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STATEMENTS OF CHANGES IN CONSOLIDATED EQUITY - USD ($) $ in Millions | Total | [CommonStockMember] | Additional Paid-in Capital [Member] | [RetainedEarningsMember] | Treasury Stock | [AccumulatedOtherComprehensiveIncomeMember] | [NoncontrollingInterestMember]
--- | --- | --- | --- | --- | --- | --- | ---
Total Stockholders' Equity at Dec. 31, 2021 | $ 832.7 | $ 12.7 | $ 1,596.7 | $ 72.7 | $ (4.8) | $ (991.7) | $ 147.1
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 65.3 |  |  | 54.0 |  |  | 11.3
Other comprehensive income | 63.4 |  |  |  |  | 81.8 | (18.4)
Purchase of treasury stock | (104.9) |  |  |  | (104.9) |  |
Conversion of convertible notes | 82.5 | 0.3 | 45.4 | (26.7) | 63.5 |  |
Dividends paid to noncontrolling interest | (16.0) |  |  |  |  |  | (16.0)
Sale of subsidiary shares to noncontrolling interest | 0.9 |  |  |  |  |  | 0.9
Employee stock plans | 14.5 | 0.1 | 20.1 | 0.0 | (5.7) |  |
Total Stockholders' Equity at Sep. 30, 2022 | 938.4 | 13.1 | 1,662.2 | 100.0 | (51.9) | (909.9) | 124.9
Total Stockholders' Equity at Jun. 30, 2022 | 893.9 | 13.1 | 1,656.6 | 38.9 | (36.8) | (908.9) | 131.0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 64.4 |  |  | 61.1 |  |  | 3.3
Other comprehensive income | (10.4) |  |  |  |  | (1.0) | (9.4)
Purchase of treasury stock | (15.0) |  |  |  | (15.0) |  |
Employee stock plans | 5.5 | 0.0 | 5.6 | 0.0 | (0.1) |  |
Total Stockholders' Equity at Sep. 30, 2022 | 938.4 | 13.1 | 1,662.2 | 100.0 | (51.9) | (909.9) | 124.9
Total Stockholders' Equity at Dec. 31, 2022 | 1,157.2 | 13.1 | 1,668.1 | 176.9 | (87.0) | (725.2) | 111.3
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 230.9 |  |  | 221.8 |  |  | 9.1
Other comprehensive income | 12.9 |  |  |  |  | 16.3 | (3.4)
Purchase of treasury stock | (55.5) |  |  |  | (55.5) |  |
Employee stock plans | 10.4 | 0.1 | 21.4 | 0.0 | (11.1) |  |
Total Stockholders' Equity at Sep. 30, 2023 | 1,355.9 | 13.2 | 1,689.5 | 398.7 | (153.6) | (708.9) | 117.0
Total Stockholders' Equity at Jun. 30, 2023 | 1,309.2 | 13.2 | 1,682.0 | 323.0 | (107.9) | (716.3) | 115.2
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Net income | 79.6 |  |  | 75.7 |  |  | 3.9
Other comprehensive income | 5.3 |  |  |  |  | 7.4 | (2.1)
Purchase of treasury stock | (45.4) |  |  |  | (45.4) |  |
Employee stock plans | 7.2 | 0.0 | 7.5 | 0.0 | (0.3) |  |
Total Stockholders' Equity at Sep. 30, 2023 | $ 1,355.9 | $ 13.2 | $ 1,689.5 | $ 398.7 | $ (153.6) | $ (708.9) | $ 117.0

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