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v3.22.2.2

Fair Value Measurements (Details) $ in Millions | 12 Months Ended
--- | ---
Aug. 31, 2022 USD ($) | Aug. 31, 2021 USD ($) investment | Aug. 31, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and cash equivalents | $ 223.2 | $ 491.3 |
Investments in debt and equity securities | 11.9 | 5.3 |
Asset impairments | 1.7 | $ 6.0 | $ 8.8
Number of investments impaired during the period | investment |  | 2 |
Estimate of Fair Value Measurement | Revolving credit facility borrowings | Credit Facility |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Short-term debt, fair value | 18.0 |  |
Estimate of Fair Value Measurement | Senior Unsecured Notes Payable |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Carrying and estimated fair value of financial instruments | 399.2 | $ 496.5 |
Fair value measured on recurring basis | Estimate of Fair Value Measurement |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Investments in debt and equity securities | 11.9 | 5.3 |
Fair value measured on recurring basis | Level 1 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and cash equivalents | $ 223.2 | $ 491.3 |

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