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Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Income (Numerator) [Abstract] |  |  |  |
Net income (loss) | $ 19 | $ 344 | $ (1,821) | $ 898
Net income (loss) available to PPL common shareowners - Basic | 19 | 344 | (1,821) | 898
Net income (loss) available to PPL common shareowners - Diluted | $ 19 | $ 344 | $ (1,821) | $ 898
Shares of Common Stock (Denominator) [Abstract] |  |  |  |
Weighted-average shares - Basic EPS (in shares) | 769,466 | 768,768 | 769,313 | 768,358
Add incremental non-participating securities: [Abstract] |  |  |  |
Share-based payment awards (in shares) | 0 | 640 | 0 | 715
Weighted-average shares - Diluted EPS (in shares) | 769,466 | 769,408 | 769,313 | 769,073
Shares Issued (Numeric) [Abstract] |  |  |  |
Common stock issued under stock-based compensation plans (in shares) | 137 | 9 | 657 | 607
Common stock issued under DRIP (in shares) | 0 | 509 | 0 | 943
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 | $ (536) | $ 153 | $ (333) | $ 357
Income (loss) from discontinued operations (net of income taxes) available to PPL common shareowners - Basic and Diluted | $ 555 | $ 191 | $ (1,488) | $ 541
Income (loss) from Discontinued Operations (net of income taxes) | $ 0.72 | $ 0.25 | $ (1.93) | $ 0.70
Income from Continuing Operations after income taxes | $ (0.69) | $ 0.20 | $ (0.44) | $ 0.47
Stock Options [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Shares excluded from the computations of diluted EPS | 3,443 | 1,170 | 1,838 | 710

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