Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income (Numerator) [Abstract]
Net income (loss)	$ 174	$ 207	$ 566	$ (1,614)
Net income (loss) available to PPL common shareowners - Basic	174	207	566	(1,614)
Net income (loss) available to PPL common shareowners - Diluted	$ 174	$ 207	$ 566	$ (1,614)
Shares of Common Stock (Denominator) [Abstract]
Weighted-average shares - Basic EPS (in shares)	736,247	767,733	735,912	768,781
Add incremental non-participating securities: [Abstract]
Share-based payment awards (in shares)	827	2,116	767	0
Weighted-average shares - Diluted EPS (in shares)	737,074	769,849	736,679	768,781
Income (Loss) from Continuing Operations after income taxes, Diluted	$ 0.24	$ 0.27	$ 0.77	$ (0.16)
Income (Loss) from Continuing Operations After Income Taxes, Basic	0.24	0.27	0.77	(0.16)
Loss from discontinued operations (net of income taxes), Diluted	0	0	0	(1.94)
Loss from Discontinued Operations (net of income taxes), Basic	0	0	0	(1.94)
Basic EPS - Available to PPL common shareowners: [Abstract]
Net Income Available to PPL common shareowners (in dollars per share)	0.24	0.27	0.77	(2.10)
Diluted EPS - Available to PPL common shareowners: [Abstract]
Net Income Available to PPL common shareowners (in dollars per share)	$ 0.24	$ 0.27	$ 0.77	$ (2.10)
Shares Issued (Numeric) [Abstract]
Common stock issued under stock-based compensation plans (in shares)	0	158	124	816
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Income from continuing operations after income taxes available to PPL common shareowners - Basic and Diluted	$ 174	$ 209	$ 566	$ (124)
Income (loss) from discontinued operations (net of income taxes) available to PPL common shareowners - Basic and Diluted	$ 0	$ (2)	$ 0	$ (1,490)
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computations of diluted EPS	17	135	79	2,339