Financing Activities (Distributions and Capital Contributions) (Details) - USD ($) $ / shares in Units, $ in Billions		1 Months Ended	3 Months Ended																12 Months Ended
	Feb. 04, 2016	Nov. 30, 2015	Dec. 31, 2015		Sep. 30, 2015	[1],[2]	Jun. 30, 2015	[1],[2]	Mar. 31, 2015	[1],[2]	Dec. 31, 2014	[1],[2]	Sep. 30, 2014	[1],[2]	Jun. 30, 2014	[1],[2]	Mar. 31, 2014	[1],[2]	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Distributions [Line Items]
Quarterly common stock dividend declaration date		2015-11
Dividend payable date of quarterly common stock dividend		Jan. 04, 2016
Current quarterly common stock dividend (in dollars per share)		$ 0.3775	$ 0.3775	[1],[2]	$ 0.3775		$ 0.3725		$ 0.3725		$ 0.3725		$ 0.3725		$ 0.3725		$ 0.3725		$ 1.5	$ 1.49	$ 1.47
Annualized current quarterly common stock dividend (in dollars per share)		$ 1.51
Restricted net assets at end of period			$ 2.7																$ 2.7
Unrestricted assets at the end of period			2.9																$ 2.9
Minimum adjusted equity to total capitalization in order to pay dividends																			30.00%
Subsequent Event [Member]
Distributions [Line Items]
Quarterly common stock dividend declaration date	2016-02
Quarterly common stock dividend (in dollars per share)	$ 0.38
Annualized current quarterly common stock dividend (in dollars per share)	$ 1.52
LG And E And KU Energy LLC [Member]
Distributions [Line Items]
Restricted net assets at end of period			2.7																$ 2.7
Unrestricted assets at the end of period			2.9																$ 2.9
Minimum adjusted equity to total capitalization in order to pay dividends																			30.00%
Louisville Gas And Electric Co [Member]
Distributions [Line Items]
Restricted net assets at end of period			1.1																$ 1.1
Unrestricted assets at the end of period			1.2																$ 1.2
Minimum adjusted equity to total capitalization in order to pay dividends																			30.00%
Kentucky Utilities Co [Member]
Distributions [Line Items]
Restricted net assets at end of period			1.6																$ 1.6
Unrestricted assets at the end of period			$ 1.7																$ 1.7
Minimum adjusted equity to total capitalization in order to pay dividends																			30.00%

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

[2] Quarterly results can vary depending on, among other things, weather . Accordingly, comparisons among quarters of a year may not be indicative of overall tr ends and changes in operations.