Other Financial Statement Details - Accounts Receivable (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, gross	$ 1,002.9	$ 938.9
Less: allowance for expected credit losses	5.2	4.9
Total accounts receivable, net	997.7	934.0
Trade accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, gross	991.6	924.1
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, gross	$ 11.3	$ 14.8