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Derivative Financial Instruments and Hedging Activities (Additional Information) (Details) - USD ($) | Feb. 28, 2021 | Aug. 31, 2020
--- | --- | ---
3.000% Senior Notes | Senior Notes |  |
Derivative [Line Items] |  |
Senior notes, stated interest rate (as a percent) | 3.00% |
Forward contracts | Cash flow hedging |  |
Derivative [Line Items] |  |
Aggregate notional amount | $ 3,200,000,000 | $ 2,900,000,000
Forward foreign exchange contracts | Forward contracts |  |
Derivative [Line Items] |  |
Aggregate notional amount | 658,100,000 | $ 355,200,000
Interest rate swaps | Cash flow hedging | 3.000% Senior Notes |  |
Derivative [Line Items] |  |
Aggregate notional amount | $ 200,000,000.0 |

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