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

Property, Plant and Equipment - Additional Information (Detail)

v3.19.1
Property, Plant and Equipment - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Property, Plant and Equipment [Line Items]      
Depreciation expense $ 109.6 $ 88.9 $ 80.3
Impairment of Long-Lived Assets to be Disposed of 9.1 0.7 0.5
Cost of Sales [Member]      
Property, Plant and Equipment [Line Items]      
Impairment of Long-Lived Assets to be Disposed of $ 0.4 $ 0.7 $ 0.5