Commitments and Contingencies - Environmental Matters and Other (Details) $ in Millions		1 Months Ended
	Nov. 04, 2020 vote	Aug. 31, 2020 employees	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
PPL Electric [Member] | PPL Electric Additional Sites [Member]
Environmental Matters - Superfund and Other Remediation (Numeric) [Abstract]
Accrual for Environmental Loss Contingencies | $			$ 10	$ 10
PPL Electric Utilities Corp [Member] | PPL Electric Additional Sites [Member]
Environmental Matters - Superfund and Other Remediation (Numeric) [Abstract]
Accrual for Environmental Loss Contingencies | $			$ 10	$ 10
LG And E And KU Energy LLC [Member] | LGE [Member]
Other - Labor Union Agreements (Numeric) [Abstract]
Collective Bargaining Agreement Term	3 years
Concentration Risk Number Of Union Employees | vote	640
LG And E And KU Energy LLC [Member] | KU [Member]
Other - Labor Union Agreements (Numeric) [Abstract]
Collective Bargaining Agreement Term		3 years
Concentration Risk Number Of Union Employees | employees		48
Louisville Gas And Electric Co [Member]
Other - Labor Union Agreements (Numeric) [Abstract]
Collective Bargaining Agreement Term	3 years
Concentration Risk Number Of Union Employees | vote	640
Kentucky Utilities Co [Member]
Other - Labor Union Agreements (Numeric) [Abstract]
Collective Bargaining Agreement Term		3 years
Concentration Risk Number Of Union Employees | employees		48