Other Financial Statement Details - Accounts Receivable (Details) - USD ($) $ in Millions	Jun. 30, 2021	Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, gross	$ 1,005.7	$ 1,002.9
Less: allowance for expected credit losses	5.0	5.2
Total accounts receivable, net	1,000.7	997.7
Trade accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, gross	994.1	991.6
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable, gross	$ 11.6	$ 11.3