Financing Activities (Short-term Debt) (Details)			12 Months Ended									12 Months Ended		1 Months Ended		12 Months Ended
	Dec. 31, 2013 Commercial Paper [Member] USD ($)	Dec. 31, 2012 Commercial Paper [Member] USD ($)	Dec. 31, 2011 Bridge Loan 2011 [Member] Expired Short Term Debt Facility [Member] USD ($)	Mar. 31, 2011 Bridge Loan 2011 [Member] Expired Short Term Debt Facility [Member] GBP (£)	Dec. 31, 2013 PPL Energy Supply [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2012 PPL Energy Supply [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2013 PPL Electric [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2013 LGE [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2012 LGE [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2013 KU [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2012 KU [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2011 PPL Capital Funding [Member] Bridge Loan 2011 [Member] Expired Short Term Debt Facility [Member] USD ($)	Dec. 31, 2011 PPL Capital Funding [Member] Bridge Loan 2011 [Member] Expired Short Term Debt Facility [Member] GBP (£)	May 31, 2011 PPL WEM [Member] Bridge Loan 2011 [Member] Expired Short Term Debt Facility [Member] GBP (£)	Apr. 30, 2011 PPL WEM [Member] Bridge Loan 2011 [Member] Expired Short Term Debt Facility [Member] GBP (£)	Dec. 31, 2011 PPL WEM [Member] Bridge Loan 2011 [Member] Expired Short Term Debt Facility [Member] GBP (£)	Dec. 31, 2013 PPL Energy Supply LLC [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2012 PPL Energy Supply LLC [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2013 PPL Electric Utilities Corp [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2013 LG And E And KU Energy LLC [Member] LGE [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2012 LG And E And KU Energy LLC [Member] LGE [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2013 LG And E And KU Energy LLC [Member] KU [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2012 LG And E And KU Energy LLC [Member] KU [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2013 Louisville Gas And Electric Co [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2012 Louisville Gas And Electric Co [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2013 Kentucky Utilities Co [Member] Commercial Paper [Member] USD ($)	Dec. 31, 2012 Kentucky Utilities Co [Member] Commercial Paper [Member] USD ($)
Short-term Debt [Line Items]
Capacity	$ 1,750,000,000				$ 750,000,000		$ 300,000,000	$ 350,000,000		$ 350,000,000							$ 750,000,000		$ 300,000,000	$ 350,000,000		$ 350,000,000		$ 350,000,000		$ 350,000,000
Commercial paper issuances	190,000,000	481,000,000				356,000,000	20,000,000	20,000,000	55,000,000	150,000,000	70,000,000							356,000,000	20,000,000	20,000,000	55,000,000	150,000,000	70,000,000	20,000,000	55,000,000	150,000,000	70,000,000
Weighted-average interest rate						0.50%	0.23%	0.29%	0.42%	0.32%	0.42%							0.50%	0.23%	0.29%	0.42%	0.32%	0.42%	0.29%	0.42%	0.32%	0.42%
Unused capacity	1,560,000,000				750,000,000		280,000,000	330,000,000		200,000,000							750,000,000		280,000,000	330,000,000		200,000,000		330,000,000		200,000,000
Original committed capacity of Bridge Facility				3,600,000,000
Fees incurrred in connection with Bridge Facility			44,000,000
Borrowings during period on short-term facility													1,750,000,000			1,850,000,000
Interest rate on facility												2.62%	2.62%			2.62%
Repayments during period on short-term facility												$ 2,800,000,000		£ 1,200,000,000	£ 650,000,000