Financing Activities (Distributions and Capital Contributions) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended		3 Months Ended																12 Months Ended
	Nov. 30, 2013	Feb. 28, 2013	Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2011		Sep. 30, 2011		Jun. 30, 2011		Mar. 31, 2011		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Distributions and Capital Contributions [Line Items]
Quarterly common stock dividend declaration date	2012-11	2013-02
Dividend payable date of quarterly common stock dividend	Jan. 02, 2013	Apr. 01, 2013
Current quarterly common stock dividend (in dollars per share)	$ 0.360		$ 0.360	[1],[2]	$ 0.360	[1],[2]	$ 0.360	[1],[2]	$ 0.360	[1],[2]	$ 0.350	[1],[2]	$ 0.350	[1],[2]	$ 0.350	[1],[2]	$ 0.350	[1],[2]	$ 1.44	$ 1.40	$ 1.40
Quarterly common stock dividend (in dollars per share)		$ 0.3675
Annualized current quarterly common stock dividend	$ 1.44	$ 1.47
Increase in retained earnings balance resticted for dividends			$ 2,300																$ 2,300
Increase in retained earnings balance available for dividends			2,300																2,300
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																			787	316	4,692
Capital contributions received from parent/member																			563	461	3,625
PPL Electric Utilities Corp [Member]
Distributions and Capital Contributions [Line Items]
Dividends/distributions paid to parent/member																			95	92	71
Capital contributions received from parent/member																			150	100	55
LG And E And KU Energy LLC [Member]
Distributions and Capital Contributions [Line Items]
Dividends/distributions paid to parent/member																			155
Increase in retained earnings balance resticted for dividends			2,300																2,300
Increase in retained earnings balance available for dividends			2,300																2,300
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																			(75)
Increase in retained earnings balance resticted for dividends			893																893
Increase in retained earnings balance available for dividends			917																917
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																			(100)
Increase in retained earnings balance resticted for dividends			1,400																1,400
Increase in retained earnings balance available for dividends			$ 1,400																$ 1,400
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.