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Equity-Based Compensation (Schedule of Number of Awards and Weighted Average Grant Date Fair Value) (Details) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2023 | Sep. 30, 2021 | Sep. 30, 2020
Performance stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of awards (in shares) |  | 62,778 | 129,513
Weighted average grant date fair value (in USD per share) |  | $ 87.84 | $ 53.30
Restricted stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of awards (in shares) |  | 62,873 | 74,247
Weighted average grant date fair value (in USD per share) |  | $ 80.43 | $ 56.24
Deferred stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of awards (in shares) |  | 7,536 | 12,402
Weighted average grant date fair value (in USD per share) |  | $ 83.58 | $ 45.98
Common shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of awards (in shares) |  | 2,512 | 4,134
Weighted average grant date fair value (in USD per share) |  | $ 83.58 | $ 45.98
2018 Plan | Performance stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares to be issued on conversion as percentage of total award |  | 109.50% |
2018 Plan | Scenario, Forecast | Performance stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares to be issued on conversion (in shares) | 76,792 |  |
Minimum | Performance stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Grants based on targeted thresholds, percent |  | 0.00% |
Maximum | Performance stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Grants based on targeted thresholds, percent |  | 200.00% |
Return on Invested Capital | 2018 Plan | Performance stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance period |  | 1 year |
Gross Profit Threshold | Minimum | 2018 Plan | Performance stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance period |  | 2 years |
Gross Profit Threshold | Maximum | 2018 Plan | Performance stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance period |  | 3 years |
Total Shareholder Return | 2018 Plan | Performance stock units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Performance period |  | 3 years |

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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