Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income (Numerator) [Abstract]
Net income (loss)	$ 285	$ 273
Less amounts allocated to participating securities	1	0
Net income (loss) available to PPL common shareowners - Basic	284	273
Net income (loss) available to PPL common shareowners - Diluted	$ 284	$ 273
Shares of Common Stock (Denominator) [Abstract]
Weighted-average shares - Basic EPS (in shares)	736,829	735,503
Add incremental non-participating securities: [Abstract]
Share-based payment awards (in shares)	869	681
Weighted-average shares - Diluted EPS (in shares)	737,698	736,184
Income (Loss) from Continuing Operations after income taxes, Diluted	$ 0.39	$ 0.37
Income (Loss) from Continuing Operations After Income Taxes, Basic	0.39	0.37
Basic EPS - Available to PPL common shareowners: [Abstract]
Net Income Available to PPL common shareowners (in dollars per share)	0.39	0.37
Diluted EPS - Available to PPL common shareowners: [Abstract]
Net Income Available to PPL common shareowners (in dollars per share)	$ 0.39	$ 0.37
Shares Issued (Numeric) [Abstract]
Common stock issued under stock-based compensation plans (in shares)	0	124
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Income (loss) from discontinued operations (net of income taxes) available to PPL common shareowners - Basic and Diluted		$ 0
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computations of diluted EPS	534	154