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, 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
Quarterly Financial Information (Unaudited) [Line Items]
Operating revenues		$ 3,222	[1]	$ 2,403	[1]	$ 2,549	[1]	$ 4,112	[1]	$ 4,218	[1]	$ 3,120	[1]	$ 2,489	[1]	$ 2,910	[1]	$ 12,286		$ 12,737		$ 8,521
Operating income		822	[1]	664	[1]	572	[1]	1,051	[1]	934	[1]	767	[1]	595	[1]	805	[1]	3,109		3,101		1,866
Income from continuing operations after income taxes		360	[1]	355	[1]	277	[1]	545	[1]	458	[1]	449	[1]	201	[1]	402	[1]	1,537		1,510		976
Income (loss) from discontinued operations						(6)	[1]							(1)	[1]	3	[1]	(6)		2		(17)
Net income		360	[1]	355	[1]	271	[1]	545	[1]	458	[1]	449	[1]	200	[1]	405	[1]	1,531		1,512		959
Net income attributable to PPL shareowners		359	[1]	355	[1]	271	[1]	541	[1]	454	[1]	444	[1]	196	[1]	401	[1]	1,526		1,495		938
Income from continuing operations after income taxes available to PPL common shareowners: [Abstract]
Basic (in dollars per share)		$ 0.61	[1],[2]	$ 0.61	[1],[2]	$ 0.47	[1],[2]	$ 0.93	[1],[2]	$ 0.78	[1],[2]	$ 0.76	[1],[2]	$ 0.35	[1],[2]	$ 0.82	[1],[2]	$ 2.62		$ 2.70		$ 2.21
Diluted (in dollars per share)		$ 0.60	[1],[2]	$ 0.61	[1],[2]	$ 0.47	[1],[2]	$ 0.93	[1],[2]	$ 0.78	[1],[2]	$ 0.76	[1],[2]	$ 0.35	[1],[2]	$ 0.82	[1],[2]	$ 2.61		$ 2.70		$ 2.20
Dividends declared per share of common stock (in dollars per share)	$ 0.360	$ 0.360	[1],[3]	$ 0.360	[1],[3]	$ 0.360	[1],[3]	$ 0.360	[1],[3]	$ 0.350	[1],[3]	$ 0.350	[1],[3]	$ 0.350	[1],[3]	$ 0.350	[1],[3]	$ 1.44		$ 1.40		$ 1.40
Net income available to PPL common shareowners: [Abstract]
Basic (in dollars per share)		$ 0.61	[1],[2]	$ 0.61	[1],[2]	$ 0.46	[1],[2]	$ 0.93	[1],[2]	$ 0.78	[1],[2]	$ 0.76	[1],[2]	$ 0.35	[1],[2]	$ 0.82	[1],[2]	$ 2.61		$ 2.71		$ 2.17
Diluted (in dollars per share)		$ 0.60	[1],[2]	$ 0.61	[1],[2]	$ 0.46	[1],[2]	$ 0.93	[1],[2]	$ 0.78	[1],[2]	$ 0.76	[1],[2]	$ 0.35	[1],[2]	$ 0.82	[1],[2]	$ 2.60		$ 2.70		$ 2.17
Price per common share: [Abstract]
High (in dollars per share)		$ 30.18	[1]	$ 29.98	[1]	$ 28.44	[1]	$ 29.85	[1]	$ 30.27	[1]	$ 29.61	[1]	$ 28.38	[1]	$ 26.98	[1]
Low (in dollars per share)		$ 27.74	[1]	$ 27.72	[1]	$ 26.68	[1]	$ 27.29	[1]	$ 27.00	[1]	$ 25.00	[1]	$ 25.23	[1]	$ 24.10	[1]
PPL Electric Utilities Corp [Member]
Quarterly Financial Information (Unaudited) [Line Items]
Operating revenues		457	[4]	444	[4]	404	[4]	458	[4]	439	[4]	455	[4]	440	[4]	558	[4]	1,763		1,892		2,455
Operating income		81	[4]	71	[4]	63	[4]	79	[4]	94	[4]	69	[4]	82	[4]	103	[4]	294		348		284
Net income		37	[4]	33	[4]	29	[4]	37	[4]	61	[4]	32	[4]	40	[4]	56	[4]	136	[5]	189	[5]	135	[5]
Net income attributable to PPL shareowners		$ 37	[4]	$ 33	[4]	$ 29	[4]	$ 33	[4]	$ 57	[4]	$ 28	[4]	$ 36	[4]	$ 52	[4]

[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] 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.

[3] 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.

[4] 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.

[5] Net income approximates comprehensive income.