XML 76 R65.htm IDEA: XBRL DOCUMENT v3.3.1.900
Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information (Detail) - USD ($)
$ in Millions
6 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Supplemental Cash Flow Elements [Abstract]    
Cash paid during the period for income taxes $ 28.5 $ 12.8
Non-cash investing and financing activities:    
Fair value adjustment on marketable investment securities recorded to stockholders' equity $ (0.2) $ (0.1)