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Leases - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
May 31, 2024 | May 31, 2023 | May 31, 2024 | May 31, 2023 | Aug. 31, 2023
Lessor and Lessee, Lease, Description [Line Items] |  |  |  |  |
Accumulated depreciation | $ 83.6 |  | $ 83.6 |  | $ 68.0
Depreciation expense | 8.6 | $ 6.9 | $ 24.8 | $ 19.7 |
Operating lease option to extend |  |  | options to extend up to 7 years |  |
Leasing & Management Services |  |  |  |  |
Lessor and Lessee, Lease, Description [Line Items] |  |  |  |  |
Operating lease rental revenues | $ 30.4 | $ 23.1 | $ 88.5 | $ 66.5 |
Operating Lease, Lease Income, Statement of Income or Comprehensive Income [Extensible Enumeration] | Revenue from Contract with Customer, Excluding Assessed Tax | Revenue from Contract with Customer, Excluding Assessed Tax | Revenue from Contract with Customer, Excluding Assessed Tax | Revenue from Contract with Customer, Excluding Assessed Tax |
Car Hire Utilization Arrangements |  |  |  |  |
Lessor and Lessee, Lease, Description [Line Items] |  |  |  |  |
Operating lease rental revenues | $ 4.5 | $ 4.0 | $ 15.0 | $ 13.7 |
Minimum |  |  |  |  |
Lessor and Lessee, Lease, Description [Line Items] |  |  |  |  |
Sublease period |  |  | 1 year |  |
Opreating lease remaining lease term |  |  | 1 year |  |
Maximum |  |  |  |  |
Lessor and Lessee, Lease, Description [Line Items] |  |  |  |  |
Sublease period |  |  | 12 years |  |
Opreating lease remaining lease term |  |  | 74 years |  |

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(8)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(14)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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