Financing Activities - Credit Arrangements (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
PPL Capital Funding [Member]
Line of Credit Facility [Line Items]
Capacity	$ 1,450
Borrowed	0	$ 0
Letters of Credit and Commercial Paper Issued (d)	58	619
Unused Capacity	1,392
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 (d)	0	561
Unused Capacity	1,250
Line of Credit Facility, Borrowing Capacity Sublimit	1,000
PPL Capital Funding [Member] | Bilateral Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	100
Borrowed	0	0
Letters of Credit and Commercial Paper Issued (d)	58	58
Unused Capacity	42
PPL Capital Funding [Member] | Bilateral Credit Facility [Member] | Rhode Island Energy
Line of Credit Facility [Line Items]
Letters of Credit and Commercial Paper Issued (d)	45
PPL Capital Funding [Member] | Bilateral Credit Facility #2
Line of Credit Facility [Line Items]
Capacity	100
Borrowed	0	0
Letters of Credit and Commercial Paper Issued (d)	0	0
Unused Capacity	100
PPL Electric [Member]
Line of Credit Facility [Line Items]
Capacity	650
Borrowed	0	250
Letters of Credit and Commercial Paper Issued (d)	131	146
Unused Capacity	519
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 (d)	131	146
Unused Capacity	519
PPL Electric [Member] | Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Capacity	0
Borrowed	0	250
Letters of Credit and Commercial Paper Issued (d)	0	0
Unused Capacity	0
LGE [Member]
Line of Credit Facility [Line Items]
Capacity	500
Borrowed	0	300
Letters of Credit and Commercial Paper Issued (d)	21	180
Unused Capacity	479
LGE [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	500
Borrowed	0	0
Letters of Credit and Commercial Paper Issued (d)	21	180
Unused Capacity	479
LGE [Member] | Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Capacity	0
Borrowed	0	300
Letters of Credit and Commercial Paper Issued (d)	0	0
Unused Capacity	0
KU [Member]
Line of Credit Facility [Line Items]
Capacity	400
Borrowed	0	300
Letters of Credit and Commercial Paper Issued (d)	92	101
Unused Capacity	308
KU [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	400
Borrowed	0	0
Letters of Credit and Commercial Paper Issued (d)	92	101
Unused Capacity	308
KU [Member] | Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Capacity	0
Borrowed	0	300
Letters of Credit and Commercial Paper Issued (d)	0	0
Unused Capacity	0
Rhode Island Energy | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Borrowing Capacity Sublimit	250
PPL Electric Utilities Corp [Member]
Line of Credit Facility [Line Items]
Capacity	650
Borrowed	0	250
Letters of Credit and Commercial Paper Issued (d)	131	146
Unused Capacity	519
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 (d)	131	146
Unused Capacity	519
PPL Electric Utilities Corp [Member] | Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Capacity	0
Borrowed	0	250
Letters of Credit and Commercial Paper Issued (d)	0	0
Unused Capacity	0
Louisville Gas And Electric Co [Member]
Line of Credit Facility [Line Items]
Capacity	500
Borrowed	0	300
Letters of Credit and Commercial Paper Issued (d)	21	180
Unused Capacity	479
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 (d)	21	180
Unused Capacity	479
Louisville Gas And Electric Co [Member] | Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Capacity	0
Borrowed	0	300
Letters of Credit and Commercial Paper Issued (d)	0	0
Unused Capacity	0
Kentucky Utilities Co [Member]
Line of Credit Facility [Line Items]
Capacity	400
Borrowed	0	300
Letters of Credit and Commercial Paper Issued (d)	92	101
Unused Capacity	308
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 (d)	92	101
Unused Capacity	308
Kentucky Utilities Co [Member] | Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Capacity	0
Borrowed	0	300
Letters of Credit and Commercial Paper Issued (d)	0	$ 0
Unused Capacity	$ 0