructure— — 1,691 57 1,748 
Commercial Renewables— 434 — 68 502 
Total Reportable Segments$18,898 $2,312 $1,691 $1,069 $23,970 
2019
Electric Utilities and Infrastructure$19,745 $2,231 $— $855 $22,831 
Gas Utilities and Infrastructure— — 1,782 84 1,866 
Commercial Renewables— 389 — 98 487 
Total Reportable Segments$19,745 $2,620 $1,782 $1,037 $25,184 
Duke Energy Ohio  
Segment Reporting Information [Line Items]  
Business Segment Data
Year Ended December 31, 2021
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Total revenues$1,493 $544 $2,037 $— $— $2,037 
Interest expense$87 $24 $111 $— $— $111 
Depreciation and amortization217 90 307 — — 307 
Income tax expense (benefit)15 19 34 (4)— 30 
Segment income (loss)/Net income141 78 219 (15)— 204 
Capital expenditures$486 $362 $848 $— $— $848 
Segment assets6,882 3,892 10,774 29 (29)10,774 
Year Ended December 31, 2020
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Total revenues$1,405 $453 $1,858 $— $— $1,858 
Interest expense$85 $17 $102 $— $— $102 
Depreciation and amortization200 78 278 — — 278 
Income tax expense (benefit)19 26 45 (2)— 43 
Segment income (loss)/Net Income162 96 258 (6)— 252 
Capital expenditures$548 $286 $834 $— $— $834 
Segment assets6,615 3,380 9,995 32 (2)10,025 
Year Ended December 31, 2019
ElectricGasTotal
Utilities andUtilities andReportable
(in millions)InfrastructureInfrastructureSegmentsOtherEliminationsTotal
Total revenues$1,456 $484 $1,940 $— $— $1,940 
Interest expense$80 $29 $109 $— $— $109 
Depreciation and amortization182 83 265 — — 265 
Income tax expense (benefit)20 21 41 (1)— 40 
Segment income (loss)159 85 244 (5)— 239 
Loss from discontinued operations, net of tax(1)
Net income$238 
Capital expenditures$680 $272 $952 $— $— $952 
Segment assets6,188 3,116 9,304 34 — 9,338