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Investments in Debt and Equity Securities (Tables)

3 Months Ended

Mar. 31, 2022

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	128	$	—	$	—	$	160
Equity securities	4,486		62		6,853		4,905		43		7,350
Corporate debt securities	9		43		786		39		6		829
Municipal bonds	2		16		321		14		1		314
U.S. government bonds	10		57		1,561		31		12		1,568

Other debt securities	—		7		177		3		1		180
Total NDTF Investments	$	4,507	$	185	$	9,826	$	4,992	$	63	$	10,401
Other Investments
Cash and cash equivalents	$	—	$	—	$	110	$	—	$	—	$	36
Equity securities	31		4		147		36		—		156
Corporate debt securities	—		7		124		2		1		119
Municipal bonds	1		2		83		3		1		80
U.S. government bonds	—		2		45		—		—		56
Other debt securities	—		2		36		—		1		45
Total Other Investments	$	32	$	17	$	545	$	41	$	3	$	492
Total Investments	$	4,539	$	202	$	10,371	$	5,033	$	66	$	10,893

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	128	$	—	$	—	$	160
Equity securities	4,486		62		6,853		4,905		43		7,350
Corporate debt securities	9		43		786		39		6		829
Municipal bonds	2		16		321		14		1		314
U.S. government bonds	10		57		1,561		31		12		1,568

Other debt securities	—		7		177		3		1		180
Total NDTF Investments	$	4,507	$	185	$	9,826	$	4,992	$	63	$	10,401
Other Investments
Cash and cash equivalents	$	—	$	—	$	110	$	—	$	—	$	36
Equity securities	31		4		147		36		—		156
Corporate debt securities	—		7		124		2		1		119
Municipal bonds	1		2		83		3		1		80
U.S. government bonds	—		2		45		—		—		56
Other debt securities	—		2		36		—		1		45
Total Other Investments	$	32	$	17	$	545	$	41	$	3	$	492
Total Investments	$	4,539	$	202	$	10,371	$	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 three months ended March 31, 2022, and 2021, were as follows.


	Three Months Ended
(in millions)		March 31, 2022		March 31, 2021
FV-NI:
Realized gains		$	111	$	140
Realized losses		85		23
AFS:
Realized gains		4		18
Realized losses		23		13

Investments Classified by Contractual Maturity Date

The table below summarizes the maturity date for debt securities.


	March 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	$	162	$	7	$	139	$	32	$	107	$	8
Due after one through five years	969		367		528		270		258		24
Due after five through 10 years	536		235		228		212		16		6
Due after 10 years	1,466		810		557		517		40		25
Total	$	3,133	$	1,419	$	1,452	$	1,031	$	421	$	63

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	60	$	—	$	—	$	53
Equity securities	2,632		30		3,962		2,887		19		4,265
Corporate debt securities	6		30		503		24		4		506
Municipal bonds	—		5		52		2		—		48
U.S. government bonds	4		21		692		16		3		712
Other debt securities	—		7		172		3		1		175
Total NDTF Investments	$	2,642	$	93	$	5,441	$	2,932	$	27	$	5,759

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	60	$	—	$	—	$	53
Equity securities	2,632		30		3,962		2,887		19		4,265
Corporate debt securities	6		30		503		24		4		506
Municipal bonds	—		5		52		2		—		48
U.S. government bonds	4		21		692		16		3		712
Other debt securities	—		7		172		3		1		175
Total NDTF Investments	$	2,642	$	93	$	5,441	$	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 three months ended March 31, 2022, and 2021, were as follows.


	Three Months Ended
(in millions)		March 31, 2022		March 31, 2021
FV-NI:
Realized gains		$	75	$	128
Realized losses		49		16
AFS:
Realized gains		3		13
Realized losses		16		9

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	68	$	—	$	—	$	107
Equity securities	1,854		32		2,891		2,018		24		3,085
Corporate debt securities	3		13		283		15		2		323
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		36		869		15		9		856

Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,865	$	92	$	4,385	$	2,060	$	36	$	4,642
Other Investments
Cash and cash equivalents	$	—	$	—	$	17	$	—	$	—	$	20

Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	43	$	2	$	—	$	46
Total Investments	$	1,866	$	92	$	4,428	$	2,062	$	36	$	4,688

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	68	$	—	$	—	$	107
Equity securities	1,854		32		2,891		2,018		24		3,085
Corporate debt securities	3		13		283		15		2		323
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		36		869		15		9		856

Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,865	$	92	$	4,385	$	2,060	$	36	$	4,642
Other Investments
Cash and cash equivalents	$	—	$	—	$	17	$	—	$	—	$	20

Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	43	$	2	$	—	$	46
Total Investments	$	1,866	$	92	$	4,428	$	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 three months ended March 31, 2022, and 2021, were as follows.


	Three Months Ended
(in millions)		March 31, 2022		March 31, 2021
FV-NI:
Realized gains		$	36	$	12
Realized losses		36		7
AFS:
Realized gains		1		4
Realized losses		6		3

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	58	$	—	$	—	$	94
Equity securities	1,757		32		2,782		1,915		23		2,970
Corporate debt securities	3		12		255		15		2		282
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		19		502		15		3		472
Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,768	$	74	$	3,871	$	1,957	$	29	$	4,089
Other Investments
Cash and cash equivalents	$	—	$	—	$	14	$	—	$	—	$	16
Total Other Investments	$	—	$	—	$	14	$	—	$	—	$	16
Total Investments	$	1,768	$	74	$	3,885	$	1,957	$	29	$	4,105

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	58	$	—	$	—	$	94
Equity securities	1,757		32		2,782		1,915		23		2,970
Corporate debt securities	3		12		255		15		2		282
Municipal bonds	2		11		269		12		1		266
U.S. government bonds	6		19		502		15		3		472
Other debt securities	—		—		5		—		—		5
Total NDTF Investments	$	1,768	$	74	$	3,871	$	1,957	$	29	$	4,089
Other Investments
Cash and cash equivalents	$	—	$	—	$	14	$	—	$	—	$	16
Total Other Investments	$	—	$	—	$	14	$	—	$	—	$	16
Total Investments	$	1,768	$	74	$	3,885	$	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 three months ended March 31, 2022, and 2021, were as follows.


	Three Months Ended
(in millions)		March 31, 2022		March 31, 2021
FV-NI:
Realized gains		$	36	$	12
Realized losses		35		7
AFS:
Realized gains		1		4
Realized losses		5		3

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	10	$	—	$	—	$	13
Equity securities	97		—		109		103		1		115
Corporate debt securities	—		1		28		—		—		41

U.S. government bonds	—		17		367		—		6		384


Total NDTF Investments(a)	$	97	$	18	$	514	$	103	$	7	$	553
Other Investments
Cash and cash equivalents	$	—	$	—	$	2	$	—	$	—	$	3

Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	28	$	2	$	—	$	29
Total Investments	$	98	$	18	$	542	$	105	$	7	$	582

(a)During the three months ended March 31, 2022, and the year ended December 31, 2021, 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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
NDTF
Cash and cash equivalents	$	—	$	—	$	10	$	—	$	—	$	13
Equity securities	97		—		109		103		1		115
Corporate debt securities	—		1		28		—		—		41

U.S. government bonds	—		17		367		—		6		384


Total NDTF Investments(a)	$	97	$	18	$	514	$	103	$	7	$	553
Other Investments
Cash and cash equivalents	$	—	$	—	$	2	$	—	$	—	$	3

Municipal bonds	1		—		26		2		—		26
Total Other Investments	$	1	$	—	$	28	$	2	$	—	$	29
Total Investments	$	98	$	18	$	542	$	105	$	7	$	582

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
Investments
Cash and cash equivalents	$	—	$	—	$	1	$	—	$	—	$	—
Equity securities	4		4		91		6		—		97
Corporate debt securities	—		—		8		—		—		6
Municipal bonds	—		2		49		1		1		46
U.S. government bonds	—		—		6		—		—		12

Total Investments	$	4	$	6	$	155	$	7	$	1	$	161

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, 2022						December 31, 2021
	Gross		Gross				Gross		Gross
	Unrealized		Unrealized		Estimated		Unrealized		Unrealized		Estimated
	Holding		Holding		Fair		Holding		Holding		Fair
(in millions)	Gains		Losses		Value		Gains		Losses		Value
Investments
Cash and cash equivalents	$	—	$	—	$	1	$	—	$	—	$	—
Equity securities	4		4		91		6		—		97
Corporate debt securities	—		—		8		—		—		6
Municipal bonds	—		2		49		1		1		46
U.S. government bonds	—		—		6		—		—		12

Total Investments	$	4	$	6	$	155	$	7	$	1	$	161