Cash amount of debt extinguished.

No definition available.

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Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

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Period Type:	duration

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

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Namespace Prefix:	us-gaap_
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Period Type:	duration

Financing Activities - Long-term Debt (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended	9 Months Ended
	Jul. 30, 2021	Jun. 30, 2021	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Jul. 31, 2021	Jul. 01, 2021	Jun. 24, 2021	May 31, 2021	Apr. 30, 2021	Dec. 31, 2020
Long-term Debt (Numeric) [Abstract]
Loss on extinguishment of debt				$ (395,000)	$ 0
PPL Electric [Member] \| First Mortgage Bond [Member] \| First Mortgage Bonds, Floating Rate Series due 2024
Long-term Debt (Numeric) [Abstract]
Principal amount								$ 650,000
Proceeds from Issuance of Debt		$ 647,000
PPL Electric [Member] \| First Mortgage Bond [Member] \| First Mortgage Bonds, 3% Series due 2021 \| Redemption [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount							$ 400,000
Stated interest rate							3.00%
PPL Capital Funding [Member]
Long-term Debt (Numeric) [Abstract]
Capacity				1,550,000
Borrowed				0							$ 400,000
PPL Capital Funding [Member] \| Term Loan Facility [Member]
Long-term Debt (Numeric) [Abstract]
Capacity				0
Borrowed				$ 0							$ 100,000
PPL Capital Funding [Member] \| Term Loan Facility [Member] \| Repayment
Long-term Debt (Numeric) [Abstract]
Principal amount										$ 100,000
PPL Capital Funding [Member] \| Senior Notes due 2023 \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		3.40%	3.40%			3.40%
PPL Capital Funding [Member] \| Senior Notes due 2024 \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		3.95%	3.95%			3.95%
PPL Capital Funding [Member] \| Senior Notes due 2043 \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		4.70%	4.70%
PPL Capital Funding [Member] \| Senior Notes due 2044 \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		5.00%	5.00%
PPL Capital Funding [Member] \| Senior Notes due 2047 \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		4.00%	4.00%
PPL Capital Funding [Member] \| Senior Notes Due 2030 [Member] \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		4.125%	4.125%
PPL Capital Funding [Member] \| Senior Notes due 2026 \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		3.10%	3.10%
PPL Capital Funding [Member] \| Junior Subordinated Notes due 2073 \| Repayment
Long-term Debt (Numeric) [Abstract]
Principal amount						$ 450,000
Stated interest rate						5.90%
Loss on extinguishment of debt	$ 15,000
PPL Capital Funding [Member] \| Senior Notes [Member] \| Repayment
Long-term Debt (Numeric) [Abstract]
Loss on extinguishment of debt	58,000		$ 322,000
Extinguishment of Debt, Amount	1,072,000	$ 1,962,000
Extinguishment of Debt, Aggregate Purchase Price	$ 1,133,000	$ 1,000,000
PPL Capital Funding [Member] \| Senior Notes due 2022 (4.20%) \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		4.20%	4.20%			4.20%
PPL Capital Funding [Member] \| Senior Notes due 2022 (3.50%) \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		3.50%	3.50%			3.50%
PPL Capital Funding [Member] \| Senior Notes 2 \| Repayment
Long-term Debt (Numeric) [Abstract]
Extinguishment of Debt, Aggregate Purchase Price		$ 2,293,000
PPL Capital Funding [Member] \| Senior Notes [Member]
Long-term Debt (Numeric) [Abstract]
Long-term Debt, Weighted Average Interest Rate, at Point in Time				4.14%		3.71%
LKE [Member] \| Senior Notes [Member] \| Senior Notes Due 2021 \| Bond Redemption [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount						$ 250,000
Stated interest rate						4.375%
LGE [Member] \| Trimble County Pollution Control Revenue Bonds, 2001 Series B \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount									$ 35,000
Stated interest rate									1.35%
LGE [Member] \| Jefferson County Pollution Control Revenue Bonds, 2001 Series B \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount									$ 35,000
Stated interest rate									1.35%
LGE [Member] \| Louisville/Jefferson County Metro Government of Kentucky Pollution Control Revenue Bonds, 2003 Series A \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount										$ 128,000
Stated interest rate										2.00%
LGE [Member] \| Jefferson County Environmental Facilities Revenue Refunding Bonds, 2001 Series B \| Conversion to Weekly Interest Rate [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		35,000	$ 35,000
LGE [Member] \| Jefferson County Environmental Facilities Revenue Refunding Bond, 2007 Series A \| Conversion to Weekly Interest Rate [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		31,000	31,000
LGE [Member] \| Trimble County Pollution Control Revenue Bonds, 2001 Series A \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 28,000
Stated interest rate				0.625%
KU [Member] \| Carroll County Environmental Facilities Revenue Refunding Bonds, 2006 Series B \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 54,000
Stated interest rate				2.125%
KU [Member] \| Carroll County Environmental Facilities Revenue Bonds, 2008 series A \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 78,000
Stated interest rate				2.00%
PPL Electric Utilities Corp [Member] \| First Mortgage Bond [Member] \| First Mortgage Bonds, Floating Rate Series due 2024
Long-term Debt (Numeric) [Abstract]
Principal amount								$ 650,000
Proceeds from Issuance of Debt		647,000
PPL Electric Utilities Corp [Member] \| First Mortgage Bond [Member] \| First Mortgage Bonds, 3% Series due 2021 \| Redemption [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount							$ 400,000
Stated interest rate							3.00%
Louisville Gas And Electric Co [Member] \| Trimble County Pollution Control Revenue Bonds, 2001 Series B \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount									$ 35,000
Stated interest rate									1.35%
Louisville Gas And Electric Co [Member] \| Jefferson County Pollution Control Revenue Bonds, 2001 Series B \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount									$ 35,000
Stated interest rate									1.35%
Louisville Gas And Electric Co [Member] \| Louisville/Jefferson County Metro Government of Kentucky Pollution Control Revenue Bonds, 2003 Series A \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount										$ 128,000
Stated interest rate										2.00%
Louisville Gas And Electric Co [Member] \| Jefferson County Environmental Facilities Revenue Refunding Bonds, 2001 Series B \| Conversion to Weekly Interest Rate [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		35,000	35,000
Louisville Gas And Electric Co [Member] \| Jefferson County Environmental Facilities Revenue Refunding Bond, 2007 Series A \| Conversion to Weekly Interest Rate [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		$ 31,000	$ 31,000
Louisville Gas And Electric Co [Member] \| Trimble County Pollution Control Revenue Bonds, 2001 Series A \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 28,000
Stated interest rate				0.625%
Kentucky Utilities Co [Member] \| Carroll County Environmental Facilities Revenue Refunding Bonds, 2006 Series B \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 54,000
KU [Member] \| Carroll County Environmental Facilities Revenue Bonds, 2008 series A \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 78,000
Stated interest rate				2.00%
KU [Member] \| Remarketed [Member] \| Carroll County Environmental Facilities Revenue Refunding Bonds, 2006 Series B
Long-term Debt (Numeric) [Abstract]
Stated interest rate				2.125%