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Earnings per Share (EPS) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 31, 2018
EPS numerator: |  |  |  |
(Loss) income from continuing operations, net of income taxes | $ (1,859.8) | $ (188.3) | $ 645.7 |
Less: Series A Convertible Preferred Stock dividends | 0.0 | 0.0 | 102.5 |
Less: Net (loss) income attributable to noncontrolling interests | (3.5) | 26.2 | 16.9 |
(Loss) income from continuing operations attributable to common stockholders, before allocation of earnings to participating securities | (1,856.3) | (214.5) | 526.3 |
Less: Earnings allocated to participating securities | 0.0 | 0.0 | 7.9 |
(Loss) income from continuing operations attributable to common stockholders, after allocation of earnings to participating securities | (1,856.3) | (214.5) | 518.4 |
(Loss) income from discontinued operations, net of income taxes | (14.0) | 3.2 | 18.1 |
Less: Income from discontinued operations allocated to participating securities | 0.0 | 0.0 | 0.3 |
(Loss) income from discontinued operations attributable to common stockholders, after allocation of earnings to participating securities | (14.0) | 3.2 | 17.8 |
Net (loss) income attributable to common stockholders, after allocation of earnings to participating securities | $ (1,870.3) | $ (211.3) | $ 536.2 |
EPS denominator: |  |  |  |
Weighted average shares outstanding — basic (in shares) | 97.7 | 103.7 | 119.3 |
Impact of dilutive securities (in shares) | 0.0 | 0.0 | 1.7 |
Weighted average shares outstanding — diluted (in shares) | 97.7 | 103.7 | 121.0 |
Basic EPS attributable to common stockholders: |  |  |  |
(Loss) income from continuing operations (in dollars per share) | $ (18.99) | $ (2.07) | $ 4.35 |
(Loss) income from discontinued operations (in dollars per share) | (0.15) | 0.03 | 0.15 |
Basic (loss) income per share (in dollars per share) | (19.14) | (2.04) | 4.50 |
Diluted EPS attributable to common stockholders: |  |  |  |
(Loss) income from continuing operations (in dollars per share) | (18.99) | (2.07) | 4.28 |
(Loss) income from discontinued operations (in dollars per share) | (0.15) | 0.03 | 0.15 |
Diluted (loss) income per share (in dollars per share) | $ (19.14) | $ (2.04) | $ 4.43 |
Undistributed Earnings (Loss) Allocated to Participating Securities, Diluted |  |  | $ 0.1 |
Weighted average shares outstanding — diluted (in shares) |  |  | 2.1 |
Earnings per Share (EPS) (Textuals) [Abstract] |  |  |  |
Antidilutive shares excluded from EPS calculation | 2.2 | 1.9 | 0.1 |
Convertible Preferred Stock |  |  |  |
Earnings per Share (EPS) (Textuals) [Abstract] |  |  |  |
Preferred Stock, shares issued (in shares) |  |  |  | 30.0
Common Stock |  |  |  |
Earnings per Share (EPS) (Textuals) [Abstract] |  |  |  |
Convertible preferred stock, shares issued upon conversion |  |  |  | 59.3

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