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Condensed Statements of Consolidated Shareholders' Equity (Unaudited) - USD ($) $ in Millions | Total | Common Shares | Additional Capital | Retained Income | Accumulated Other Comprehensive Income (Loss)
--- | --- | --- | --- | --- | ---
Balance at Apr. 30, 2018 | $ 7,891.1 | $ 28.9 | $ 5,739.7 | $ 2,239.2 | $ (116.7)
Balance, shares at Apr. 30, 2018 |  | 113,572,840 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 133.0 |  |  | 133.0 |
Other comprehensive income (loss) | (2.1) |  |  |  | (2.1)
Comprehensive Income | 130.9 |  |  |  |
Purchase of treasury shares | (4.7) | $ 0.0 | (4.6) | (0.1) |
Purchase of treasury shares, shares |  | (43,913) |  |  |
Stock plans | 10.0 | $ 0.0 | 10.0 |  |
Stock plans, shares |  | 243,521 |  |  |
Cash dividends declared | (96.5) |  |  | (96.5) |
Other | 0.0 |  |  | 0.0 |
Balance at Jul. 31, 2018 | 7,930.8 | $ 28.9 | 5,745.1 | 2,275.6 | (118.8)
Balance, shares at Jul. 31, 2018 |  | 113,772,448 |  |  |
Balance at Apr. 30, 2018 | 7,891.1 | $ 28.9 | 5,739.7 | 2,239.2 | (116.7)
Balance, shares at Apr. 30, 2018 |  | 113,572,840 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 442.9 |  |  |  |
Other comprehensive income (loss) | (36.6) |  |  |  |
Comprehensive Income | 406.3 |  |  |  |
Balance at Jan. 31, 2019 | 8,021.6 | $ 28.9 | 5,753.4 | 2,392.6 | (153.3)
Balance, shares at Jan. 31, 2019 |  | 113,758,456 |  |  |
Balance at Jul. 31, 2018 | 7,930.8 | $ 28.9 | 5,745.1 | 2,275.6 | (118.8)
Balance, shares at Jul. 31, 2018 |  | 113,772,448 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 188.5 |  |  | 188.5 |
Other comprehensive income (loss) | 2.4 |  |  |  | 2.4
Comprehensive Income | 190.9 |  |  |  |
Purchase of treasury shares | (0.3) | $ 0.0 | (0.3) | 0.0 |
Purchase of treasury shares, shares |  | (2,485) |  |  |
Stock plans | 5.1 | $ 0.0 | 5.1 |  |
Stock plans, shares |  | (9,883) |  |  |
Cash dividends declared | (96.5) |  |  | (96.5) |
Other | 0.0 | $ 0.0 |  | 0.0 |
Balance at Oct. 31, 2018 | 8,030.0 | $ 28.9 | 5,749.9 | 2,367.6 | (116.4)
Balance, shares at Oct. 31, 2018 |  | 113,760,080 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 121.4 |  |  | 121.4 |
Other comprehensive income (loss) | (36.9) |  |  |  | (36.9)
Comprehensive Income | 84.5 |  |  |  |
Purchase of treasury shares | (0.2) | $ 0.0 | (0.2) | 0.0 |
Purchase of treasury shares, shares |  | (1,746) |  |  |
Stock plans | 3.7 | $ 0.0 | 3.7 |  |
Stock plans, shares |  | 122 |  |  |
Cash dividends declared | (96.4) |  |  | (96.4) |
Balance at Jan. 31, 2019 | 8,021.6 | $ 28.9 | 5,753.4 | 2,392.6 | (153.3)
Balance, shares at Jan. 31, 2019 |  | 113,758,456 |  |  |
Balance at Apr. 30, 2019 | $ 7,970.5 | $ 28.9 | 5,755.8 | 2,367.6 | (181.8)
Balance, shares at Apr. 30, 2019 | 113,700,000 | 113,742,296 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | $ 154.6 |  |  | 154.6 |
Other comprehensive income (loss) | (34.9) |  |  |  | (34.9)
Comprehensive Income | 119.7 |  |  |  |
Purchase of treasury shares | (2.9) | $ 0.0 | (2.7) | (0.2) |
Purchase of treasury shares, shares |  | (22,793) |  |  |
Stock plans | 20.5 | $ 0.1 | 20.4 |  |
Stock plans, shares |  | 330,289 |  |  |
Cash dividends declared | (100.1) |  |  | (100.1) |
Other | 0.0 |  |  | 0.0 |
Balance at Jul. 31, 2019 | 8,007.7 | $ 29.0 | 5,773.5 | 2,421.9 | (216.7)
Balance, shares at Jul. 31, 2019 |  | 114,049,792 |  |  |
Balance at Apr. 30, 2019 | $ 7,970.5 | $ 28.9 | 5,755.8 | 2,367.6 | (181.8)
Balance, shares at Apr. 30, 2019 | 113,700,000 | 113,742,296 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | $ 553.2 |  |  |  |
Other comprehensive income (loss) | (84.5) |  |  |  |
Comprehensive Income | 468.7 |  |  |  |
Balance at Jan. 31, 2020 | $ 8,170.4 | $ 29.0 | 5,787.2 | 2,620.5 | (266.3)
Balance, shares at Jan. 31, 2020 | 114,000,000.0 | 114,041,313 |  |  |
Balance at Jul. 31, 2019 | $ 8,007.7 | $ 29.0 | 5,773.5 | 2,421.9 | (216.7)
Balance, shares at Jul. 31, 2019 |  | 114,049,792 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 211.2 |  |  | 211.2 |
Other comprehensive income (loss) | (31.7) |  |  |  | (31.7)
Comprehensive Income | 179.5 |  |  |  |
Purchase of treasury shares | (0.6) | $ 0.0 | (0.6) | 0.0 |
Purchase of treasury shares, shares |  | (4,930) |  |  |
Stock plans | 8.8 | $ 0.0 | 8.8 |  |
Stock plans, shares |  | 14,882 |  |  |
Cash dividends declared | (100.1) |  |  | (100.1) |
Other | 0.0 |  |  | 0.0 |
Balance at Oct. 31, 2019 | 8,095.3 | $ 29.0 | 5,781.7 | 2,533.0 | (248.4)
Balance, shares at Oct. 31, 2019 |  | 114,059,744 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income | 187.4 |  |  | 187.4 |
Other comprehensive income (loss) | (17.9) |  |  |  | (17.9)
Comprehensive Income | 169.5 |  |  |  |
Purchase of treasury shares | (0.8) | $ 0.0 | (1.0) | 0.2 |
Purchase of treasury shares, shares |  | (7,180) |  |  |
Stock plans | 6.5 | $ 0.0 | 6.5 |  |
Stock plans, shares |  | (11,251) |  |  |
Cash dividends declared | (100.1) |  |  | (100.1) |
Other | 0.0 |  |  | 0.0 |
Balance at Jan. 31, 2020 | $ 8,170.4 | $ 29.0 | $ 5,787.2 | $ 2,620.5 | $ (266.3)
Balance, shares at Jan. 31, 2020 | 114,000,000.0 | 114,041,313 |  |  |

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