Quarterly Financial Data (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended																12 Months Ended
	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
Quarterly Financial Information (Unaudited) [Line Items]
Operating revenues		$ 2,848	[1]	$ 3,105	[1]	$ 3,450	[1]	$ 2,457	[1]	$ 3,222	[1]	$ 2,403	[1]	$ 2,549	[1]	$ 4,112	[1]	$ 11,860		$ 12,286		$ 12,737
Operating income		31	[1],[2]	857	[1]	758	[1]	693	[1]	822	[1]	664	[1]	572	[1]	1,051	[1]	2,339		3,109		3,101
Income from continuing operations after income taxes		(98)	[1],[2]	410	[1]	404	[1]	413	[1]	360	[1]	355	[1]	277	[1]	545	[1]	1,129		1,537		1,510
Income (loss) from discontinued operations				1	[1]	1	[1]							(6)	[1]			2		(6)		2
Net income		(98)	[1],[2]	411	[1]	405	[1]	413	[1]	360	[1]	355	[1]	271	[1]	545	[1]	1,131		1,531		1,512
Net income attributable to PPL shareowners		(98)	[1],[2]	410	[1]	405	[1]	413	[1]	359	[1]	355	[1]	271	[1]	541	[1]	1,130		1,526		1,495
Income from continuing operations after income taxes available to PPL common shareowners: [Abstract]
Basic (in dollars per share)		$ (0.16)	[1],[2],[3]	$ 0.65	[1],[3]	$ 0.68	[1],[3]	$ 0.70	[1],[3]	$ 0.61	[1],[3]	$ 0.61	[1],[3]	$ 0.47	[1],[3]	$ 0.93	[1],[3]	$ 1.85		$ 2.62		$ 2.70
Diluted (in dollars per share)		$ (0.16)	[1],[2],[3],[4]	$ 0.62	[1],[3],[4]	$ 0.63	[1],[3],[4]	$ 0.65	[1],[3],[4]	$ 0.60	[1],[3]	$ 0.61	[1],[3]	$ 0.47	[1],[3]	$ 0.93	[1],[3]	$ 1.76		$ 2.61		$ 2.70
Dividends declared per share of common stock (in dollars per share)	$ 0.3675	$ 0.3675	[1],[5]	$ 0.3675	[1],[5]	$ 0.3675	[1],[5]	$ 0.3675	[1],[5]	$ 0.360	[1],[5]	$ 0.360	[1],[5]	$ 0.360	[1],[5]	$ 0.360	[1],[5]	$ 1.47		$ 1.44		$ 1.40
Net income available to PPL common shareowners: [Abstract]
Basic (in dollars per share)		$ (0.16)	[1],[2],[3]	$ 0.65	[1],[3]	$ 0.68	[1],[3]	$ 0.70	[1],[3]	$ 0.61	[1],[3]	$ 0.61	[1],[3]	$ 0.46	[1],[3]	$ 0.93	[1],[3]	$ 1.85		$ 2.61		$ 2.71
Diluted (in dollars per share)		$ (0.16)	[1],[2],[3],[4]	$ 0.62	[1],[3],[4]	$ 0.63	[1],[3],[4]	$ 0.65	[1],[3],[4]	$ 0.60	[1],[3]	$ 0.61	[1],[3]	$ 0.46	[1],[3]	$ 0.93	[1],[3]	$ 1.76		$ 2.60		$ 2.70
Price per common share: [Abstract]
High (in dollars per share)		$ 31.79	[1]	$ 32.09	[1]	$ 33.55	[1]	$ 31.35	[1]	$ 30.18	[1]	$ 29.98	[1]	$ 28.44	[1]	$ 29.85	[1]
Low (in dollars per share)		$ 28.95	[1]	$ 29.03	[1]	$ 28.44	[1]	$ 28.64	[1]	$ 27.74	[1]	$ 27.72	[1]	$ 26.68	[1]	$ 27.29	[1]
PPL Electric Utilities Corp [Member]
Quarterly Financial Information (Unaudited) [Line Items]
Operating revenues		479	[6]	464	[6]	414	[6]	513	[6]	457	[6]	444	[6]	404	[6]	458	[6]	1,870		1,763		1,892
Operating income		101	[6]	105	[6]	92	[6]	121	[6]	81	[6]	71	[6]	63	[6]	79	[6]	419		294		348
Net income		49	[6]	51	[6]	45	[6]	64	[6]	37	[6]	33	[6]	29	[6]	37	[6]	209	[7]	136	[7]	189	[7]
Net income available to PPL		$ 49	[6]	$ 51	[6]	$ 45	[6]	$ 64	[6]	$ 37	[6]	$ 33	[6]	$ 29	[6]	$ 33	[6]	$ 209		$ 132		$ 173

[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] Fourth quarter of 2013 includes a charge for the termination of the lease of the Colstrip coal-fired electric generating facility in Montana. See Note 8 to the Financial Statements for additional information.

[3] The sum of the quarterly amounts may not equal annual earnings per share due to changes in the number of common shares outstanding during the year or rounding.

[4] As a result of a reported loss, diluted earnings per share for the three months ended December 31, 2013 exclude incremental shares as they were anti-dilutive.

[5] 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.

[6] PPL Electric's business is seasonal in nature, with peak sales periods generally occurring in the winter and summer months. Accordingly, comparisons among quarters of a year may not be indicative of overall trends and changes in operations.

[7] Net income approximates comprehensive income.