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Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income [Member] | Total
--- | --- | --- | --- | --- | ---
Beginning balance, Shares at May. 31, 2020 |  | 358.8 |  |  |  |
Beginning balance at May. 31, 2020 |  | $ 3.6 | $ 1,289.9 | $ 1,431.4 | $ 56.5 | $ 2,781.4
Net income |  |  |  | 211.6 |  | 211.6
Unrealized (losses) gains on securities, net of tax (benefit) expense |  |  |  |  | 13.0 | 13.0
Reclassification adjustment for realized gains on securities, net of tax expense | [1] |  |  |  | (0.2) | (0.2)
Cash dividends declared |  |  |  | (223.2) |  | (223.2)
Repurchases of common shares, Shares | [2] | (0.4) |  |  |  |
Repurchases of common shares | [2] |  | (0.7) | (28.1) |  | (28.8)
Stock-based compensation costs |  |  | 13.3 |  |  | 13.3
Foreign currency translation adjustment |  |  |  |  | 10.2 | 10.2
Activity related to equity-based plans, Shares |  | 1.1 |  |  |  |
Activity related to equity-based plans |  |  | 22.8 | (21.5) |  | 1.3
Ending balance, Shares at Aug. 31, 2020 |  | 359.5 |  |  |  |
Ending balance at Aug. 31, 2020 |  | $ 3.6 | 1,325.3 | 1,370.2 | 79.5 | $ 2,778.6
Beginning balance, Shares at May. 31, 2021 |  | 359.8 |  |  |  | 359.8
Beginning balance at May. 31, 2021 |  | $ 3.6 | 1,446.7 | 1,445.9 | 51.8 | $ 2,948.0
Net income |  |  |  | 333.6 |  | 333.6
Unrealized (losses) gains on securities, net of tax (benefit) expense |  |  |  |  | (0.5) | (0.5)
Reclassification adjustment for realized gains on securities, net of tax expense | [1] |  |  |  | (0.1) | (0.1)
Cash dividends declared |  |  |  | (238.1) |  | (238.1)
Stock-based compensation costs |  |  | 12.4 |  |  | 12.4
Foreign currency translation adjustment |  |  |  |  | (6.1) | (6.1)
Activity related to equity-based plans, Shares |  | 0.8 |  |  |  |
Activity related to equity-based plans |  |  | 22.4 | (28.1) |  | $ (5.7)
Ending balance, Shares at Aug. 31, 2021 |  | 360.6 |  |  |  | 360.6
Ending balance at Aug. 31, 2021 |  | $ 3.6 | $ 1,481.5 | $ 1,513.3 | $ 45.1 | $ 3,043.5
[1] | Reclassification adjustments out of accumulated other comprehensive income for realized gains, net of tax, on the sale of available-for-sale (“AFS”) securities are reflected in interest on funds held for clients and other expense, net on the Consolidated Statements of Income and Comprehensive Income.
[2] | The Company maintains two programs to repurchase up to $400.0 million of its common stock under each program, with authorization expiring on May 31, 2022 and January 31, 2024, respectively. The purpose of these programs is to manage common stock dilution. All shares of common stock repurchased were retired.

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