Cash amount of debt extinguished.

No definition available.

Name:	ppl_ExtinguishmentOfDebtAggregatePurchasePrice
Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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

- Definition

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

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

Name:	us-gaap_ExtinguishmentOfDebtAmount
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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
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

Name:	us-gaap_LongtermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num: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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

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

Financing Activities - Long-term Debt (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended	6 Months Ended
	Jul. 30, 2021	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2021	Jun. 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				$ (322)	$ 0
PPL Capital Funding [Member]
Long-term Debt (Numeric) [Abstract]
Capacity		$ 1,550	$ 1,550	1,550
Borrowed		0	0	0							$ 400
PPL Capital Funding [Member] \| Term Loan Facility [Member]
Long-term Debt (Numeric) [Abstract]
Capacity		0	0	0
Borrowed		$ 0	$ 0	$ 0							$ 100
PPL Capital Funding [Member] \| Term Loan Facility [Member] \| Repayment
Long-term Debt (Numeric) [Abstract]
Principal amount										$ 100
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 2023 \| Repayment \| Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Stated interest rate						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 2024 \| Repayment \| Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Stated interest rate						3.95%
PPL Capital Funding [Member] \| Senior Notes due 2043 \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		4.70%	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%	5.00%
PPL Capital Funding [Member] \| Senior Notes due 2047 \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		4.00%	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%	4.125%
PPL Capital Funding [Member] \| Senior Notes due 2026 \| Repayment
Long-term Debt (Numeric) [Abstract]
Stated interest rate		3.10%	3.10%	3.10%
PPL Capital Funding [Member] \| Junior Subordinated Notes due 2073 \| Repayment \| Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount						$ 450
Stated interest rate						5.90%
PPL Capital Funding [Member] \| Senior Notes [Member] \| Repayment
Long-term Debt (Numeric) [Abstract]
Loss on extinguishment of debt			$ 322
Extinguishment of Debt, Amount		$ 1,962
Extinguishment of Debt, Aggregate Purchase Price		$ 1,000
PPL Capital Funding [Member] \| Senior Notes [Member] \| Repayment \| Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Loss on extinguishment of debt	$ 58
Extinguishment of Debt, Amount	1,072
Extinguishment of Debt, Aggregate Purchase Price	$ 1,133
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 (4.20%) \| Repayment \| Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Stated interest rate						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 due 2022 (3.50%) \| Repayment \| Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Stated interest rate						3.50%
PPL Capital Funding [Member] \| Senior Notes 2 \| Repayment
Long-term Debt (Numeric) [Abstract]
Extinguishment of Debt, Aggregate Purchase Price		$ 2,293
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%	4.14%	4.14%
PPL Capital Funding [Member] \| Senior Notes [Member] \| Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Long-term Debt, Weighted Average Interest Rate, at Point in Time						3.71%
LKE [Member] \| Senior Notes [Member] \| Senior Notes Due 2021 \| Bond Redemption [Member] \| Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount						$ 250
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
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
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
Stated interest rate										2.00%
LGE [Member] \| Jefferson County Environmental Facilities Revenue Refunding Bonds, 2001 Series B \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		$ 35	$ 35	$ 35
LGE [Member] \| Jefferson County Environmental Facilities Revenue Refunding Bond, 2007 Series A \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		31	31	31
KU [Member] \| Carroll County Environmental Facilities Revenue Refunding Bonds, 2006 Series B \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		$ 54	$ 54	$ 54
Stated interest rate		2.125%	2.125%	2.125%
KU [Member] \| Carroll County Environmental Facilities Revenue Bonds, 2008 series A \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		$ 78	$ 78	$ 78
Stated interest rate		2.00%	2.00%	2.00%
PPL Electric Utilities Corp [Member] \| PPL Electric [Member] \| First Mortgage Bond [Member] \| First Mortgage Bonds, Floating Rate Series due 2024
Long-term Debt (Numeric) [Abstract]
Principal amount								$ 650
Proceeds from Issuance of Debt		$ 647
PPL Electric Utilities Corp [Member] \| PPL Electric [Member] \| First Mortgage Bond [Member] \| First Mortgage Bonds, 3% Series due 2021 \| Redemption [Member] \| Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount							$ 400
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
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
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
Stated interest rate										2.00%
Louisville Gas And Electric Co [Member] \| Jefferson County Environmental Facilities Revenue Refunding Bonds, 2001 Series B \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		35	$ 35	$ 35
Louisville Gas And Electric Co [Member] \| Jefferson County Environmental Facilities Revenue Refunding Bond, 2007 Series A \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		31	31	31
Kentucky Utilities Co [Member] \| Carroll County Environmental Facilities Revenue Refunding Bonds, 2006 Series B \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		54	54	54
KU [Member] \| Carroll County Environmental Facilities Revenue Bonds, 2008 series A \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount		$ 78	$ 78	$ 78
Stated interest rate		2.00%	2.00%	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%	2.125%	2.125%