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Investments in Debt and Equity Securities (Tables)
 3 Months Ended
Mar. 31, 2023
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $161 $— $— $215 
Equity securities4,048 60 6,367 3,658 105 5,871 
Corporate debt securities3 65 616 1 85 641 
Municipal bonds1 27 337 — 39 330 
U.S. government bonds9 85 1,495 2 112 1,423 
Other debt securities— 15 147 — 18 156 
Total NDTF Investments$4,061 $252 $9,123 $3,661 $359 $8,636 
Other Investments
Cash and cash equivalents$— $— $134 $— $— $22 
Equity securities25 11 137 21 16 128 
Corporate debt securities— 10 87 — 12 84 
Municipal bonds— 2 80 — 3 78 
U.S. government bonds— — 69 — 2 62 
Other debt securities— 2 42 — 3 41 
Total Other Investments$25 $25 $549 $21 $36 $415 
Total Investments$4,086 $277 $9,672 $3,682 $395 $9,051 
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $161 $— $— $215 
Equity securities4,048 60 6,367 3,658 105 5,871 
Corporate debt securities3 65 616 1 85 641 
Municipal bonds1 27 337 — 39 330 
U.S. government bonds9 85 1,495 2 112 1,423 
Other debt securities— 15 147 — 18 156 
Total NDTF Investments$4,061 $252 $9,123 $3,661 $359 $8,636 
Other Investments
Cash and cash equivalents$— $— $134 $— $— $22 
Equity securities25 11 137 21 16 128 
Corporate debt securities— 10 87 — 12 84 
Municipal bonds— 2 80 — 3 78 
U.S. government bonds— — 69 — 2 62 
Other debt securities— 2 42 — 3 41 
Total Other Investments$25 $25 $549 $21 $36 $415 
Total Investments$4,086 $277 $9,672 $3,682 $395 $9,051 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2023, and 2022, were as follows.
Three Months Ended
(in millions)March 31, 2023March 31, 2022
FV-NI:
 Realized gains $26 $111 
 Realized losses46 85 
AFS:
 Realized gains8 4 
 Realized losses32 23 
Investments Classified by Contractual Maturity Date
The table below summarizes the maturity date for debt securities.
March 31, 2023
DukeDukeDukeDuke
DukeEnergyProgressEnergyEnergyEnergy
(in millions)EnergyCarolinasEnergyProgressFloridaIndiana
Due in one year or less$115 $5 $96 $19 $77 $6 
Due after one through five years793 277 424 238 186 23 
Due after five through 10 years522 262 207 194 13 11 
Due after 10 years1,443 785 564 526 38 24 
Total$2,873 $1,329 $1,291 $977 $314 $64 
Duke Energy Carolinas  
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $69 $— $— $117 
Equity securities2,375 29 3,677 2,147 51 3,367 
Corporate debt securities2 47 384 1 62 401 
Municipal bonds— 5 56 — 10 64 
U.S. government bonds5 38 746 1 51 685 
Other debt securities— 15 143 — 18 148 
Total NDTF Investments$2,382 $134 $5,075 $2,149 $192 $4,782 
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $69 $— $— $117 
Equity securities2,375 29 3,677 2,147 51 3,367 
Corporate debt securities2 47 384 1 62 401 
Municipal bonds— 5 56 — 10 64 
U.S. government bonds5 38 746 1 51 685 
Other debt securities— 15 143 — 18 148 
Total NDTF Investments$2,382 $134 $5,075 $2,149 $192 $4,782 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2023, and 2022, were as follows.
Three Months Ended
(in millions)March 31, 2023March 31, 2022
FV-NI:
 Realized gains$18 $75 
 Realized losses 29 49 
AFS:
 Realized gains5 3 
 Realized losses20 16 
Progress Energy  
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $92 $— $— $98 
Equity securities1,673 31 2,690 1,511 54 2,504 
Corporate debt securities1 18 232 — 23 240 
Municipal bonds1 22 281 — 29 266 
U.S. government bonds4 47 749 1 61 738 
Other debt securities— — 4 — — 8 
Total NDTF Investments$1,679 $118 $4,048 $1,512 $167 $3,854 
Other Investments
Cash and cash equivalents$— $— $8 $— $— $11 
Municipal bonds— — 25 — — 25 
Total Other Investments$— $— $33 $— $— $36 
Total Investments$1,679 $118 $4,081 $1,512 $167 $3,890 
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $92 $— $— $98 
Equity securities1,673 31 2,690 1,511 54 2,504 
Corporate debt securities1 18 232 — 23 240 
Municipal bonds1 22 281 — 29 266 
U.S. government bonds4 47 749 1 61 738 
Other debt securities— — 4 — — 8 
Total NDTF Investments$1,679 $118 $4,048 $1,512 $167 $3,854 
Other Investments
Cash and cash equivalents$— $— $8 $— $— $11 
Municipal bonds— — 25 — — 25 
Total Other Investments$— $— $33 $— $— $36 
Total Investments$1,679 $118 $4,081 $1,512 $167 $3,890 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2023, and 2022, were as follows.
Three Months Ended
(in millions)March 31, 2023March 31, 2022
FV-NI:
 Realized gains$8 $36 
 Realized losses17 36 
AFS:
 Realized gains3 1 
 Realized losses12 6 
Duke Energy Progress  
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $72 $— $— $56 
Equity securities1,586 31 2,590 1,431 54 2,411 
Corporate debt securities1 17 222 — 22 230 
Municipal bonds1 22 281 — 29 266 
U.S. government bonds4 28 470 1 37 460 
Other debt securities— — 4 — — 7 
Total NDTF Investments$1,592 $98 $3,639 $1,432 $142 $3,430 
Other Investments
Cash and cash equivalents$— $— $7 $— $— $9 
Total Other Investments$— $— $7 $— $— $9 
Total Investments$1,592 $98 $3,646 $1,432 $142 $3,439 
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $72 $— $— $56 
Equity securities1,586 31 2,590 1,431 54 2,411 
Corporate debt securities1 17 222 — 22 230 
Municipal bonds1 22 281 — 29 266 
U.S. government bonds4 28 470 1 37 460 
Other debt securities— — 4 — — 7 
Total NDTF Investments$1,592 $98 $3,639 $1,432 $142 $3,430 
Other Investments
Cash and cash equivalents$— $— $7 $— $— $9 
Total Other Investments$— $— $7 $— $— $9 
Total Investments$1,592 $98 $3,646 $1,432 $142 $3,439 
Schedule of Realized Gain (Loss)
Realized gains and losses, which were determined on a specific identification basis, from sales of FV-NI and AFS securities for the three months ended March 31, 2023, and 2022, were as follows.
Three Months Ended
(in millions)March 31, 2023March 31, 2022
FV-NI:
 Realized gains$8 $36 
 Realized losses17 35 
AFS:
 Realized gains3 1 
 Realized losses12 5 
Duke Energy Florida  
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $20 $— $— $42 
Equity securities87 — 100 80 — 93 
Corporate debt securities— 1 10 — 1 10 
U.S. government bonds— 19 279 — 24 278 
Other debt securities— — — — — 1 
Total NDTF Investments(a)
$87 $20 $409 $80 $25 $424 
Other Investments
Cash and cash equivalents$— $— $— $— $— $1 
Municipal bonds— — 25 — — 25 
Total Other Investments$— $— $25 $— $— $26 
Total Investments$87 $20 $434 $80 $25 $450 
(a)During the three months ended March 31, 2023, and the year ended December 31, 2022, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are classified as FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
NDTF
Cash and cash equivalents$— $— $20 $— $— $42 
Equity securities87 — 100 80 — 93 
Corporate debt securities— 1 10 — 1 10 
U.S. government bonds— 19 279 — 24 278 
Other debt securities— — — — — 1 
Total NDTF Investments(a)
$87 $20 $409 $80 $25 $424 
Other Investments
Cash and cash equivalents$— $— $— $— $— $1 
Municipal bonds— — 25 — — 25 
Total Other Investments$— $— $25 $— $— $26 
Total Investments$87 $20 $434 $80 $25 $450 
(a)During the three months ended March 31, 2023, and the year ended December 31, 2022, Duke Energy Florida received reimbursements from the NDTF for costs related to ongoing decommissioning activity of Crystal River Unit 3.
Duke Energy Indiana  
Debt Securities, Available-for-sale [Line Items]  
Debt Securities, Trading, and Equity Securities, FV-NI
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
Investments
Cash and cash equivalents$— $— $1 $— $— $1 
Equity securities3 11 85 2 16 79 
Corporate debt securities— — 9 — 1 8 
Municipal bonds— 2 46 — 3 45 
U.S. government bonds— — 9 — — 7 
Total Investments$3 $13 $150 $2 $20 $140 
Debt Securities, Available-for-sale
The following table presents the estimated fair value of investments in debt and equity securities; equity investments are measured at FV-NI and debt investments are classified as AFS.
March 31, 2023December 31, 2022
GrossGrossGrossGross
UnrealizedUnrealizedEstimatedUnrealizedUnrealizedEstimated
HoldingHoldingFairHoldingHoldingFair
(in millions)GainsLossesValueGainsLossesValue
Investments
Cash and cash equivalents$— $— $1 $— $— $1 
Equity securities3 11 85 2 16 79 
Corporate debt securities— — 9 — 1 8 
Municipal bonds— 2 46 — 3 45 
U.S. government bonds— — 9 — — 7 
Total Investments$3 $13 $150 $2 $20 $140