Preferred Securities (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended						1 Months Ended	12 Months Ended				1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Preferred Stock [Member]	Dec. 31, 2011 Preferred Stock [Member]	Dec. 31, 2013 Preferred Stock [Member]	Jun. 30, 2012 Preference Stock [Member]	Dec. 31, 2013 PPL Electric Utilities Corp [Member]	Dec. 31, 2012 PPL Electric Utilities Corp [Member]	Dec. 31, 2011 PPL Electric Utilities Corp [Member]	Dec. 31, 2013 PPL Electric Utilities Corp [Member] Preferred Stock [Member]	Jun. 30, 2012 PPL Electric Utilities Corp [Member] Preference Stock [Member]	Dec. 31, 2011 PPL Electric Utilities Corp [Member] Preference Stock [Member]	Oct. 31, 2013 PPL Electric Utilities Corp [Member] Preference Stock [Member]	Dec. 31, 2013 Louisville Gas And Electric Co [Member] Preferred Stock [Member]	Dec. 31, 2013 Louisville Gas And Electric Co [Member] Preferred Stock Without Par Value [Member]	Dec. 31, 2013 Kentucky Utilities Co [Member] Preferred Stock Without Par Value [Member]	Dec. 31, 2013 Kentucky Utilities Co [Member] Preference Stock Without Par Value [Member]
Preferred Securities [Line Items]
Dividend requirements on noncontrolling interests				$ 4	$ 16				$ 4	$ 16
Shares authorized						10,000,000					20,629,936			10,000,000	1,720,000	6,750,000	5,300,000	2,000,000
Percentage rate on stock													6.25%
Date stock redemeed							Jun. 30, 2012					Jun. 30, 2012
Number of shares of stock redeemed												2,500,000
Aggregate value of stock redeemed							250					250
Value of stock redeemed including accumulated dividends		$ 250							$ 250
Par value of stock												$ 100			$ 25
No par value of stock
Number of shares issued													2,500,000
Number of shares outstanding													2,500,000