XML 79 R63.htm IDEA: XBRL DOCUMENT v3.10.0.1
Property, Plant and Equipment, Net - Schedule of Depreciation Expense (Detail) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Property Plant And Equipment [Abstract]      
Depreciation expense $ 17.1 $ 15.0 $ 14.1