Investments in Debt and Equity Securities (Tables)

6 Months Ended

Jun. 30, 2020

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.

	June 30, 2020						December 31, 2019
	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	$	—	$	—	$	731	$	—	$	—	$	101
Equity securities	3,034		92		5,039		3,523		55		5,661
Corporate debt securities	66		2		806		37		1		603
Municipal bonds	18		1		417		13		—		368
U.S. government bonds	62		—		813		33		1		1,256
Other debt securities	9		1		194		3		—		141
Total NDTF Investments	$	3,189	$	96	$	8,000	$	3,609	$	57	$	8,130
Other Investments
Cash and cash equivalents	$	—	$	—	$	113	$	—	$	—	$	52
Equity securities	51		—		116		57		—		122
Corporate debt securities	8		—		125		3		—		67
Municipal bonds	5		1		103		4		—		94
U.S. government bonds	3		—		40		2		—		41
Other debt securities	1		1		34		—		—		56
Total Other Investments	$	68	$	2	$	531	$	66	$	—	$	432
Total Investments	$	3,257	$	98	$	8,531	$	3,675	$	57	$	8,562

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.

	June 30, 2020						December 31, 2019
	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	$	—	$	—	$	731	$	—	$	—	$	101
Equity securities	3,034		92		5,039		3,523		55		5,661
Corporate debt securities	66		2		806		37		1		603
Municipal bonds	18		1		417		13		—		368
U.S. government bonds	62		—		813		33		1		1,256
Other debt securities	9		1		194		3		—		141
Total NDTF Investments	$	3,189	$	96	$	8,000	$	3,609	$	57	$	8,130
Other Investments
Cash and cash equivalents	$	—	$	—	$	113	$	—	$	—	$	52
Equity securities	51		—		116		57		—		122
Corporate debt securities	8		—		125		3		—		67
Municipal bonds	5		1		103		4		—		94
U.S. government bonds	3		—		40		2		—		41
Other debt securities	1		1		34		—		—		56
Total Other Investments	$	68	$	2	$	531	$	66	$	—	$	432
Total Investments	$	3,257	$	98	$	8,531	$	3,675	$	57	$	8,562

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 and six months ended June 30, 2020, and 2019, were as follows.

	Three Months Ended				Six Months Ended
(in millions)	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
FV-NI:
Realized gains	$	302	$	66	$	325	$	101
Realized losses	67		63		132		93
AFS:
Realized gains	27		47		47		57
Realized losses	13		36		19		47

Investments Classified by Contractual Maturity Date

The table below summarizes the maturity date for debt securities.

	June 30, 2020
			Duke				Duke		Duke		Duke
	Duke		Energy		Progress		Energy		Energy		Energy
(in millions)	Energy		Carolinas		Energy		Progress		Florida		Indiana
Due in one year or less	$	63	$	19	$	30	$	28	$	2	$	3
Due after one through five years	563		254		244		235		9		15
Due after five through 10 years	587		270		226		219		7		9
Due after 10 years	1,319		696		543		509		34		18
Total	$	2,532	$	1,239	$	1,043	$	991	$	52	$	45

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.

	June 30, 2020						December 31, 2019
	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	$	—	$	—	$	30	$	—	$	—	$	21
Equity securities	1,796		47		2,989		1,914		8		3,154
Corporate debt securities	41		2		519		21		1		361
Municipal bonds	6		—		133		3		—		96
U.S. government bonds	30		—		399		16		1		578
Other debt securities	7		1		188		3		—		137
Total NDTF Investments	$	1,880	$	50	$	4,258	$	1,957	$	10	$	4,347

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.

	June 30, 2020						December 31, 2019
	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	$	—	$	—	$	30	$	—	$	—	$	21
Equity securities	1,796		47		2,989		1,914		8		3,154
Corporate debt securities	41		2		519		21		1		361
Municipal bonds	6		—		133		3		—		96
U.S. government bonds	30		—		399		16		1		578
Other debt securities	7		1		188		3		—		137
Total NDTF Investments	$	1,880	$	50	$	4,258	$	1,957	$	10	$	4,347

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 and six months ended June 30, 2020, and 2019, were as follows.

	Three Months Ended				Six Months Ended
(in millions)	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
FV-NI:
Realized gains	$	27	$	44	$	36	$	67
Realized losses	25		48		70		69
AFS:
Realized gains	18		16		30		25
Realized losses	8		11		13		21

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.

	June 30, 2020						December 31, 2019
	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	$	—	$	—	$	701	$	—	$	—	$	80
Equity securities	1,238		45		2,050		1,609		47		2,507
Corporate debt securities	25		—		287		16		—		242
Municipal bonds	12		1		284		10		—		272
U.S. government bonds	32		—		414		17		—		678
Other debt securities	2		—		6		—		—		4
Total NDTF Investments	$	1,309	$	46	$	3,742	$	1,652	$	47	$	3,783
Other Investments
Cash and cash equivalents	$	—	$	—	$	108	$	—	$	—	$	49
Municipal bonds	4		—		52		3		—		51
Total Other Investments	$	4	$	—	$	160	$	3	$	—	$	100
Total Investments	$	1,313	$	46	$	3,902	$	1,655	$	47	$	3,883

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.

	June 30, 2020						December 31, 2019
	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	$	—	$	—	$	701	$	—	$	—	$	80
Equity securities	1,238		45		2,050		1,609		47		2,507
Corporate debt securities	25		—		287		16		—		242
Municipal bonds	12		1		284		10		—		272
U.S. government bonds	32		—		414		17		—		678
Other debt securities	2		—		6		—		—		4
Total NDTF Investments	$	1,309	$	46	$	3,742	$	1,652	$	47	$	3,783
Other Investments
Cash and cash equivalents	$	—	$	—	$	108	$	—	$	—	$	49
Municipal bonds	4		—		52		3		—		51
Total Other Investments	$	4	$	—	$	160	$	3	$	—	$	100
Total Investments	$	1,313	$	46	$	3,902	$	1,655	$	47	$	3,883

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 and six months ended June 30, 2020, and 2019, were as follows.

	Three Months Ended				Six Months Ended
(in millions)	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
FV-NI:
Realized gains	$	275	$	22	$	289	$	34
Realized losses	42		15		62		24
AFS:
Realized gains	6		30		11		31
Realized losses	4		25		5		26

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.

	June 30, 2020						December 31, 2019
	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	$	—	$	—	$	63	$	—	$	—	$	53
Equity securities	1,176		45		1,977		1,258		21		2,077
Corporate debt securities	25		—		287		16		—		242
Municipal bonds	12		1		284		10		—		272
U.S. government bonds	32		—		414		16		—		403
Other debt securities	2		—		6		—		—		4
Total NDTF Investments	$	1,247	$	46	$	3,031	$	1,300	$	21	$	3,051
Other Investments
Cash and cash equivalents	$	—	$	—	$	1	$	—	$	—	$	2
Total Other Investments	$	—	$	—	$	1	$	—	$	—	$	2
Total Investments	$	1,247	$	46	$	3,032	$	1,300	$	21	$	3,053

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.

	June 30, 2020						December 31, 2019
	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	$	—	$	—	$	63	$	—	$	—	$	53
Equity securities	1,176		45		1,977		1,258		21		2,077
Corporate debt securities	25		—		287		16		—		242
Municipal bonds	12		1		284		10		—		272
U.S. government bonds	32		—		414		16		—		403
Other debt securities	2		—		6		—		—		4
Total NDTF Investments	$	1,247	$	46	$	3,031	$	1,300	$	21	$	3,051
Other Investments
Cash and cash equivalents	$	—	$	—	$	1	$	—	$	—	$	2
Total Other Investments	$	—	$	—	$	1	$	—	$	—	$	2
Total Investments	$	1,247	$	46	$	3,032	$	1,300	$	21	$	3,053

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 and six months ended June 30, 2020, and 2019, were as follows.

	Three Months Ended				Six Months Ended
(in millions)	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
FV-NI:
Realized gains	$	26	$	7	$	40	$	17
Realized losses	27		7		47		15
AFS:
Realized gains	6		1		11		2
Realized losses	4		1		5		2

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.

	June 30, 2020						December 31, 2019
	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	$	—	$	—	$	638	$	—	$	—	$	27
Equity securities	62		—		73		351		26		430
U.S. government bonds	—		—		—		1		—		275
Total NDTF Investments(a)	$	62	$	—	$	711	$	352	$	26	$	732
Other Investments
Cash and cash equivalents	$	—	$	—	$	2	$	—	$	—	$	4
Municipal bonds	4		—		52		3		—		51
Total Other Investments	$	4	$	—	$	54	$	3	$	—	$	55
Total Investments	$	66	$	—	$	765	$	355	$	26	$	787

(a)

During the six months ended June 30, 2020, Duke Energy Florida continued to receive 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.

	June 30, 2020						December 31, 2019
	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	$	—	$	—	$	638	$	—	$	—	$	27
Equity securities	62		—		73		351		26		430
U.S. government bonds	—		—		—		1		—		275
Total NDTF Investments(a)	$	62	$	—	$	711	$	352	$	26	$	732
Other Investments
Cash and cash equivalents	$	—	$	—	$	2	$	—	$	—	$	4
Municipal bonds	4		—		52		3		—		51
Total Other Investments	$	4	$	—	$	54	$	3	$	—	$	55
Total Investments	$	66	$	—	$	765	$	355	$	26	$	787

(a)

During the six months ended June 30, 2020, Duke Energy Florida continued to receive reimbursements from the NDTF for costs related to ongoing decommissioning activity of 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 three and six months ended June 30, 2020, and 2019, were as follows.

	Three Months Ended				Six Months Ended
(in millions)	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
FV-NI:
Realized gains	$	249	$	15	$	249	$	17
Realized losses	15		8		15		9
AFS:
Realized gains	—		29		—		29
Realized losses	—		24		—		24

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.

	June 30, 2020						December 31, 2019
	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
Equity securities	$	39	$	—	$	77	$	43	$	—	$	81
Corporate debt securities	—		—		3		—		—		6
Municipal bonds	1		1		39		1		—		36
U.S. government bonds	—		—		3		—		—		2
Total Investments	$	40	$	1	$	122	$	44	$	—	$	125

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.

	June 30, 2020						December 31, 2019
	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
Equity securities	$	39	$	—	$	77	$	43	$	—	$	81
Corporate debt securities	—		—		3		—		—		6
Municipal bonds	1		1		39		1		—		36
U.S. government bonds	—		—		3		—		—		2
Total Investments	$	40	$	1	$	122	$	44	$	—	$	125