Date the debt instrument can be repurchased, in CCYY-MM-DD format and interest rates reset.

No definition available.

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from additional borrowings including premium and net of cash paid to third parties in connection with debt origination.

+ References

No definition available.

+ Details

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Namespace Prefix:	ppl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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=114775744&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

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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

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(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ 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=6877327&loc=d3e13212-122682

+ Details

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

- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585

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Financing Activities - Long-term Debt (Details) £ in Millions, $ in Millions	1 Months Ended						3 Months Ended
	Oct. 31, 2018 USD ($)	Oct. 31, 2018 GBP (£)	Jun. 30, 2018 USD ($)	May 31, 2018 USD ($)	May 31, 2018 GBP (£)	Mar. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2018 GBP (£)	May 31, 2018 GBP (£)	Mar. 31, 2018 GBP (£)
WPD PLC [Member] \| Senior Notes [Member] \| Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount \| £		£ 350
Stated interest rate		3.50%
Proceeds from debt, net of issuance costs \| £		£ 346
Maturity date	Dec. 31, 2026	Dec. 31, 2026
Proceeds from debt, including premium net of debt issuance costs	$ 456
WPD South Wales PLC [Member] \| Index Linked Senior Unsecured Notes [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount \| £										£ 30
Stated interest rate						0.01%	0.01%			0.01%
Proceeds from debt, net of issuance costs \| £								£ 31
Maturity date							Dec. 31, 2036	Dec. 31, 2036
Proceeds from debt, including premium net of debt issuance costs							$ 44
WPD West Midlands [Member] \| Index Linked Senior Unsecured Notes [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount \| £									£ 30
Stated interest rate				0.01%					0.01%
Proceeds from debt, net of issuance costs \| £					£ 31
Maturity date				Dec. 31, 2028	Dec. 31, 2028
Proceeds from debt, including premium net of debt issuance costs				$ 41
PPL Electric [Member] \| First Mortgage [Member] \| Mortgage Indenture 2001 [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 400
Stated interest rate			4.15%
Proceeds from debt, net of issuance costs			$ 394
Maturity date			Dec. 31, 2048
PPL Capital Funding [Member] \| Senior Notes [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 250
Stated interest rate			1.90%
LGE [Member] \| Senior Debt Obligations [Member] \| Pollution Control Revenue Bonds, 2001 Series A [Member] \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount						$ 28	$ 28
Stated interest rate						2.30%	2.30%			2.30%
Maturity date						Dec. 31, 2026
Repurchase date of debt instruments						Sep. 01, 2021
LGE [Member] \| Senior Debt Obligations [Member] \| Pollution Control Revenue Bonds, 2001 Series B [Member] \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 35
Stated interest rate				2.55%					2.55%
Maturity date				Dec. 31, 2027	Dec. 31, 2027
Repurchase date of debt instruments				May 03, 2021	May 03, 2021
LGE [Member] \| Senior Debt Obligations [Member] \| Jefferson County Pollution Control Revenue Bonds, 2001 Series B [Member] \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 35
Stated interest rate				2.55%					2.55%
Maturity date				Dec. 31, 2027	Dec. 31, 2027
Repurchase date of debt instruments				May 03, 2021	May 03, 2021
PPL Electric Utilities Corp [Member] \| First Mortgage [Member] \| Mortgage Indenture 2001 [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 400
Stated interest rate			4.15%
Proceeds from debt, net of issuance costs			$ 394
Maturity date			Dec. 31, 2048
LG And E And KU Energy LLC [Member] \| LGE [Member] \| Senior Debt Obligations [Member] \| Pollution Control Revenue Bonds, 2001 Series A [Member] \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount						$ 28	$ 28
Stated interest rate						2.30%	2.30%			2.30%
Maturity date						Dec. 31, 2026
Repurchase date of debt instruments						Sep. 01, 2021
LG And E And KU Energy LLC [Member] \| LGE [Member] \| Senior Debt Obligations [Member] \| Pollution Control Revenue Bonds, 2001 Series B [Member] \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 35
Stated interest rate				2.55%					2.55%
Maturity date				Dec. 31, 2027	Dec. 31, 2027
Repurchase date of debt instruments				May 03, 2021	May 03, 2021
LG And E And KU Energy LLC [Member] \| LGE [Member] \| Senior Debt Obligations [Member] \| Jefferson County Pollution Control Revenue Bonds, 2001 Series B [Member] \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 35
Stated interest rate				2.55%					2.55%
Maturity date				Dec. 31, 2027	Dec. 31, 2027
Repurchase date of debt instruments				May 03, 2021	May 03, 2021
LG And E And KU Energy LLC [Member] \| Affiliated Entity [Member] \| Note Payable [Member]
Long-term Debt (Numeric) [Abstract]
Stated interest rate				4.00%					4.00%
Maturity date				May 31, 2028	May 31, 2028
Notes Payable, Noncurrent				$ 250
Louisville Gas And Electric Co [Member] \| Senior Debt Obligations [Member] \| Pollution Control Revenue Bonds, 2001 Series A [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount						$ 28	$ 28
Stated interest rate						2.30%	2.30%			2.30%
Maturity date						Dec. 31, 2026
Repurchase date of debt instruments						Sep. 01, 2021
Louisville Gas And Electric Co [Member] \| Senior Debt Obligations [Member] \| Pollution Control Revenue Bonds, 2001 Series B [Member] \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 35
Stated interest rate				2.55%					2.55%
Maturity date				Dec. 31, 2027	Dec. 31, 2027
Repurchase date of debt instruments				May 03, 2021	May 03, 2021
Louisville Gas And Electric Co [Member] \| Senior Debt Obligations [Member] \| Jefferson County Pollution Control Revenue Bonds, 2001 Series B [Member] \| Remarketed [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 35
Stated interest rate				2.55%					2.55%
Maturity date				Dec. 31, 2027	Dec. 31, 2027
Repurchase date of debt instruments				May 03, 2021	May 03, 2021