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v3.20.2

Shareholder's Equity - Change in Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Balance, beginning of period | $ 1,606.3 | $ 1,490.2 | $ 1,573.2 | $ 1,445.1 | $ 1,369.5 | $ 1,396.3 | $ 1,573.2 | $ 1,396.3
Net income | 82.3 | 91.2 | 74.3 | 56.3 | 66.1 | 55.4 | $ 247.8 | 177.8
Activity related to stock-based compensation | $ 13.9 | 20.4 | 12.8 | 16.3 | 19.7 | 10.7 |  |
Share purchased under share repurchase program (in shares) | 0 |  |  |  |  |  | 761,500 |
Shares purchased under share repurchase program |  |  | (115.5) |  |  | (83.1) | $ (115.5) |
Dividends declared | $ (11.9) |  | (11.8) | (11.9) | (11.4) | (10.6) |  |
Other comprehensive income (loss), net of tax | 28.3 | 4.5 | (42.7) | (18.2) | 1.2 | 0.8 | (9.9) | (16.2)
Balance, end of period | $ 1,718.9 | $ 1,606.3 | $ 1,490.2 | $ 1,487.6 | $ 1,445.1 | $ 1,369.5 | 1,718.9 | $ 1,487.6
Dividends declared per share (in dollars per share) | $ 0.16 |  | $ 0.16 | $ 0.16 | $ 0.15 | $ 0.15 |  |
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Balance, beginning of period |  |  | $ (0.1) |  |  |  | $ (0.1) |
Common Stock |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Balance (in shares) | 75,300,000 | 75,300,000 | 75,300,000 | 75,300,000 | 75,300,000 | 75,300,000 | 75,300,000 | 75,300,000
Balance, beginning of period | $ 18.8 | $ 18.8 | $ 18.8 | $ 18.8 | $ 18.8 | $ 18.8 | $ 18.8 | $ 18.8
Activity related to stock-based compensation | $ 0.0 |  |  |  |  |  |  |
Activity related to stock -based compensation (in shares) | 0 |  |  |  |  |  |  |
Balance (in shares) | 75,300,000 | 75,300,000 | 75,300,000 | 75,300,000 | 75,300,000 | 75,300,000 | 75,300,000 | 75,300,000
Balance, end of period | $ 18.8 | $ 18.8 | $ 18.8 | $ 18.8 | $ 18.8 | $ 18.8 | $ 18.8 | $ 18.8
Capital in Excess of Par Value |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Balance, beginning of period | 263.1 | 267.6 | 272.7 | 273.4 | 278.5 | 282.0 | 272.7 | 282.0
Activity related to stock-based compensation | 5.1 | (4.5) | (5.1) | (4.9) | (5.1) | (3.5) |  |
Balance, end of period | $ 268.2 | $ 263.1 | $ 267.6 | $ 268.5 | $ 273.4 | $ 278.5 | $ 268.2 | $ 268.5
Treasury Stock |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Balance (in shares) | 1,500,000 | 1,700,000 | 1,200,000 | 1,600,000 | 1,800,000 | 1,200,000 | 1,200,000 | 1,200,000
Balance, beginning of period | $ (190.8) | $ (215.7) | $ (118.1) | $ (147.8) | $ (172.6) | $ (103.7) | $ (118.1) | $ (103.7)
Activity related to stock-based compensation | $ 8.8 | $ 24.9 | $ 17.9 | $ 21.2 | $ 24.8 | $ 14.2 |  |
Activity related to stock -based compensation (in shares) | (100,000) | (200,000) | (300,000) | (300,000) | (200,000) | (200,000) |  |
Share purchased under share repurchase program (in shares) |  |  | 800,000 |  |  | (800,000) |  |
Shares purchased under share repurchase program |  |  | $ (115.5) |  |  | $ (83.1) |  |
Balance (in shares) | 1,400,000 | 1,500,000 | 1,700,000 | 1,300,000 | 1,600,000 | 1,800,000 | 1,400,000 | 1,300,000
Balance, end of period | $ (182.0) | $ (190.8) | $ (215.7) | $ (126.6) | $ (147.8) | $ (172.6) | $ (182.0) | $ (126.6)
Retained earnings |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Balance, beginning of period | 1,703.0 | 1,611.8 | 1,549.4 | 1,452.9 | 1,398.2 | 1,353.4 | 1,549.4 | 1,353.4
Net income | 82.3 | 91.2 | 74.3 | 56.3 | 66.1 | 55.4 |  |
Dividends declared | (11.9) |  | (11.8) | (11.9) | (11.4) | (10.6) |  |
Balance, end of period | 1,773.4 | 1,703.0 | 1,611.8 | 1,497.3 | 1,452.9 | 1,398.2 | 1,773.4 | 1,497.3
Retained earnings | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Balance, beginning of period |  |  | (0.1) |  |  |  | (0.1) |
Accumulated other comprehensive loss |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Balance, beginning of period | (187.8) | (192.3) | (149.6) | (152.2) | (153.4) | (154.2) | (149.6) | (154.2)
Other comprehensive income (loss), net of tax | 28.3 | 4.5 | (42.7) | (18.2) | 1.2 | 0.8 |  |
Balance, end of period | $ (159.5) | $ (187.8) | $ (192.3) | $ (170.4) | $ (152.2) | $ (153.4) | $ (159.5) | $ (170.4)

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