Derivative Instruments and Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2023

Jun. 30, 2022

Derivative Instruments And Hedging Activities [Line Items]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following table presents the fair value and the location on the Balance Sheets of derivatives not designated as hedging instruments.

	June 30, 2023				December 31, 2022
	Assets		Liabilities		Assets		Liabilities
Current:
Price Risk Management Assets/Liabilities:
Interest rate swaps (a)	$	—	$	1	$	—	$	1
Gas contracts (a)	1		16		20		62
Total current	1		17		20		63
Noncurrent:
Price Risk Management Assets/Liabilities:
Interest rate swaps (a)	—		6		—		6
Gas contracts (a)	—		7		5		4
Total noncurrent	—		13		5		10
Total derivatives	$	1	$	30	$	25	$	73

(a)Current portion is included in "Other current assets" and "Other current liabilities" and noncurrent portion is included in "Other noncurrent assets" and "Other deferred credits and noncurrent liabilities" on the Balance Sheets. Excludes accrued interest, if applicable.

Derivative Instruments, Gain (Loss)

The following table presents the effect of cash flow hedge activity on the Statement of Income for the period ended June 30, 2023.

	Location and Amount of Gain (Loss) Recognized in Income on Hedging Relationships
	Three Months				Six Months
	Interest Expense		Other Income (Expense) - net		Interest Expense		Other Income (Expense) - net
Total income and expense line items presented in the income statement in which the effect of cash flow hedges are recorded	$	165	$	5	$	329	$	35
The effects of cash flow hedges:
Gain (Loss) on cash flow hedging relationships:
Interest rate swaps:
Amount of gain (loss) reclassified from AOCI to income	(1)		—		(2)		—

The following table presents the effect of cash flow hedge activity on the Statement of Income for the period ended June 30, 2022.

	Location and Amount of Gain (Loss) Recognized in Income on Hedging Relationships
	Three Months				Six Months
	Interest Expense		Other Income (Expense) - net		Interest Expense		Other Income (Expense) - net
Total income and expense line items presented in the income statement in which the effect of cash flow hedges are recorded	$	118	$	26	$	225	$	26
The effects of cash flow hedges:
Gain (Loss) on cash flow hedging relationships:
Interest rate swaps:
Amount of gain (loss) reclassified from AOCI to income	(1)		—		(2)		—

Derivative Positions Eligible for Offset with Related Cash Collateral

The table below summarizes the derivative positions presented in the balance sheets where a right of setoff exists under these arrangements and related cash collateral received or pledged.

	Assets								Liabilities
			Eligible for Offset								Eligible for Offset
	Gross		Derivative Instruments		Cash Collateral Received		Net		Gross		Derivative Instruments		Cash Collateral Pledged		Net
June 30, 2023
Derivatives
PPL	$	1	$	1	$	—	$	—	$	30	$	1	$	—	$	29
LG&E	—		—		—		—		7		—		—		7

	Assets								Liabilities
			Eligible for Offset								Eligible for Offset
	Gross		Derivative Instruments		Cash Collateral Received		Net		Gross		Derivative Instruments		Cash Collateral Pledged		Net
December 31, 2022
Derivatives
PPL	$	25	$	20	$	—	$	5	$	73	$	62	$	—	$	11
LG&E	—		—		—		—		7		—		—		7

Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location

The following tables present the pre-tax effect of derivative instruments recognized in income, OCI or regulatory assets and regulatory liabilities for the period ended June 30, 2023.

	Three Months		Six Months			Three Months		Six Months
Derivative Relationships	Derivative Gain (Loss) Recognized in OCI		Derivative Gain (Loss) Recognized in OCI		Location of Gain (Loss) Recognized in Income on Derivative	Gain (Loss) Reclassified from AOCI into Income		Gain (Loss) Reclassified from AOCI into Income
Cash Flow Hedges:
Interest rate swaps	$	—	$	—	Interest expense	$	(1)	$	(2)

Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivative	Three Months		Six Months
Gas contracts	Energy purchases	$	(4)	$	(6)
	Other income(expense) -net	(1)		—
	Total	$	(5)	$	(6)
Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized as Regulatory Liabilities/Assets	Three Months		Six Months
Interest rate swaps	Regulatory assets - noncurrent	$	2	$	1
Gas contracts	Regulatory assets - current	2		(26)
	Regulatory assets - noncurrent	—		7
	Total	$	4	$	(18)

The following tables present the pre-tax effect of derivative instruments recognized in income, OCI or regulatory assets and regulatory liabilities for the period ended June 30, 2022.

	Three Months		Six Months			Three Months		Six Months
Derivative Relationships	Derivative Gain (Loss) Recognized in OCI		Derivative Gain (Loss) Recognized in OCI		Location of Gain (Loss) Recognized in Income on Derivative	Gain (Loss) Reclassified from AOCI into Income		Gain (Loss) Reclassified from AOCI into Income
Cash Flow Hedges:
Interest rate swaps	$	—	$	—	Interest expense	$	(1)	$	(2)

Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized in Income on Derivative	Three Months		Six Months
Interest rate swaps	Interest expense	$	—	$	1
Gas contracts	Energy purchases	9		9
	Total	$	9	$	10
Derivatives Not Designated as Hedging Instruments	Location of Gain (Loss) Recognized as Regulatory Liabilities/Assets	Three Months		Six Months
Interest rate swaps	Regulatory assets - noncurrent	$	4	$	8

Louisville Gas And Electric Co [Member]

Derivative Instruments And Hedging Activities [Line Items]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following table presents the fair value and the location on the Balance Sheets of derivatives not designated as hedging instruments.

	June 30, 2023				December 31, 2022
	Assets		Liabilities		Assets		Liabilities
Current:
Price Risk Management Assets/Liabilities:
Interest rate swaps	$	—	$	1	$	—	$	1
Total current	—		1		—		1
Noncurrent:
Price Risk Management Assets/Liabilities:
Interest rate swaps	—		6		—		6
Total noncurrent	—		6		—		6
Total derivatives	$	—	$	7	$	—	$	7

Derivative Instruments, Gain (Loss)

The following tables present the pre-tax effect of derivatives not designated as cash flow hedges that are recognized in income or regulatory assets for the period ended June 30, 2023.

	Location of Gain (Loss) Recognized in
Derivative Instruments	Income on Derivatives	Three Months		Six Months
Interest rate swaps	Interest expense	$	—	$	—
	Location of Gain (Loss) Recognized in
Derivative Instruments	Regulatory Assets	Three Months		Six Months
Interest rate swaps	Regulatory assets - noncurrent	$	2	$	1

The following tables present the pre-tax effect of derivatives not designated as cash flow hedges that are recognized in income or regulatory assets for the period ended June 30, 2022. 

	Location of Gain (Loss) Recognized in
Derivative Instruments	Income on Derivatives	Three Months		Six Months
Interest rate swaps	Interest expense	$	—	$	1
	Location of Gain (Loss) Recognized in
Derivative Instruments	Regulatory Assets	Three Months		Six Months
Interest rate swaps	Regulatory assets - noncurrent	$	4	$	8

Derivative Positions Eligible for Offset with Related Cash Collateral

The table below summarizes the derivative positions presented in the balance sheets where a right of setoff exists under these arrangements and related cash collateral received or pledged.

	Assets								Liabilities
			Eligible for Offset								Eligible for Offset
	Gross		Derivative Instruments		Cash Collateral Received		Net		Gross		Derivative Instruments		Cash Collateral Pledged		Net
June 30, 2023
Derivatives
PPL	$	1	$	1	$	—	$	—	$	30	$	1	$	—	$	29
LG&E	—		—		—		—		7		—		—		7

	Assets								Liabilities
			Eligible for Offset								Eligible for Offset
	Gross		Derivative Instruments		Cash Collateral Received		Net		Gross		Derivative Instruments		Cash Collateral Pledged		Net
December 31, 2022
Derivatives
PPL	$	25	$	20	$	—	$	5	$	73	$	62	$	—	$	11
LG&E	—		—		—		—		7		—		—		7