Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||||||||||
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Dec. 31, 2016 |
[1] | Sep. 30, 2016 |
[1] | Jun. 30, 2016 |
[1] | Mar. 31, 2016 |
[1] | Dec. 31, 2015 |
[1] | Sep. 30, 2015 |
[1] | Jun. 30, 2015 |
[1] | Mar. 31, 2015 |
[1] | Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
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Income (Numerator) | |||||||||||||||||||||||||||||||||||||
Income from continuing operations after income taxes | $ 405 | $ 396 | $ 250 | $ 552 | $ 1,902 | $ 1,603 | $ 1,437 | ||||||||||||||||||||||||||||||
Less amounts allocated to participating securities | 6 | 6 | 7 | ||||||||||||||||||||||||||||||||||
Income from continuing operations after income taxes available to PPL common shareowners - Basic | 1,896 | 1,597 | 1,430 | ||||||||||||||||||||||||||||||||||
Plus interest charges (net of tax) related to Equity Units | 0 | 0 | 9 | [2] | |||||||||||||||||||||||||||||||||
Income from continuing operations after income taxes available to PPL common shareowners - Diluted | 1,896 | 1,597 | 1,439 | ||||||||||||||||||||||||||||||||||
Income (loss) from discontinued operations (net of income taxes) available to PPL common shareowners - Basic and Diluted | (6) | [3],[4] | (3) | [3],[4] | (1,007) | [3],[4] | 95 | [3],[4] | 0 | (921) | 300 | ||||||||||||||||||||||||||
Net income | $ 465 | $ 473 | $ 483 | $ 481 | $ 399 | $ 393 | $ (757) | [5] | $ 647 | 1,902 | 682 | 1,737 | |||||||||||||||||||||||||
Less amounts allocated to participating securities | 6 | 2 | 9 | ||||||||||||||||||||||||||||||||||
Net income available to PPL common shareowners - Basic | 1,896 | 680 | 1,728 | ||||||||||||||||||||||||||||||||||
Plus interest charges (net of tax) related to Equity Units | 0 | 0 | 9 | [2] | |||||||||||||||||||||||||||||||||
Net income available to PPL common shareowners - Diluted | $ 1,896 | $ 680 | $ 1,737 | ||||||||||||||||||||||||||||||||||
Shares of Common Stock (Denominator) | |||||||||||||||||||||||||||||||||||||
Weighted-average shares - Basic EPS (in shares) | 677,592 | 669,814 | 653,504 | ||||||||||||||||||||||||||||||||||
Add incremental non-participating securities: | |||||||||||||||||||||||||||||||||||||
Share-based payment awards (in shares) | [6] | 2,854 | 2,772 | 1,910 | |||||||||||||||||||||||||||||||||
Equity Units (in shares) | 0 | 0 | 10,559 | [2] | |||||||||||||||||||||||||||||||||
Weighted-average shares - Diluted EPS (in shares) | 680,446 | 672,586 | 665,973 | ||||||||||||||||||||||||||||||||||
Basic EPS - Available to PPL common shareowners: | |||||||||||||||||||||||||||||||||||||
Income from continuing operations after income taxes (in dollars per share) | $ 0.60 | [7] | $ 0.59 | [7] | $ 0.37 | [7] | $ 0.83 | [7] | $ 2.80 | $ 2.38 | $ 2.19 | ||||||||||||||||||||||||||
Income (loss) from discontinued operations (net of income taxes) (in dollars per share) | 0.00 | (1.37) | 0.45 | ||||||||||||||||||||||||||||||||||
Net Income (in dollars per share) | $ 0.68 | [7] | $ 0.70 | [7] | $ 0.71 | [7] | $ 0.71 | [7] | 0.59 | [7] | 0.58 | [7] | (1.13) | [7] | 0.97 | [7] | 2.80 | 1.01 | 2.64 | ||||||||||||||||||
Diluted EPS - Available to PPL common shareowners: | |||||||||||||||||||||||||||||||||||||
Income from continuing operations after income taxes (in dollars per share) | 0.60 | [7] | 0.59 | [7] | 0.37 | [7] | 0.82 | [7] | 2.79 | 2.37 | 2.16 | ||||||||||||||||||||||||||
Income (loss) from discontinued operations (net of income taxes) (in dollars per share) | 0.00 | (1.36) | 0.45 | ||||||||||||||||||||||||||||||||||
Net Income (in dollars per share) | $ 0.68 | [7] | $ 0.69 | [7] | $ 0.71 | [7] | $ 0.71 | [7] | $ 0.59 | [7] | $ 0.58 | [7] | $ (1.13) | [7] | $ 0.96 | [7] | $ 2.79 | $ 1.01 | $ 2.61 | ||||||||||||||||||
Shares Issued (Numeric) [Abstract] | |||||||||||||||||||||||||||||||||||||
Common stock issued under stock-based compensation plans (in shares) | [8] | 3,224 | |||||||||||||||||||||||||||||||||||
Common stock issued under DRIP (in shares) | 1,562 | ||||||||||||||||||||||||||||||||||||
Stock Options [Member] | |||||||||||||||||||||||||||||||||||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||||||||||||||||||||||||||||||||||||
Shares excluded from the computations of diluted EPS | 696 | 1,087 | 1,816 | ||||||||||||||||||||||||||||||||||
Performance Units [Member] | |||||||||||||||||||||||||||||||||||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||||||||||||||||||||||||||||||||||||
Shares excluded from the computations of diluted EPS | 176 | 36 | 5 | ||||||||||||||||||||||||||||||||||
Restricted Stock Units [Member] | |||||||||||||||||||||||||||||||||||||
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | |||||||||||||||||||||||||||||||||||||
Shares excluded from the computations of diluted EPS | 0 | 0 | 31 | ||||||||||||||||||||||||||||||||||
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