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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Revenues [Abstract]
Operating Revenues	$ 1,939	$ 1,872	$ 1,848	$ 2,126	$ 1,926	$ 1,845	$ 1,725	$ 1,951	$ 7,785	$ 7,447	$ 7,517
Operating Expenses [Abstract]
Other operation and maintenance									1,983	1,802	1,857
Total Operating Expenses									4,933	4,546	4,581
Operating Loss	657	686	658	851	749	736	658	758	2,852	2,901	2,936
Other Income (Expense) - net [Abstract]
Other Income (Expense) - net									396	(88)	502
Interest Expense									963	901	888
Income Before Income Taxes									2,285	1,912	2,550
Income Taxes									458	784	648
Net income	$ 415	$ 445	$ 515	$ 452	$ 78	$ 355	$ 292	$ 403	1,827	1,128	1,902
Total other comprehensive income (loss)									(491)	356	(1,050)
Comprehensive Income Attributable to PPL Shareowners									$ 1,336	$ 1,484	$ 852
Net Income Available to PPL Corporation Common Shareowners: (in dollars per share)
Basic (in dollars per share)	$ 0.57	$ 0.63	$ 0.74	$ 0.65	$ 0.11	$ 0.52	$ 0.43	$ 0.59	$ 2.59	$ 1.64	$ 2.80
Diluted (in dollars per share)	$ 0.57	$ 0.62	$ 0.73	$ 0.65	$ 0.11	$ 0.51	$ 0.43	$ 0.59	$ 2.58	$ 1.64	$ 2.79
Weighted-Average Shares of Common Stock Outstanding (in thousands)
Basic									704,439	685,240	677,592
Diluted									708,619	687,334	680,446
LG&E and KU Energy LLC Unconsolidated [Member]
Other Income (Expense) - net [Abstract]
Equity in earnings of subsidiaries									$ 470	$ 397	$ 452
Interest Income from Affiliate									25	14	9
Other Income (Expense) - net									495	411	461
Interest Expense									29	30	29
Interest Expense with Affiliates									28	20	18
Income Before Income Taxes									438	361	414
Income Taxes									(7)	45	(15)
Net income									445	316	429
Total other comprehensive income (loss)									17	(18)	(24)
Comprehensive Income Attributable to PPL Shareowners									$ 462	$ 298	$ 405