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

Accounts and Other Receivables - Provision for Doubtful Trade Debts (Detail)

v3.20.1
Accounts and Other Receivables - Provision for Doubtful Trade Debts (Detail) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Allowance for Doubtful Accounts Receivable [Roll Forward]      
Balance at beginning of period $ 2.9 $ 1.3 $ 0.9
Adjustment to provision 1.7 2.8 0.6
Write-offs, net of recoveries (0.2) (1.2) (0.2)
Balance at end of period $ 4.4 $ 2.9 $ 1.3