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Discontinued Operation (Details) - Discontinued Operations - Healthy Directions LLC - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Aug. 31, 2019
Feb. 28, 2019
Feb. 28, 2018
Dec. 31, 2017
Discontinued Operations        
Purchase price from sale       $ 46.0
Supplemental payment       $ 25.0
Final adjusted supplemental payment $ 10.8   $ 10.8  
Reduction of supplemental payment 5.8      
Reduction of supplemental payment after tax $ 4.4      
Resolution of certain contingencies   $ 1.5    
Resolution of certain contingencies after tax   $ 1.3