SCHEDULE I - CONDENSED UNCONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Revenues [Abstract]
Operating Revenues	$ 7,607	$ 7,769	$ 7,785
Operating Expenses [Abstract]
Other operation and maintenance	1,944	1,985	1,983
Total Operating Expenses	4,804	4,929	4,933
Operating Loss	2,803	2,840	2,852
Other Income (Expense) - net [Abstract]
Other Income (Expense) - net	169	309	396
Interest Expense	1,001	994	963
Income Before Income Taxes	1,971	2,155	2,285
Income Taxes	502	409	458
Net income	1,469	1,746	1,827
Total other comprehensive income (loss)	138	(394)	(491)
Comprehensive Income Attributable to PPL Shareowners	$ 1,607	$ 1,352	$ 1,336
Net Income Available to PPL Corporation Common Shareowners: (in dollars per share)
Basic (in dollars per share)	$ 1.91	$ 2.39	$ 2.59
Diluted (in dollars per share)	$ 1.91	$ 2.37	$ 2.58
Weighted-Average Shares of Common Stock Outstanding (in thousands)
Basic	768,590	728,512	704,439
Diluted	769,384	736,754	708,619
LG&E and KU Energy LLC Unconsolidated [Member]
Other Income (Expense) - net [Abstract]
Equity in earnings of subsidiaries	$ 490	$ 477	$ 470
Interest Income from Affiliate	12	28	25
Other Income (Expense) - net	502	505	495
Interest Expense	23	30	29
Interest Expense with Affiliates	37	32	28
Income Before Income Taxes	442	443	438
Income Taxes	(8)	(25)	(7)
Net income	450	468	445
Total other comprehensive income (loss)	7	(4)	17
Comprehensive Income Attributable to PPL Shareowners	$ 457	$ 464	$ 462