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Investments in Debt and Equity Securities (Tables)

12 Months Ended

Dec. 31, 2022

Summary of Investments in Debt and Equity Securities

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.


	December 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized				Unrealized		Unrealized
	Holding		Holding		Estimated		Holding		Holding		Estimated
(in millions)	Gains		Losses		Fair Value		Gains		Losses		Fair Value
NDTF
Cash and cash equivalents	$	—	$	—	$	215	$	—	$	—	$	160
Equity securities	3,658		105		5,871		4,905		43		7,350
Corporate debt securities	1		85		641		39		6		829
Municipal bonds	—		39		330		14		1		314
U.S. government bonds	2		112		1,423		31		12		1,568
Other debt securities	—		18		156		3		1		180
Total NDTF Investments	$	3,661	$	359	$	8,636	$	4,992	$	63	$	10,401
Other Investments
Cash and cash equivalents	$	—	$	—	$	22	$	—	$	—	$	36
Equity securities	21		16		128		36		—		156
Corporate debt securities	—		12		84		2		1		119
Municipal bonds	—		3		78		3		1		80
U.S. government bonds	—		2		62		—		—		56
Other debt securities	—		3		41		—		1		45
Total Other Investments	$	21	$	36	$	415	$	41	$	3	$	492
Total Investments	$	3,682	$	395	$	9,051	$	5,033	$	66	$	10,893

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 years ended December 31, 2022, 2021 and 2020, were as follows.


	Years Ended December 31,
(in millions)	2022		2021		2020
FV-NI:
Realized gains	$	201	$	724	$	366
Realized losses	316		141		174
AFS:
Realized gains	28		56		96
Realized losses	151		54		51

Investments Classified by Contractual Maturity Date

The table below summarizes the maturity date for debt securities.


	December 31, 2022
			Duke				Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Indiana
Due in one year or less	$	137	$	7	$	89	$	24	$	65	$	8
Due after one through five years	807		287		443		244		199		22
Due after five through 10 years	469		230		193		178		15		6
Due after 10 years	1,402		774		552		517		35		24
Total	$	2,815	$	1,298	$	1,277	$	963	$	314	$	60

Duke Energy Carolinas

Investment [Line Items]

Summary of Investments in Debt and Equity Securities

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.


	December 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized				Unrealized		Unrealized
	Holding		Holding		Estimated		Holding		Holding		Estimated
(in millions)	Gains		Losses		Fair Value		Gains		Losses		Fair Value
NDTF
Cash and cash equivalents	$	—	$	—	$	117	$	—	$	—	$	53
Equity securities	2,147		51		3,367		2,887		19		4,265
Corporate debt securities	1		62		401		24		4		506
Municipal bonds	—		10		64		2		—		48
U.S. government bonds	1		51		685		16		3		712
Other debt securities	—		18		148		3		1		175
Total NDTF Investments	$	2,149	$	192	$	4,782	$	2,932	$	27	$	5,759

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 years ended December 31, 2022, 2021 and 2020, were as follows.


	Years Ended December 31,
(in millions)	2022		2021		2020
FV-NI:
Realized gains	$	124	$	440	$	64
Realized losses	177		96		99
AFS:
Realized gains	22		38		60
Realized losses	86		37		37

Progress Energy

Investment [Line Items]

Summary of Investments in Debt and Equity Securities

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.


	December 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized				Unrealized		Unrealized
	Holding		Holding		Estimated		Holding		Holding		Estimated
(in millions)	Gains		Losses		Fair Value		Gains		Losses		Fair Value
NDTF
Cash and cash equivalents	$	—	$	—	$	98	$	—	$	—	$	107
Equity securities	1,511		54		2,504		2,018		24		3,085
Corporate debt securities	—		23		240		15		2		323
Municipal bonds	—		29		266		12		1		266
U.S. government bonds	1		61		738		15		9		856
Other debt securities	—		—		8		—		—		5
Total NDTF Investments	$	1,512	$	167	$	3,854	$	2,060	$	36	$	4,642
Other Investments
Cash and cash equivalents	$	—	$	—	$	11	$	—	$	—	$	20
Municipal bonds	—		—		25		2		—		26
Total Other Investments	$	—	$	—	$	36	$	2	$	—	$	46
Total Investments	$	1,512	$	167	$	3,890	$	2,062	$	36	$	4,688

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 years ended December 31, 2022, 2021 and 2020, were as follows.


	Years Ended December 31,
(in millions)	2022		2021		2020
FV-NI:
Realized gains	$	77	$	284	$	302
Realized losses	139		45		75
AFS:
Realized gains	6		16		24
Realized losses	48		14		13

Duke Energy Progress

Investment [Line Items]

Summary of Investments in Debt and Equity Securities

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.


	December 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized				Unrealized		Unrealized
	Holding		Holding		Estimated		Holding		Holding		Estimated
(in millions)	Gains		Losses		Fair Value		Gains		Losses		Fair Value
NDTF
Cash and cash equivalents	$	—	$	—	$	56	$	—	$	—	$	94
Equity securities	1,431		54		2,411		1,915		23		2,970
Corporate debt securities	—		22		230		15		2		282
Municipal bonds	—		29		266		12		1		266
U.S. government bonds	1		37		460		15		3		472
Other debt securities	—		—		7		—		—		5
Total NDTF Investments	$	1,432	$	142	$	3,430	$	1,957	$	29	$	4,089
Other Investments
Cash and cash equivalents	$	—	$	—	$	9	$	—	$	—	$	16
Total Other Investments	$	—	$	—	$	9	$	—	$	—	$	16
Total Investments	$	1,432	$	142	$	3,439	$	1,957	$	29	$	4,105

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 years ended December 31, 2022, 2021 and 2020, were as follows.


	Years Ended December 31,
(in millions)	2022		2021		2020
FV-NI:
Realized gains	$	76	$	283	$	52
Realized losses	136		44		59
AFS:
Realized gains	6		15		24
Realized losses	44		13		13

Duke Energy Florida

Investment [Line Items]

Summary of Investments in Debt and Equity Securities

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.


	December 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized				Unrealized		Unrealized
	Holding		Holding		Estimated		Holding		Holding		Estimated
(in millions)	Gains		Losses		Fair Value		Gains		Losses		Fair Value
NDTF
Cash and cash equivalents	$	—	$	—	$	42	$	—	$	—	$	13
Equity securities	80		—		93		103		1		115
Corporate debt securities	—		1		10		—		—		41

U.S. government bonds	—		24		278		—		6		384
Other debt securities	—		—		1		—		—		—
Total NDTF Investments(a)	$	80	$	25	$	424	$	103	$	7	$	553
Other Investments
Cash and cash equivalents	$	—	$	—	$	1	$	—	$	—	$	3
Municipal bonds	—		—		25		2		—		26
Total Other Investments	$	—	$	—	$	26	$	2	$	—	$	29
Total Investments	$	80	$	25	$	450	$	105	$	7	$	582

(a) During the years ended December 31, 2022, and 2021, Duke Energy Florida continued to receive reimbursements from the NDTF for costs related to ongoing decommissioning activity of the Crystal River Unit 3.

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 years ended December 31, 2022, 2021 and 2020, were as follows.


	Years Ended December 31,
(in millions)	2022		2021		2020
FV-NI:
Realized gains	$	1	$	1	$	250
Realized losses	3		1		16
AFS:
Realized gains	—		1		—
Realized losses	4		1		—

Duke Energy Indiana

Investment [Line Items]

Summary of Investments in Debt and Equity Securities

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.


	December 31, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized				Unrealized		Unrealized
	Holding		Holding		Estimated		Holding		Holding		Estimated
(in millions)	Gains		Losses		Fair Value		Gains		Losses		Fair Value
Investments
Cash and cash equivalents	$	—	$	—	$	1	$	—	$	—	$	—
Equity securities	2		16		79		6		—		97
Corporate debt securities	—		1		8		—		—		6
Municipal bonds	—		3		45		1		1		46
U.S. government bonds	—		—		7		—		—		12


Total Investments	$	2	$	20	$	140	$	7	$	1	$	161