Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income (Numerator) [Abstract]
Net income (loss)	$ 112	$ 119	$ 397	$ 392
Less amounts allocated to participating securities	0	0	1	0
Net income (loss) available to PPL common shareowners - Basic	112	119	396	392
Net income (loss) available to PPL common shareowners - Diluted	$ 112	$ 119	$ 396	$ 392
Shares of Common Stock (Denominator) [Abstract]
Weighted-average shares - Basic EPS (in shares)	737,075	735,977	736,953	735,741
Add incremental non-participating securities: [Abstract]
Share-based payment awards (in shares)	1,102	792	985	737
Weighted-average shares - Diluted EPS (in shares)	738,177	736,769	737,938	736,478
Income (Loss) from Continuing Operations after income taxes, Diluted	$ 0.15	$ 0.16	$ 0.54	$ 0.53
Income (Loss) from Continuing Operations After Income Taxes, Basic	0.15	0.16	0.54	0.53
Basic EPS - Available to PPL common shareowners: [Abstract]
Net Income Available to PPL common shareowners (in dollars per share)	0.15	0.16	0.54	0.53
Diluted EPS - Available to PPL common shareowners: [Abstract]
Net Income Available to PPL common shareowners (in dollars per share)	$ 0.15	$ 0.16	$ 0.54	$ 0.53
Shares Issued (Numeric) [Abstract]
Common stock issued under stock-based compensation plans (in shares)	0	0	0	124
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computations of diluted EPS	258	66	396	110