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Other Financial Statement Details (Details) - USD ($) $ in Millions | Mar. 31, 2018 | Mar. 31, 2017
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Receivable amounts | $ 565.9 | $ 480.5
Less allowance for doubtful accounts | 2.2 | 2.1
Accounts receivable, net | 563.7 | 478.4
Trade Accounts Receivable |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Receivable amounts | 557.8 | 473.3
Other Receivables |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Receivable amounts | $ 8.1 | $ 7.2

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