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Accrued Liabilities - Summary of Accrued Liabilities (Detail) - USD ($)
$ in Millions
Dec. 31, 2018
Jun. 30, 2018
Payables And Accruals [Abstract]    
Employee compensation and benefits $ 51.1 $ 49.5
Accrued taxes payable 4.9 4.3
Other 17.7 14.5
Total accrued liabilities $ 73.7 $ 68.3 [1]
[1] Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606). See Note 1 to the financial statements contained in Part I, Item 1 of this report for additional information.