Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income (Numerator) [Abstract]
Net income (loss)	$ 230	$ 174	$ 627	$ 566
Less amounts allocated to participating securities	0	0	1	0
Net income (loss) available to PPL common shareowners - Basic	230	174	626	566
Net income (loss) available to PPL common shareowners - Diluted	$ 230	$ 174	$ 626	$ 566
Shares of Common Stock (Denominator) [Abstract]
Weighted-average shares - Basic EPS (in shares)	737,107	736,247	737,005	735,912
Add incremental non-participating securities: [Abstract]
Share-based payment awards (in shares)	1,077	827	1,016	767
Weighted-average shares - Diluted EPS (in shares)	738,184	737,074	738,021	736,679
Income (Loss) from Continuing Operations after income taxes, Diluted	$ 0.31	$ 0.24	$ 0.85	$ 0.77
Income (Loss) from Continuing Operations After Income Taxes, Basic	0.31	0.24	0.85	0.77
Basic EPS - Available to PPL common shareowners: [Abstract]
Net Income Available to PPL common shareowners (in dollars per share)	0.31	0.24	0.85	0.77
Diluted EPS - Available to PPL common shareowners: [Abstract]
Net Income Available to PPL common shareowners (in dollars per share)	$ 0.31	$ 0.24	$ 0.85	$ 0.77
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	179	17	324	79