Financing Activities - Credit Arrangements (Details) - USD ($) $ in Millions	Mar. 31, 2025	Jan. 01, 2025	Dec. 31, 2024
Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	$ 780		$ 303
PPL Capital Funding [Member]
Line of Credit Facility [Line Items]
Capacity	1,700
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	482		153
Unused Capacity	1,218
PPL Capital Funding [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	427		138
PPL Capital Funding [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	1,500	$ 1,500	1,250
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	427		138
Unused Capacity	1,073
Line of Credit Facility, Borrowing Capacity Sublimit	1,250		1,000
PPL Capital Funding [Member] | Syndicated Credit Facility [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	427		138
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 (c)	55		15
Unused Capacity	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 (c)	0		0
Unused Capacity	100
PPL Electric [Member]
Line of Credit Facility [Line Items]
Capacity	750
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	56		1
Unused Capacity	694
PPL Electric [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	55		0
PPL Electric [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	750	750	650
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	56		1
Unused Capacity	694
LGE [Member]
Line of Credit Facility [Line Items]
Capacity	600
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	89		25
Unused Capacity	511
LGE [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	89		25
LGE [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	600	600	500
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	89		25
Unused Capacity	511
KU [Member]
Line of Credit Facility [Line Items]
Capacity	600
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	209		140
Unused Capacity	391
KU [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	209		140
KU [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	600	600	400
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	209		140
Unused Capacity	391
Rhode Island Energy | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	0		0
Rhode Island Energy | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Borrowing Capacity Sublimit	250		250
Line of Credit Facility, Borrowing Capacity Sublimit, Maximum	600
Rhode Island Energy | Syndicated Credit Facility [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	0		0
PPL Electric Utilities Corp [Member]
Line of Credit Facility [Line Items]
Capacity	750
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	56		1
Unused Capacity	694
PPL Electric Utilities Corp [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	55		0
PPL Electric Utilities Corp [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	750	750	650
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	56		1
Unused Capacity	694
Louisville Gas And Electric Co [Member]
Line of Credit Facility [Line Items]
Capacity	600
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	89		25
Unused Capacity	511
Louisville Gas And Electric Co [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	89		25
Louisville Gas And Electric Co [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	600	600	500
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	89		25
Unused Capacity	511
Kentucky Utilities Co [Member]
Line of Credit Facility [Line Items]
Capacity	600
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	209		140
Unused Capacity	391
Kentucky Utilities Co [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	209		140
Kentucky Utilities Co [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	600	$ 600	400
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	209		$ 140
Unused Capacity	$ 391