Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions |
Total |
Common Stock [Member] |
Additional Paid-in Capital [Member] |
Retained Earnings [Member] |
Accumulated Other Comprehensive Income [Member] |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Beginning balance, Shares at May. 31, 2020 | 358.8 | ||||||||||
| Beginning balance at May. 31, 2020 | $ 2,781.4 | $ 3.6 | $ 1,289.9 | $ 1,431.4 | $ 56.5 | ||||||
| Net income | 834.5 | 834.5 | |||||||||
| Unrealized losses on securities, net of tax benefit | (12.7) | (12.7) | |||||||||
| Reclassification adjustment for realized gains on securities, net of tax expense | [1] | (0.8) | (0.8) | ||||||||
| Cash dividends declared | (670.5) | (670.5) | |||||||||
| Repurchases of common shares, Shares | [2] | (0.9) | |||||||||
| Repurchases of common shares | [2] | (76.0) | (1.7) | (74.3) | |||||||
| Stock-based compensation costs | 38.1 | 38.1 | |||||||||
| Foreign currency translation adjustment | 14.2 | 14.2 | |||||||||
| Activity related to equity-based plans, Shares | 2.4 | ||||||||||
| Activity related to equity-based plans | 68.2 | 90.0 | (21.8) | ||||||||
| Ending balance, Shares at Feb. 28, 2021 | 360.3 | ||||||||||
| Ending balance at Feb. 28, 2021 | 2,976.4 | $ 3.6 | 1,416.3 | 1,499.3 | 57.2 | ||||||
| Beginning balance, Shares at Nov. 30, 2020 | 360.6 | ||||||||||
| Beginning balance at Nov. 30, 2020 | 2,889.7 | $ 3.6 | 1,394.1 | 1,418.9 | 73.1 | ||||||
| Net income | 350.5 | 350.5 | |||||||||
| Unrealized losses on securities, net of tax benefit | (20.0) | (20.0) | |||||||||
| Reclassification adjustment for realized gains on securities, net of tax expense | [1] | (0.3) | (0.3) | ||||||||
| Cash dividends declared | (223.8) | (223.8) | |||||||||
| Repurchases of common shares, Shares | [2] | (0.5) | |||||||||
| Repurchases of common shares | [2] | (47.2) | (1.0) | (46.2) | |||||||
| Stock-based compensation costs | 12.6 | 12.6 | |||||||||
| Foreign currency translation adjustment | 4.4 | 4.4 | |||||||||
| Activity related to equity-based plans, Shares | 0.2 | ||||||||||
| Activity related to equity-based plans | 10.5 | 10.6 | (0.1) | ||||||||
| Ending balance, Shares at Feb. 28, 2021 | 360.3 | ||||||||||
| Ending balance at Feb. 28, 2021 | $ 2,976.4 | $ 3.6 | 1,416.3 | 1,499.3 | 57.2 | ||||||
| Beginning balance, Shares at May. 31, 2021 | 359.8 | 359.8 | |||||||||
| Beginning balance at May. 31, 2021 | $ 2,948.0 | $ 3.6 | 1,446.7 | 1,445.9 | 51.8 | ||||||
| Net income | 1,096.4 | 1,096.4 | |||||||||
| Unrealized losses on securities, net of tax benefit | (83.0) | (83.0) | |||||||||
| Reclassification adjustment for realized gains on securities, net of tax expense | [3] | (0.1) | (0.1) | ||||||||
| Cash dividends declared | (714.9) | (714.9) | |||||||||
| Stock-based compensation costs | 39.2 | 39.2 | |||||||||
| Foreign currency translation adjustment | (15.7) | (15.7) | |||||||||
| Activity related to equity-based plans, Shares | 1.2 | ||||||||||
| Activity related to equity-based plans | $ 16.1 | $ 0.0 | 45.0 | (28.9) | |||||||
| Ending balance, Shares at Feb. 28, 2022 | 361.0 | 361.0 | |||||||||
| Ending balance at Feb. 28, 2022 | $ 3,286.0 | $ 3.6 | 1,530.9 | 1,798.5 | (47.0) | ||||||
| Beginning balance, Shares at Nov. 30, 2021 | 360.8 | ||||||||||
| Beginning balance at Nov. 30, 2021 | 3,119.8 | $ 3.6 | 1,505.5 | 1,606.9 | 3.8 | ||||||
| Net income | 430.7 | 430.7 | |||||||||
| Unrealized losses on securities, net of tax benefit | (50.3) | (50.3) | |||||||||
| Cash dividends declared | (238.5) | (238.5) | |||||||||
| Stock-based compensation costs | 12.8 | 12.8 | |||||||||
| Foreign currency translation adjustment | (0.5) | (0.5) | |||||||||
| Activity related to equity-based plans, Shares | 0.2 | ||||||||||
| Activity related to equity-based plans | $ 12.0 | $ 0.0 | 12.6 | (0.6) | |||||||
| Ending balance, Shares at Feb. 28, 2022 | 361.0 | 361.0 | |||||||||
| Ending balance at Feb. 28, 2022 | $ 3,286.0 | $ 3.6 | $ 1,530.9 | $ 1,798.5 | $ (47.0) | ||||||
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