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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 | Non-controlling Interests | Total
--- | --- | --- | --- | --- | --- | ---
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 |  |  |  |  |
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 - $0.625 and $0.6875 per share for the quarter ended March 31, 2020 and 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended June 30, 2020 and June 30, 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended September 30, 2020 and September 2021, 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 |  |  |  |  |
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 |  |  |  |  |
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 - $0.625 and $0.6875 per share for the quarter ended March 31, 2020 and 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended June 30, 2020 and June 30, 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended September 30, 2020 and September 2021, 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 - $0.625 and $0.6875 per share for the quarter ended March 31, 2020 and 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended June 30, 2020 and June 30, 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended September 30, 2020 and September 2021, 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 |  |  |  |  |
Balance at Dec. 31, 2020 |  | 0.1 | 5,193.2 | (77.9) | 7.3 | $ 5,122.7
Balance (in shares) at Dec. 31, 2020 | 63,600,000 |  |  |  |  | 63,600,000
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  | 266.9 |  | 1.3 | $ 268.2
Other comprehensive income (loss) |  |  |  | (1.2) |  | (1.2)
Dividend to noncontrolling interest holder |  |  |  |  | (2.4) | (2.4)
Stock-based compensation, net |  | 6.5 |  |  |  | 6.5
Stock-based compensation, net (in shares) | 107,000 |  |  |  |  |
Cash dividends - $0.625 and $0.6875 per share for the quarter ended March 31, 2020 and 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended June 30, 2020 and June 30, 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended September 30, 2020 and September 2021, respectively |  |  | (44.8) |  |  | (44.8)
Balance at Mar. 31, 2021 |  | 6.6 | 5,415.3 | (79.1) | 6.2 | 5,349.0
Balance (in shares) at Mar. 31, 2021 | 63,707,000 |  |  |  |  |
Balance at Dec. 31, 2020 |  | 0.1 | 5,193.2 | (77.9) | 7.3 | $ 5,122.7
Balance (in shares) at Dec. 31, 2020 | 63,600,000 |  |  |  |  | 63,600,000
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  |  |  |  | $ 995.1
Other comprehensive income (loss) |  |  |  |  |  | (5.0)
Repurchase of common shares |  |  |  |  |  | $ (155.0)
Repurchase of common shares (in shares) |  |  |  |  |  | 1,000,000.0
Balance at Sep. 30, 2021 |  | 0.1 | 5,943.5 | (82.9) | 7.2 | $ 5,867.9
Balance (in shares) at Sep. 30, 2021 | 62,694,000 |  |  |  |  | 62,694,000
Balance at Mar. 31, 2021 |  | 6.6 | 5,415.3 | (79.1) | 6.2 | $ 5,349.0
Balance (in shares) at Mar. 31, 2021 | 63,707,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  | 329.1 |  | 1.1 | 330.2
Other comprehensive income (loss) |  |  |  | 4.5 |  | 4.5
Stock-based compensation, net |  | 23.1 |  |  |  | 23.1
Stock-based compensation, net (in shares) | 8,000 |  |  |  |  |
Repurchase of common shares |  | (24.0) |  |  |  | (24.0)
Repurchase of common shares (in shares) | (147,000) |  |  |  |  |
Cash dividends - $0.625 and $0.6875 per share for the quarter ended March 31, 2020 and 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended June 30, 2020 and June 30, 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended September 30, 2020 and September 2021, respectively |  |  | (43.8) |  |  | (43.8)
Balance at Jun. 30, 2021 |  | 5.7 | 5,700.6 | (74.6) | 7.3 | 5,639.0
Balance (in shares) at Jun. 30, 2021 | 63,568,000 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |
Net income |  |  | 395.7 |  | 1.0 | 396.7
Other comprehensive income (loss) |  |  |  | (8.3) |  | (8.3)
Dividend to noncontrolling interest holder |  |  |  |  | (1.1) | (1.1)
Stock-based compensation, net |  | 16.3 |  |  |  | 16.3
Stock-based compensation, net (in shares) | 12,000 |  |  |  |  |
Repurchase of common shares |  | (21.9) | (109.1) |  |  | $ (131.0)
Repurchase of common shares (in shares) | (886,000) |  |  |  |  | 885,606
Cash dividends - $0.625 and $0.6875 per share for the quarter ended March 31, 2020 and 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended June 30, 2020 and June 30, 2021, respectively, and $0.625 and $0.6875 per share for the quarter ended September 30, 2020 and September 2021, respectively |  |  | (43.7) |  |  | $ (43.7)
Balance at Sep. 30, 2021 |  | $ 0.1 | $ 5,943.5 | $ (82.9) | $ 7.2 | $ 5,867.9
Balance (in shares) at Sep. 30, 2021 | 62,694,000 |  |  |  |  | 62,694,000

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