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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