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v3.19.3.a.u2

Statements of Consolidated Changes in Equity - USD ($) $ in Millions | Total | Common Stock [Member] | Capital in Excess of Par Value of Shares [Member] | Retained Earnings [Member] | Common Shares in Treasury [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | AOCI Attributable to Noncontrolling Interest [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance, beginning of period (in shares) at Dec. 31, 2016 |  | 233,100,000 |  |  |  |  |  |
Balance, beginning of period at Dec. 31, 2016 | $ (1,330.5) | $ 29.8 | $ 3,347.0 | $ (4,574.3) | $ (245.5) | $ (21.3) |  | $ 133.8
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Comprehensive income (loss) | 360.2 |  |  | 367.0 |  | (4.0) |  | (2.8)
Issuance of convertible debt | 83.4 |  | 83.4 |  |  |  |  |
Equity offering (in shares) |  | 63,300,000 |  |  |  |  |  |
Equity offering (value) | 661.3 | $ 7.9 | 653.4 |  |  |  |  |
Acquisition of noncontrolling interest | (105.0) |  | (70.2) |  |  |  | $ (18.9) | (15.9)
Distributions of partnership equity | (128.8) |  | (17.3) |  |  |  | $ 5.2 | (116.7)
Capital contributions by noncontrolling interest to subsidiary | 1.8 |  |  |  |  |  |  | 1.8
Stock and other incentive plans (in shares) |  | 1,000,000.0 |  |  |  |  |  |
Stock and other incentive plans | 13.5 |  | (62.4) |  | 75.9 |  |  |
Balance, end of period (in shares) at Dec. 31, 2017 |  | 297,400,000 |  |  |  |  |  |
Balance, end of period at Dec. 31, 2017 | (444.1) | $ 37.7 | 3,933.9 | (4,207.3) | (169.6) | (39.0) |  | 0.2
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Adoption of accounting standard | 34.0 |  |  | 34.0 |  |  |  |
Comprehensive income (loss) | 883.2 |  |  | 1,128.1 |  | (244.9) |  | 0.0
Capital contributions by noncontrolling interest to subsidiary | (0.2) |  |  |  |  |  |  | (0.2)
Stock and other incentive plans (in shares) |  | 600,000 |  |  |  |  |  |
Stock and other incentive plans | $ 13.8 |  | (17.2) |  | 31.0 |  |  |
Common stock repurchases (in shares) | (5,400,000) | (5,400,000) |  |  |  |  |  |
Common stock repurchased (value) | $ (47.5) |  |  |  | (47.5) |  |  |
Common stock dividends 2019 - $0.27 per share (2018 - $0.05 per share) | $ (15.0) |  |  | (15.0) |  |  |  |
Balance, end of period (in shares) at Dec. 31, 2018 | 292,611,569 | 292,600,000 |  |  |  |  |  |
Balance, end of period at Dec. 31, 2018 | $ 424.2 | $ 37.7 | 3,916.7 | (3,060.2) | (186.1) | (283.9) |  | 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Comprehensive income (loss) | 257.9 |  |  | 292.8 |  | (34.9) |  | 0.0
Stock and other incentive plans (in shares) |  | 1,900,000 |  |  |  |  |  |
Stock and other incentive plans | $ 3.7 |  | (44.6) |  | 48.3 |  |  |
Common stock repurchases (in shares) | (24,400,000) | (24,400,000) |  |  |  |  |  |
Common stock repurchased (value) | $ (252.9) |  |  |  | (252.9) |  |  |
Common stock dividends 2019 - $0.27 per share (2018 - $0.05 per share) | $ (75.0) |  |  | (75.0) |  |  |  |
Balance, end of period (in shares) at Dec. 31, 2019 | 270,084,005 | 270,100,000 |  |  |  |  |  |
Balance, end of period at Dec. 31, 2019 | $ 357.9 | $ 37.7 | $ 3,872.1 | $ (2,842.4) | $ (390.7) | $ (318.8) |  | $ 0.0

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