Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income (Numerator) [Abstract]
Net income (loss)	$ 119	$ 19	$ 392	$ (1,821)
Net income (loss) available to PPL common shareowners - Basic	119	19	392	(1,821)
Net income (loss) available to PPL common shareowners - Diluted	$ 119	$ 19	$ 392	$ (1,821)
Shares of Common Stock (Denominator) [Abstract]
Weighted-average shares - Basic EPS (in shares)	735,977	769,466	735,741	769,313
Add incremental non-participating securities: [Abstract]
Share-based payment awards (in shares)	792	0	737	0
Weighted-average shares - Diluted EPS (in shares)	736,769	769,466	736,478	769,313
Shares Issued (Numeric) [Abstract]
Common stock issued under stock-based compensation plans (in shares)	0	137	124	657
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	$ 119	$ (536)	$ 392	$ (333)
Income (loss) from discontinued operations (net of income taxes) available to PPL common shareowners - Basic and Diluted		$ 555	$ 0	$ (1,488)
Loss from Discontinued Operations (net of income taxes)	$ 0	$ 0.72	$ 0	$ (1.93)
Income from Continuing Operations after income taxes	$ 0.16	$ (0.69)	$ 0.53	$ (0.44)
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the computations of diluted EPS	66	3,443	110	1,838