Financing Activities - Credit Arrangements (Details) - USD ($) $ in Millions	Sep. 30, 2025	Jan. 01, 2025	Dec. 31, 2024
Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	$ 596		$ 303
Capacity	3,950
PPL Capital Funding [Member]
Line of Credit Facility [Line Items]
Capacity	1,700
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	624		153
Unused Capacity	1,076
PPL Capital Funding [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	445		138
Capacity	1,600
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)	596		138
Unused Capacity	904
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)	445		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)	28		15
Unused Capacity	72
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)	1		1
Unused Capacity	749
PPL Electric [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	0		0
Capacity	750
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)	1		1
Unused Capacity	749
LGE [Member]
Line of Credit Facility [Line Items]
Capacity	600
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	0		25
Unused Capacity	600
LGE [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	0		25
Capacity	600
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)	0		25
Unused Capacity	600
KU [Member]
Line of Credit Facility [Line Items]
Capacity	600
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	0		140
Unused Capacity	600
KU [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	0		140
Capacity	600
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)	0		140
Unused Capacity	600
Rhode Island Energy | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	151		0
Capacity	400
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)	151		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)	1		1
Unused Capacity	749
PPL Electric Utilities Corp [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	0		0
Capacity	750
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)	1		1
Unused Capacity	749
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)	0		25
Unused Capacity	600
Louisville Gas And Electric Co [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	0		25
Capacity	600
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)	0		25
Unused Capacity	600
Kentucky Utilities Co [Member]
Line of Credit Facility [Line Items]
Capacity	600
Borrowed	0		0
Letters of Credit and Commercial Paper Issued (c)	0		140
Unused Capacity	600
Kentucky Utilities Co [Member] | Commercial Paper [Member]
Line of Credit Facility [Line Items]
Commercial Paper Issuances (c)	0		140
Capacity	600
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)	0		$ 140
Unused Capacity	$ 600