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Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2024

Qualified Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Components of Net Periodic Pension Costs

The following tables include the components of net periodic pension costs for qualified pension plans.

			Three Months Ended June 30, 2024
									Duke												Duke						Duke						Duke						Duke
			Duke						Energy						Progress						Energy						Energy						Energy						Energy
(in millions)			Energy						Carolinas						Energy						Progress						Florida						Ohio						Indiana						Piedmont
Service cost			$	29					$	10					$	8					$	5					$	4					$	—					$	1					$	1
Interest cost on projected benefit obligation			83						20						26						12						14						4						7						3
Expected return on plan assets			(154)						(40)						(54)						(25)						(29)						(7)						(11)						(5)
Amortization of actuarial loss			8						2						3						2						1						1						1						—
Amortization of prior service credit			(4)						—						—						—						—						—						(1)						(2)
Amortization of settlement charges			4						2						1						1						1						—						1						1
Net periodic pension costs			$	(34)					$	(6)					$	(16)					$	(5)					$	(9)					$	(2)					$	(2)					$	(2)

			Three Months Ended June 30, 2023
									Duke												Duke						Duke						Duke						Duke
			Duke						Energy						Progress						Energy						Energy						Energy						Energy
(in millions)			Energy						Carolinas						Energy						Progress						Florida						Ohio						Indiana						Piedmont
Service cost			$	29					$	9					$	7					$	5					$	4					$	—					$	2					$	1
Interest cost on projected benefit obligation			86						21						27						13						15						5						7						3
Expected return on plan assets			(147)						(40)						(49)						(23)						(26)						(6)						(10)						(5)
Amortization of actuarial loss			3						1						1						1						—						—						—						—
Amortization of prior service credit			(4)						—						—						—						—						—						(1)						(2)
Amortization of settlement charges			4						2						1						1						1						—						1						1
Net periodic pension costs			$	(29)					$	(7)					$	(13)					$	(3)					$	(6)					$	(1)					$	(1)					$	(2)

			Six Months Ended June 30, 2024
									Duke												Duke						Duke						Duke						Duke
			Duke						Energy						Progress						Energy						Energy						Energy						Energy
(in millions)			Energy						Carolinas						Energy						Progress						Florida						Ohio						Indiana						Piedmont
Service cost			$	57					$	19					$	16					$	10					$	7					$	1					$	3					$	2
Interest cost on projected benefit obligation			165						40						52						24						28						8						13						5
Expected return on plan assets			(308)						(81)						(108)						(50)						(58)						(13)						(21)						(10)
Amortization of actuarial loss			16						4						5						3						2						1						2						1
Amortization of prior service credit			(7)						—						—						—						—						—						(1)						(4)
Amortization of settlement charges			9						4						2						2						1						—						1						2
Net periodic pension costs			$	(68)					$	(14)					$	(33)					$	(11)					$	(20)					$	(3)					$	(3)					$	(4)

			Six Months Ended June 30, 2023
									Duke												Duke						Duke						Duke						Duke
			Duke						Energy						Progress						Energy						Energy						Energy						Energy
(in millions)			Energy						Carolinas						Energy						Progress						Florida						Ohio						Indiana						Piedmont
Service cost			$	59					$	19					$	16					$	10					$	7					$	1					$	3					$	2
Interest cost on projected benefit obligation			172						42						54						25						29						9						14						5
Expected return on plan assets			(294)						(80)						(99)						(46)						(52)						(12)						(20)						(10)
Amortization of actuarial loss			5						1						2						1						1						—						1						—
Amortization of prior service credit			(7)						—						—						—						—						—						(1)						(4)
Amortization of settlement charges			9						4						2						2						1						—						1						2
Net periodic pension costs			$	(56)					$	(14)					$	(25)					$	(8)					$	(14)					$	(2)					$	(2)					$	(5)

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 715
-SubTopic 20
-Subparagraph (h)
-Name Accounting Standards Codification
-Paragraph 1
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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