Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets - Narrative (Details)

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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Goodwill [Line Items]      
Indefinite lived intangible assets other than goodwill $ 120.9    
Amortization 3.1 $ 6.1 $ 0.9
Tradenames      
Goodwill [Line Items]      
Indefinite lived intangible assets other than goodwill 113.5    
Other      
Goodwill [Line Items]      
Indefinite lived intangible assets other than goodwill $ 7.4