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Goodwill and Other Intangible Assets - Discount Rates (Details) - Discount Rates | Oct. 31, 2020
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Valuation, Market Approach |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Reporting unit, measurement input | 0.150
Education | Valuation, Income Approach |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Reporting unit, measurement input | 0.100
Aviation | Valuation, Income Approach |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Reporting unit, measurement input | 0.105
Technical Solutions | Valuation, Income Approach |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Reporting unit, measurement input | 0.110

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