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Share Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Nov. 21, 2020
Nov. 21, 2019
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Remaining unrecognized pre-tax compensation cost     $ 70.6   $ 70.6  
SB/RH [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Remaining unrecognized pre-tax compensation cost     69.8   69.8  
Annual Management Incentive Compensation Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Total share based compensation expense     $ 5.6 $ 3.6 $ 8.4 $ 3.3
Restricted Stock Units [Member] | Long-Term Incentive Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period         3 years  
Restricted Stock Units [Member] | Long-Term Incentive Plan [Member] | Performance [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Time-based service conditions pecentage         70.00%  
Restricted Stock Units [Member] | Long-Term Incentive Plan [Member] | Service [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Time-based service conditions pecentage         30.00%  
Restricted Stock Units [Member] | Bridge Awards [Member] | Performance [Member] | Forecast [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Time-based service conditions pecentage 60.00% 60.00%        
Restricted Stock Units [Member] | Bridge Awards [Member] | Service [Member] | Forecast [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Time-based service conditions pecentage 40.00% 40.00%        
Stock Options [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares, vested and exercisable     0.2   0.2  
Weighted average exercise price of vested and exercisable     $ 73.29   $ 73.29  
Granted, exercised, forfeited, or vested shares     0.0