Financing Activities - Credit Arrangements (Details) - USD ($) $ in Millions	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	362		15
Unused Capacity	1,088
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	347		0
Unused Capacity	903
PPL Capital Funding [Member] | Bilateral Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	100	$ 50
Borrowed	0		0
Letters of Credit and Commercial Paper Issued	15		15
Unused Capacity	85
PPL Capital Funding [Member] | Bilateral Credit Facility #2
Line of Credit Facility [Line Items]
Capacity	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	353		69
Unused Capacity	147
KU [Member] | Syndicated Credit Facility [Member]
Line of Credit Facility [Line Items]
Capacity	400
Borrowed	0		0
Letters of Credit and Commercial Paper Issued	285		0
Unused Capacity	115
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	353		69
Unused Capacity	147
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	285		$ 0
Unused Capacity	$ 115