Financing Activities - Credit Arrangements (Details) - USD ($) $ in Millions	Jul. 29, 2022	Jun. 30, 2022	Mar. 31, 2022	Feb. 28, 2022	Dec. 31, 2021
PPL Capital Funding [Member]
Line of Credit Facility [Line Items]
Capacity		$ 1,450
Borrowed		0			$ 0
Letters of Credit and Commercial Paper Issued		316			15
Unused Capacity		1,134
PPL Capital Funding [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity		1,250
Borrowed		0			0
Letters of Credit and Commercial Paper Issued		256			0
Unused Capacity		994
PPL Capital Funding [Member] | Bilateral Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity		100	$ 100	$ 50
Borrowed		0			0
Letters of Credit and Commercial Paper Issued		60			15
Unused Capacity		40
PPL Capital Funding [Member] | Bilateral Credit Facility [Member] | Rhode Island Energy
Line of Credit Facility [Line Items]
Letters of Credit and Commercial Paper Issued		45
PPL Capital Funding [Member] | Bilateral Credit Facility #2
Line of Credit Facility [Line Items]
Capacity		100	$ 100	$ 50
Borrowed		0			0
Letters of Credit and Commercial Paper Issued		0			0
Unused Capacity		100
PPL Electric [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity		650
Borrowed		0			0
Letters of Credit and Commercial Paper Issued		1			1
Unused Capacity		649
LGE [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity		500
Borrowed		0			0
Letters of Credit and Commercial Paper Issued		394			69
Unused Capacity		106
LGE [Member] | Term Loan Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Capacity	$ 300
Borrowed	$ 300
Interest rate on outstanding borrowing	3.23%
KU [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity		400
Borrowed		0			0
Letters of Credit and Commercial Paper Issued		338			0
Unused Capacity		62
KU [Member] | Term Loan Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Capacity	$ 300
Borrowed	$ 300
Interest rate on outstanding borrowing	3.23%
PPL Electric Utilities Corp [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity		650
Borrowed		0			0
Letters of Credit and Commercial Paper Issued		1			1
Unused Capacity		649
Louisville Gas And Electric Co [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity		500
Borrowed		0			0
Letters of Credit and Commercial Paper Issued		394			69
Unused Capacity		106
Louisville Gas And Electric Co [Member] | Term Loan Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Capacity	$ 300
Borrowed	$ 300
Interest rate on outstanding borrowing	3.23%
Kentucky Utilities Co [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity		400
Borrowed		0			0
Letters of Credit and Commercial Paper Issued		338			$ 0
Unused Capacity		$ 62
Kentucky Utilities Co [Member] | Term Loan Facility [Member] | Subsequent Event [Member]
Line of Credit Facility [Line Items]
Capacity	$ 300
Borrowed	$ 300
Interest rate on outstanding borrowing	3.23%