Commitments and Contingencies (Environmental Matter and Other) (Details) $ in Millions	1 Months Ended
	Nov. 30, 2020 employees	Aug. 31, 2020 employees	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
PPL Electric [Member] | PPL Electric Additional Sites [Member]
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Environmental site accrual | $			$ 10
PPL Electric Utilities Corp [Member] | PPL Electric Additional Sites [Member]
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Environmental site accrual | $				$ 10
LG And E And KU Energy LLC [Member] | LGE [Member]
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Concentration Risk Number of Union Employees	640
LG And E And KU Energy LLC [Member] | KU [Member]
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Concentration Risk Number of Union Employees		48
Louisville Gas And Electric Co [Member]
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Concentration Risk Number of Union Employees	640
Kentucky Utilities Co [Member]
Environmental Matters - Superfund And Other Remediation (Numeric) [Abstract]
Concentration Risk Number of Union Employees		48