Quarterly Financial Data (Unaudited) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Line Items]
Operating Revenues		$ 7,607	$ 7,769	$ 7,785
Operating income		$ 2,803	$ 2,840	$ 2,852
Net income (loss) available to PPL common shareowners: [Abstract]
Basic (in dollars per share)		$ 1.91	$ 2.39	$ 2.59
Diluted (in dollars per share)		1.91	2.37	2.58
Dividends declared per share of common stock (in dollars per share)	$ 0.4150	$ 1.66	$ 1.65	$ 1.64
PPL Electric Utilities Corp [Member]
Quarterly Financial Information Disclosure [Line Items]
Operating Revenues		$ 2,331	$ 2,358	$ 2,277
Operating income		$ 817	$ 745	$ 694