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CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions | Common Stock | Common Stock and Additional Paid in Capital | Retained Earnings | Accumulated Other Comprehensive (Loss) Income | Non-controlling Interests | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2018 |  | $ 136.4 | $ 4,637.9 | $ (102.7) | $ 7.9 | $ 4,679.5
Balance (in shares) at Dec. 31, 2018 | 66,882,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  | 190.1 |  | 1.5 | 191.6
Other comprehensive income (loss) |  |  |  | 6.8 |  | 6.8
Stock-based compensation, net |  | (1.3) |  |  |  | (1.3)
Stock-based compensation, net (in shares) | 333,000 |  |  |  |  |
Stock options exercised |  | 0.8 |  |  |  | 0.8
Stock options exercised (in shares) | 20,000 |  |  |  |  |
Cash dividends - $0.55 and $0.625 per share for the quarter ended March 31, 2019 and March 31, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended June 30, 2019 and June 30, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended September 30, 2019 and September 30, 2020, respectively |  |  | (38.2) |  |  | (38.2)
Balance at Mar. 31, 2019 |  | 135.9 | 4,789.8 | (95.9) | 9.4 | 4,839.2
Balance (in shares) at Mar. 31, 2019 | 67,235,000 |  |  |  |  |
Balance at Dec. 31, 2018 |  | 136.4 | 4,637.9 | (102.7) | 7.9 | 4,679.5
Balance (in shares) at Dec. 31, 2018 | 66,882,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  |  |  |  | 539.8
Other comprehensive income (loss) |  |  |  |  |  | (0.7)
Repurchase of common shares |  |  |  |  |  | $ (50.0)
Repurchase of common shares (in shares) |  |  |  |  |  | 600,000
Balance at Sep. 30, 2019 |  | 114.9 | 5,061.9 | (103.4) | 8.3 | $ 5,081.7
Balance (in shares) at Sep. 30, 2019 | 66,656,000 |  |  |  |  |
Balance at Mar. 31, 2019 |  | 135.9 | 4,789.8 | (95.9) | 9.4 | 4,839.2
Balance (in shares) at Mar. 31, 2019 | 67,235,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  | 183.1 |  | 1.2 | 184.3
Other comprehensive income (loss) |  |  |  | 1.2 |  | 1.2
Noncontrolling interest purchased |  |  |  |  | (0.4) | (0.4)
Dividend to noncontrolling interest holder |  |  |  |  | (1.7) | (1.7)
Stock-based compensation, net |  | 13.8 |  |  |  | 13.8
Stock-based compensation, net (in shares) | 12,000 |  |  |  |  |
Repurchase of common shares |  | (50.0) |  |  |  | (50.0)
Repurchase of common shares (in shares) | (593,000) |  |  |  |  |
Cash dividends - $0.55 and $0.625 per share for the quarter ended March 31, 2019 and March 31, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended June 30, 2019 and June 30, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended September 30, 2019 and September 30, 2020, respectively |  |  | (36.9) |  |  | (36.9)
Balance at Jun. 30, 2019 |  | 99.7 | 4,936.0 | (94.7) | 8.5 | 4,949.5
Balance (in shares) at Jun. 30, 2019 | 66,654,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  | 162.7 |  | 1.2 | 163.9
Other comprehensive income (loss) |  |  |  | (8.7) |  | (8.7)
Dividend to noncontrolling interest holder |  |  |  |  | (1.4) | (1.4)
Stock-based compensation, net |  | 15.2 |  |  |  | $ 15.2
Stock-based compensation, net (in shares) | 2,000 |  |  |  |  |
Repurchase of common shares (in shares) |  |  |  |  |  | 0
Cash dividends - $0.55 and $0.625 per share for the quarter ended March 31, 2019 and March 31, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended June 30, 2019 and June 30, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended September 30, 2019 and September 30, 2020, respectively |  |  | (36.8) |  |  | $ (36.8)
Balance at Sep. 30, 2019 |  | 114.9 | 5,061.9 | (103.4) | 8.3 | 5,081.7
Balance (in shares) at Sep. 30, 2019 | 66,656,000 |  |  |  |  |
Balance at Dec. 31, 2019 |  | 122.2 | 5,189.5 | (105.1) | 7.5 | $ 5,214.1
Balance (in shares) at Dec. 31, 2019 | 66,854,000 |  |  |  |  | 66,854,000
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  | 61.7 |  | 1.2 | $ 62.9
Other comprehensive income (loss) |  |  |  | (31.4) |  | (31.4)
Noncontrolling interest purchased |  | (6.9) |  |  | (1.1) | (8.0)
Dividend to noncontrolling interest holder |  |  |  |  | (0.5) | (0.5)
Stock-based compensation, net |  | 3.8 |  |  |  | 3.8
Stock-based compensation, net (in shares) | 111,000 |  |  |  |  |
Stock options exercised |  | 0.3 |  |  |  | 0.3
Stock options exercised (in shares) | 6,000 |  |  |  |  |
Repurchase of common shares |  | (119.3) | (180.7) |  |  | (300.0)
Repurchase of common shares (in shares) | (3,330,000) |  |  |  |  |
Cash dividends - $0.55 and $0.625 per share for the quarter ended March 31, 2019 and March 31, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended June 30, 2019 and June 30, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended September 30, 2019 and September 30, 2020, respectively |  |  | (41.9) |  |  | (41.9)
Balance at Mar. 31, 2020 |  | 0.1 | 5,028.6 | (136.5) | 7.1 | 4,899.3
Balance (in shares) at Mar. 31, 2020 | 63,641,000 |  |  |  |  |
Balance at Dec. 31, 2019 |  | 122.2 | 5,189.5 | (105.1) | 7.5 | $ 5,214.1
Balance (in shares) at Dec. 31, 2019 | 66,854,000 |  |  |  |  | 66,854,000
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  |  |  |  | $ 241.9
Other comprehensive income (loss) |  |  |  |  |  | 8.3
Repurchase of common shares |  |  |  |  |  | $ (300.2)
Repurchase of common shares (in shares) |  |  |  |  |  | 3,300,000
Balance at Sep. 30, 2020 |  | 11.1 | 5,125.5 | (96.8) | 7.5 | $ 5,047.3
Balance (in shares) at Sep. 30, 2020 | 63,756,000 |  |  |  |  | 63,756,000
Balance at Mar. 31, 2020 |  | 0.1 | 5,028.6 | (136.5) | 7.1 | $ 4,899.3
Balance (in shares) at Mar. 31, 2020 | 63,641,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  | 80.2 |  | 0.5 | 80.7
Other comprehensive income (loss) |  |  |  | 12.4 |  | 12.4
Stock-based compensation, net |  | 9.0 |  |  |  | 9.0
Stock-based compensation, net (in shares) | 13,000 |  |  |  |  |
Cash dividends - $0.55 and $0.625 per share for the quarter ended March 31, 2019 and March 31, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended June 30, 2019 and June 30, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended September 30, 2019 and September 30, 2020, respectively |  |  | (39.9) |  |  | (39.9)
Balance at Jun. 30, 2020 |  | 9.1 | 5,068.9 | (124.1) | 7.6 | 4,961.5
Balance (in shares) at Jun. 30, 2020 | 63,654,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  | 97.6 |  | 0.7 | 98.3
Other comprehensive income (loss) |  |  |  | 27.3 |  | 27.3
Dividend to noncontrolling interest holder |  |  |  |  | (0.8) | (0.8)
Stock-based compensation, net |  | 2.2 |  |  |  | 2.2
Stock-based compensation, net (in shares) | 104,000 |  |  |  |  |
Repurchase of common shares |  | (0.2) |  |  |  | $ (0.2)
Repurchase of common shares (in shares) | (2,000) |  |  |  |  | 2,466
Cash dividends - $0.55 and $0.625 per share for the quarter ended March 31, 2019 and March 31, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended June 30, 2019 and June 30, 2020, respectively, and $0.55 and $0.625 per share for the quarter ended September 30, 2019 and September 30, 2020, respectively |  |  | (41.0) |  |  | $ (41.0)
Balance at Sep. 30, 2020 |  | $ 11.1 | $ 5,125.5 | $ (96.8) | $ 7.5 | $ 5,047.3
Balance (in shares) at Sep. 30, 2020 | 63,756,000 |  |  |  |  | 63,756,000

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