Preferred Securities (Details) - $ / shares	Dec. 31, 2015	Oct. 31, 2013
Preferred Stock [Member]
Preferred Securities [Line Items]
Shares authorized	10,000,000
PPL Electric Utilities Corp [Member] | Preferred Stock [Member]
Preferred Securities [Line Items]
Shares authorized	20,629,936
PPL Electric Utilities Corp [Member] | Preference Stock [Member]
Preferred Securities [Line Items]
Shares authorized		10,000,000
Louisville Gas And Electric Co [Member] | Preferred Stock [Member]
Preferred Securities [Line Items]
Shares authorized	1,720,000
Par value of stock	$ 25
Louisville Gas And Electric Co [Member] | Preferred Stock Without Par Value [Member]
Preferred Securities [Line Items]
Shares authorized	6,750,000
No par value of stock
Kentucky Utilities Co [Member] | Preferred Stock Without Par Value [Member]
Preferred Securities [Line Items]
Shares authorized	5,300,000
No par value of stock
Kentucky Utilities Co [Member] | Preference Stock Without Par Value [Member]
Preferred Securities [Line Items]
Shares authorized	2,000,000
No par value of stock