XML 88 R76.htm IDEA: XBRL DOCUMENT v3.6.0.2
Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information (Detail) - USD ($)
$ in Millions
6 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Supplemental Cash Flow Elements [Abstract]    
Cash paid during the period for income taxes $ 8.0 $ 28.5
Non-cash investing and financing activities:    
Fair value adjustment on marketable investment securities recorded to other stockholder's equity $ (0.8) $ (0.1)