Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income (Numerator) [Abstract]
Net income (loss)	$ 273	$ (1,840)
Net income (loss) available to PPL common shareowners - Basic	273	(1,840)
Net income (loss) available to PPL common shareowners - Diluted	$ 273	$ (1,840)
Shares of Common Stock (Denominator) [Abstract]
Weighted-average shares - Basic EPS (in shares)	735,503	769,159
Add incremental non-participating securities: [Abstract]
Share-based payment awards (in shares)	681	1,551
Weighted-average shares - Diluted EPS (in shares)	736,184	770,710
Shares Issued (Numeric) [Abstract]
Common stock issued under stock-based compensation plans (in shares)	124	520
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	$ 273	$ 203
Income (loss) from discontinued operations (net of income taxes) available to PPL common shareowners - Basic and Diluted	$ 0	$ (2,043)
Loss from Discontinued Operations (net of income taxes)	$ 0	$ (2.65)
Income from Continuing Operations after income taxes	$ 0.37	$ 0.26
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computations of diluted EPS	154	233