Financing Activities (Distributions and Capital Contributions) (Details) (USD $)	1 Months Ended		3 Months Ended																12 Months Ended
	Feb. 28, 2014	Nov. 30, 2013	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Distributions and Capital Contributions [Line Items]
Quarterly common stock dividend declaration date	2014-02	2013-11
Dividend payable date of quarterly common stock dividend	Apr. 01, 2014	Jan. 02, 2014
Current quarterly common stock dividend (in dollars per share)		$ 0.3675	$ 0.3675	[1],[2]	$ 0.3675	[1],[2]	$ 0.3675	[1],[2]	$ 0.3675	[1],[2]	$ 0.360	[1],[2]	$ 0.360	[1],[2]	$ 0.360	[1],[2]	$ 0.360	[1],[2]	$ 1.47	$ 1.44	$ 1.40
Quarterly common stock dividend (in dollars per share)	$ 0.3725
Annualized current quarterly common stock dividend (in dollars per share)	$ 1.49	$ 1.47
Restricted net assets at end of period			$ 2,500,000,000																$ 2,500,000,000
Unrestricted assets at the end of period			2,500,000,000																2,500,000,000
Minimum adjusted equity to total capitalization in order to pay dividends																			30.00%
PPL Energy Supply LLC [Member]
Distributions and Capital Contributions [Line Items]
Dividends/distributions paid to parent/member																			408,000,000	787,000,000	316,000,000
Capital contributions received from parent/member																			1,577,000,000	563,000,000	461,000,000
PPL Electric Utilities Corp [Member]
Distributions and Capital Contributions [Line Items]
Dividends/distributions paid to parent/member																			127,000,000	95,000,000	92,000,000
Capital contributions received from parent/member																			205,000,000	150,000,000	100,000,000
LG And E And KU Energy LLC [Member]
Distributions and Capital Contributions [Line Items]
Dividends/distributions paid to parent/member																			254,000,000	155,000,000	533,000,000
Capital contributions received from parent/member																			243,000,000
Restricted net assets at end of period			2,500,000,000																2,500,000,000
Unrestricted assets at the end of period			2,500,000,000																2,500,000,000
Minimum adjusted equity to total capitalization in order to pay dividends																			30.00%
Louisville Gas And Electric Co [Member]
Distributions and Capital Contributions [Line Items]
Dividends/distributions paid to parent/member																			99,000,000	75,000,000	83,000,000
Capital contributions received from parent/member																			86,000,000
Restricted net assets at end of period			1,000,000,000																1,000,000,000
Unrestricted assets at the end of period			1,000,000,000																1,000,000,000
Minimum adjusted equity to total capitalization in order to pay dividends																			30.00%
Kentucky Utilities Co [Member]
Distributions and Capital Contributions [Line Items]
Dividends/distributions paid to parent/member																			124,000,000	100,000,000	124,000,000
Capital contributions received from parent/member																			157,000,000
Restricted net assets at end of period			1,500,000,000																1,500,000,000
Unrestricted assets at the end of period			$ 1,500,000,000																$ 1,500,000,000
Minimum adjusted equity to total capitalization in order to pay dividends																			30.00%

[1] Quarterly results can vary depending on, among other things, weather and the forward pricing of power. Accordingly, comparisons among quarters of a year may not be indicative of overall trends and changes in operations.

[2] PPL has paid quarterly cash dividends on its common stock in every year since 1946. Future dividends, declared at the discretion of the Board of Directors, will be dependent upon future earnings, cash flows, financial requirements and other factors.