SCHEDULE I - CONDENSED UNCONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Revenues [Abstract]
Operating Revenues	$ 1,954	$ 1,933	$ 1,803	$ 2,079	$ 1,939	$ 1,872	$ 1,848	$ 2,126	$ 7,769	$ 7,785	$ 7,447
Operating Expenses [Abstract]
Other operation and maintenance									1,985	1,983	1,802
Total Operating Expenses									4,929	4,933	4,546
Operating Loss	693	726	640	781	657	686	658	851	2,840	2,852	2,901
Other Income (Expense) - net [Abstract]
Other Income (Expense) - net									309	396	(88)
Interest Expense									994	963	901
Income Before Income Taxes									2,155	2,285	1,912
Income Taxes									409	458	784
Net income	$ 364	$ 475	$ 441	$ 466	$ 415	$ 445	$ 515	$ 452	1,746	1,827	1,128
Total other comprehensive income (loss)									(394)	(491)	356
Comprehensive Income Attributable to PPL Shareowners									$ 1,352	$ 1,336	$ 1,484
Net Income Available to PPL Corporation Common Shareowners: (in dollars per share)
Basic (in dollars per share)	$ 0.49	$ 0.66	$ 0.61	$ 0.65	$ 0.57	$ 0.63	$ 0.74	$ 0.65	$ 2.39	$ 2.59	$ 1.64
Diluted (in dollars per share)	$ 0.48	$ 0.65	$ 0.60	$ 0.64	$ 0.57	$ 0.62	$ 0.73	$ 0.65	$ 2.37	$ 2.58	$ 1.64
Weighted-Average Shares of Common Stock Outstanding (in thousands)
Basic									728,512	704,439	685,240
Diluted									736,754	708,619	687,334
LG&E and KU Energy LLC Unconsolidated [Member]
Other Income (Expense) - net [Abstract]
Equity in earnings of subsidiaries									$ 477	$ 470	$ 397
Interest Income from Affiliate									28	25	14
Other Income (Expense) - net									505	495	411
Interest Expense									30	29	30
Interest Expense with Affiliates									32	28	20
Income Before Income Taxes									443	438	361
Income Taxes									(25)	(7)	45
Net income									468	445	316
Total other comprehensive income (loss)									(4)	17	(18)
Comprehensive Income Attributable to PPL Shareowners									$ 464	$ 462	$ 298